Service parts for the 3056
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredFuel system
1 requiredOil system
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | diesel |
|---|---|
| Frequency | 60.0 Hz |
| Prime power | 99 kW |
| Oil capacity | 9.0 L |
| Dimensions (L×W×H) | 934×63×771 mm |
| Dry weight | 410 kg |
Engine
| Oil capacity | 9.0 L |
|---|---|
| Coolant capacity | 18.0 L |
| Displacement | 4.4 L |
| Aspiration | NA, T, TA |
| Rated speed | 2200 rpm |
Filters for the Caterpillar 3054C
5Engine-mounted filters the filter manufacturers list for this engine family. These come from the engine, not from this generator set’s own parts list, so confirm against your serial number before ordering.
| System | Filter | Description | Cross-references | |
|---|---|---|---|---|
| Oil filter | P554407 | Lube Filter, Spin-On Full Flow | CATERPILLAR 2409393, CATERPILLAR 7W2326, NAPA 1459, BALDWIN BT237 | KuduParts $25.00 FridayParts $26.84 |
| Oil filter | P551807 | Lube Filter, Spin-On Full Flow | CATERPILLAR 1R0058, CATERPILLAR 1R1807, NAPA 1791, NAPA 7791 | KuduParts $31.00 |
| Fuel filter | P502420 | Fuel Filter, Cartridge | CATERPILLAR 2526338, CATERPILLAR 4415111, NAPA 600488, CLAAS 0011377510 | buy |
Listed for this engine in only one kind of machine, so they may depend on how the engine was installed:
| System | Filter | Description | Cross-references | |
|---|---|---|---|---|
| Fuel / water separator | P551423 | Fuel Filter, Water Separator Spin-On | CATERPILLAR 1561200, NAPA 3531, NAPA 600091, NAPA 600092 | KuduParts $18.00 FridayParts $20.00 |
| Fuel / water separator | P551424 | Fuel Filter, Water Separator Spin-On | CATERPILLAR 1383096, CATERPILLAR 1383098, NAPA 3532, NAPA 600094 | KuduParts $16.00 FridayParts $18.50 |
Maintenance & consumables
for the Caterpillar 3054C| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Air Primary | 110-6326 | Amazon eBay $40.00 NAPA $62.25 KuduParts $30.00 FridayParts $131.99 | ||
| Fuel filter | — | 1000 hr | |||
| Fuel filter | Filter water separator | 138-3100 | eBay $14.99 KuduParts $34.00 | ||
| Oil filter | Filter oil | 7W2327 | Amazon eBay $22.00 eBay $22.00 NAPA $20.60 NAPA $20.60 FridayParts $149.99 | ||
| Battery | — | ||||
| Belt | Correct tension 535 N (120 lb) | — | 25 hr | ||
| Coolant | Max 6% SCA with coolant; max 8% SCA with water | — | 6000 hr | ||
| Oil | — | 500 hr | |||
| Spark plug | Replace spark plugs every 1,000 hours or as needed. | — | 1000 hr |
Service intervals
39| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Alternator Belt | Inspect | 250 hr | 12 mo | First service — First 270L fuel (3054B) / 270L fuel (3054) / 700L fuel (3056 TC) / 470L fuel (3056 NA) or 25-50 service hours |
| Engine Valve Lash | Inspect | 1000 hr | First service — First 270L fuel or 25-50 service hours | |
| Engine oil (S-O-S oil sample) | Test | 125 hr | Severe service occurs at high loads, in high temperatures, and in dusty conditions | |
| Coolant (S-O-S coolant analysis Level 1) | Test | 250 hr | Cat ELC - Every 250 Hours; also the recommended sampling interval for all conventional heavy-duty coolant/antifreeze and for commercial coolants that meet Cat EC-1 | |
| Engine Oil and Filter | Change | 250 hr | 12 mo | Every 1875L (3054B) / 2350L (3054) / 5700L (3056 TC) / 4700L (3056 NA) fuel or 250-400 hours or 1 year |
| Engine crankcase oil (S-O-S oil sample) | Test | 250 hr | Table 6 S-O-S Oil Sampling Interval; severe applications may require a more frequent oil sampling interval | |
| SCA (Supplemental Coolant Additive) concentration | Test | 250 hr | Test the concentration of SCA or submit a coolant sample at 250 hour intervals or at PM Level 1 intervals; check at every oil change or every 250 hours, whichever occurs first | |
| Auxiliary Water Pump | Inspect | 500 hr | 12 mo | Every 3750L (3054B) / 4700L (3054) / 5700L (3056 TC) / 4700L (3056 NA) fuel or 500 hours or 1 year |
| Battery Electrolyte Level | Check | 500 hr | 12 mo | Every 3750L fuel or 500 hours or 1 year |
| Coolant (S-O-S coolant analysis Level 2) | Test | 500 hr | 12 mo | First service — For new systems, refilled systems, and converted systems that use Cat ELC or Cat DEAC; also every year; use the interval that occurs first |
| Cooling System Supplemental Coolant Additive (SCA) | Test | 500 hr | 12 mo | Test/Add every 3750L (3054B) / 4700L (3054) / 5700L (3056 TC) / 4700L (3056 NA) fuel or 500 hours or 1 year |
| Crankshaft Vibration Damper | Inspect | 500 hr | 12 mo | Every 3750L fuel or 500 hours or 1 year |
| Engine Air Cleaner Element | Clean | 500 hr | 12 mo | Clean/Replace every 3750L (3054B/3056 TC) / 4700L (3054/3056 NA) fuel or 500 hours or 1 year |
| Engine Crankcase Breather | Clean | 500 hr | 12 mo | Clean/Replace every 3750L (3054B) / 4700L (3054) or 500 hours or 1 year (varies 3056) |
| Engine Mounts | Inspect | 500 hr | 12 mo | Every 3750L (3054B) / 4700L (3054) fuel or 500 hours or 1 year |
| Engine Oil Sample | Other | 500 hr | 12 mo | Obtain sample every 3750L (3054B) / 4700L (3054) fuel or 500 hours or 1 year |
| Fuel System Secondary Filter | Replace | 500 hr | 12 mo | Replace every 3750L (3054B) / 4700L (3054) fuel or 500 hours or 1 year |
| Fuel Tank Water and Sediment | Drain | 500 hr | 12 mo | Drain every 3750L (3054B) / 4700L (3054) fuel or 500 hours or 1 year |
| Fuel Transfer Pump Strainer | Clean | 500 hr | 12 mo | Clean every 3750L (3054B) / 4700L (3054) fuel or 500 hours or 1 year |
| Heat Exchanger | Inspect | 500 hr | 12 mo | Every 3750L (3054B) / 4700L (3054) fuel or 500 hours or 1 year |
| Hoses and Clamps | Inspect | 500 hr | 12 mo | Inspect/Replace every 3750L (3054B) / 4700L (3054) fuel or 500 hours or 1 year |
| oil | Change | 500 hr | 3000 Series service intervals increased to 500 hours as standard (3013C, 3024C, 3054, 3056) | |
| Marine Transmission Oil Cooler | Clean | 1000 hr | Clean/Inspect every 7500L (3054B) / 9400L (3054) / 14400L (3056 TC) / 11400L (3056 NA) fuel or 1000 hours | |
| Alternator | Inspect | 2000 hr | 24 mo | Every 15000L (3054B) / 18800L (3054) / 28500L (3056 TC) / 22800L (3056 NA) fuel or 2000 hours or 2 years |
| Cooling System Coolant (DEAC) | Change | 2000 hr | 24 mo | Every 15000L (3054B) / 18800L (3054) / 28500L (3056 TC) / 22800L (3056 NA) fuel or 2000 hours or 2 years |
| Cooling System Water Temperature Regulator | Replace | 2000 hr | 24 mo | Every 15000L fuel or 2000 hours or 2 years |
| Fuel Injection Nozzles | Test | 2000 hr | 24 mo | Test/Exchange every 15000L (3054B) / 18800L (3054) / 28500L (3056 TC) / 22800L (3056 NA) fuel or 2000 hours or 2 years |
| Starting Motor | Inspect | 2000 hr | 24 mo | Every 15000L (3054B) / 18800L (3054) / 28500L (3056 TC) / 22800L (3056 NA) fuel or 2000 hours or 2 years |
| Turbocharger | Inspect | 2000 hr | 24 mo | Every 18800L (3054 TC) / 28500L (3056 TC) fuel or 2000 hours or 2 years |
| Water Pump | Inspect | 2000 hr | 24 mo | Every 15000L (3054B) / 18800L (3054) / 28500L (3056 TC) / 22800L (3056 NA) fuel or 2000 hours or 2 years |
| Cooling System Coolant Extender (ELC) | Other | 3000 hr | Add every 22800L (3054B) / 28500L (3054) / 43200L (3056 TC) / 34000L (3056 NA) fuel or 3000 hours | |
| Cat ELC Extender addition (cooling system) | Other | 6000 hr | Treat the cooling system with Cat ELC Extender at 6000 hours or one half of the coolant service life | |
| Cooling System Coolant (ELC) | Change | 6000 hr | Change every 45600L (3054B) / 57000L (3054) / 87000L (3056 TC) / 68000L (3056 NA) fuel or 6000 hours | |
| Overhaul Considerations | Other | 9000 hr | Refer to manual for overhaul considerations at 66400L (3054B) / 84000L (3054) fuel or 9000 hours | |
| Coolant (Cat ELC) | Change | 12000 hr | 12000 service hours or six years; use the interval that occurs first | |
| minor overhaul | Other | 20000 hr | 3600 engines designed to run 20 000 hours between minor overhauls using No. 2 fuel | |
| major overhaul | Other | 40000 hr | 3600 engines designed to run 40 000 hours between major overhauls using No. 2 fuel | |
| cylinder liners and pistons | Other | 80000 hr | 3600 cylinder liners and pistons designed for 80 000 hours using No. 2 fuel | |
| Coolant (S-O-S coolant analysis Level 1 and Level 2) | Test | 12 mo | Cat DEAC - Yearly |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Service specifications
3| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Pressure | Maximum air pressure for cleaning purposes | 205 | kPa | |
| Pressure | Maximum water pressure for cleaning purposes | 275 | kPa | |
| Pressure | Unit injector fuel injection pressure | 1240 | bar (18 000 psi) |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Recommended fluids
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Coolant | Cat DEAC | Diesel; 3,000 Service Hours or Three Years; annual S·O·SSM Level 2 coolant sampling and analysis | |||
| Coolant | Cat DEAC (Diesel Engine Antifreeze/Coolant) | Acceptable coolant; commercial heavy-duty antifreeze/coolant must meet ASTM D4985 or ASTM D6210 | Conventional heavy-duty coolant/antifreeze. Caterpillar recommends a 1:1 mixture of water and glycol. Do not use a commercial coolant/antifreeze that only meets the ASTM D3306 specification. Do not use Cat SCA at the initial fill when Cat DEAC is used. | ||
| Coolant | Cat ELC | Diesel; 12,000 Service Hours or Six Years; add Cat ELC Extender at 6,000 service hours or one half of service life; annual S·O·SSM Level 2 coolant sampling and analysis | |||
| Coolant | Cat ELC (Extended Life Coolant) | Caterpillar EC-1 specification (preferred); also meets ASTM D4985, ASTM D6210, and ASTM D3306 | Service life of 12000 service hours or six years. Premixed ELC provides freeze protection to -37 C (-34 F); ELC Concentrate can be used to lower the freezing point to -52 C (-62 F). An Extender is the only additional maintenance needed at 6000 service hours or one half of the ELC service life. Cat ELC cooling systems can withstand contamination to a maximum of ten percent of conventional heavy-duty coolant/antifreeze and/or SCA. | ||
| Coolant | Cat NGEC | Natural Gas; 16,000 Service Hours or Three Years; use interval that occurs first | |||
| Coolant | Cat SCA (Supplemental Coolant Additive) with water | SCA concentration in a cooling system that uses SCA and water should be six to eight percent by volume; do not exceed the eight percent maximum concentration. If Cat SCA is not used, the commercial SCA must provide a minimum of 2400 mg/L or 2400 ppm (140 grains/US gal) of nitrites in the final coolant mixture when used with water, and a minimum of 1400 mg/L or 1400 ppm (82 grains/US gal) with heavy-duty coolant/antifreeze. | |||
| Coolant | Caterpillar Conventional Coolant with SCA (Supplemental Coolant Additive) | Requires periodic SCA testing and addition per maintenance schedule | |||
| Coolant | Caterpillar Extended Life Coolant (ELC) | Does not require frequent SCA additions; extender added only once at specified intervals | |||
| Coolant | Glycol (ethylene glycol / propylene glycol) | Propylene glycol coolant must meet ASTM D6210-04 | Ethylene glycol: 50 percent = freeze protection -37 C (-34 F), boil protection 106 C (223 F); 60 percent = -52 C (-62 F), 111 C (232 F). Propylene glycol: 50 percent = -32 C (-26 F), 106 C (223 F). Do not use propylene glycol in concentrations that exceed 50 percent; do not use ethylene glycol in concentrations that exceed 60 percent. All Caterpillar diesel engines equipped with air-to-air aftercooling (ATAAC) require a minimum of 30 percent glycol. | ||
| Engine oil | Cat DEO (Diesel Engine Oil) 10W-30 and 15W-40 | Cat ECF-1 (exceeds); API CI-4, API CI-4 PLUS, API CH-4, API CG-4, API CF (Cat DEO SAE 15W-40) | Caterpillar oils are used to fill diesel engines at the factory. Non-Caterpillar commercial oils are second choice oils. Do not use API CF-4 oils in Caterpillar diesel engines. Do not use single grade API CF oils or multigrade API CF oils in 3500 Series, C175 Series and smaller DI diesel engines. | ||
| Engine oil | Cat NGEO | Natural Gas | |||
| Engine oil | Commercial oils (DI engines) | Cat ECF-1 required; API CG-4 multigrade acceptable; API CH-4, API CI-4 and API CI-4 PLUS acceptable only if the requirements of Cat ECF-1 are met; do not use API CF-4 oils | Minimum TBN must be 10 times the fuel sulfur level (ASTM D2896); minimum TBN of the oil is 5 regardless of a low fuel sulfur level. API CG-4 oils: do not exceed the standard oil drain interval. | ||
| Engine oil | Commercial oils (PC engines) | Cat ECF-1; API CH-4, API CI-4, API CI-4 PLUS (if Cat ECF-1 requirements met); API CG-4 multigrade; API CF-4 multigrade; API CF | Minimum TBN of the oil that is used in PC engines must be 20 times the fuel sulfur level; minimum TBN of new oil is five. Change the oil when the TBN deteriorates to 50 percent of the original TBN. | ||
| Engine oil | Re-refined base stock oils | Acceptable if they meet the performance requirements specified by Caterpillar; filtering is inadequate for producing high quality re-refined base stock oils. | |||
| Engine oil | Synthetic base stock oils | Acceptable if they meet the performance requirements specified for the engine compartment. Caterpillar does not recommend the automatic extension of oil drain intervals for any type of oil. | |||
| Engine oil | Cat Arctic DEO SYN SAE 0W-30 | -40°C to 30°C | Engine Crankcase; Industrial Engines | ||
| Engine oil | SAE 0W-20 | -40°C to 10°C | Table 1 Lubricant Viscosities for Ambient Temperatures (DI diesel engines) | ||
| Engine oil | SAE 0W-30 | -40°C to 30°C | Table 1 Lubricant Viscosities for Ambient Temperatures (DI diesel engines) | ||
| Engine oil | SAE 0W-40 | -40°C to 40°C | Table 1 Lubricant Viscosities for Ambient Temperatures (DI diesel engines) | ||
| Engine oil | Cat DEO SYN SAE 5W-40 | -30°C to 50°C | Engine Crankcase; Industrial Engines | ||
| Engine oil | SAE 5W-30 | -30°C to 30°C | Table 1 Lubricant Viscosities for Ambient Temperatures (DI diesel engines) | ||
| Engine oil | SAE 5W-40 | -30°C to 50°C | Table 1 Lubricant Viscosities for Ambient Temperatures (DI diesel engines) | ||
| Engine oil | Cat DEO SAE 10W-30 | -18°C to 40°C | Engine Crankcase; Industrial Engines | ||
| Engine oil | SAE 10W-30 | -18°C to 40°C | Table 1 Lubricant Viscosities for Ambient Temperatures (DI diesel engines); SAE 10W-30 is the preferred viscosity grade for the 3116, 3126, C7, C-9 and C9 diesel engines between -18 C (0 F) and 40 C (104 F) | ||
| Engine oil | SAE 10W-40 | -18°C to 50°C | Table 1 Lubricant Viscosities for Ambient Temperatures (DI diesel engines) | ||
| Engine oil | Cat DEO SAE 15W-40 | -9°C to 50°C | Engine Crankcase; Industrial Engines | ||
| Engine oil | SAE 15W-40 | -9°C to 50°C | Table 1 Lubricant Viscosities for Ambient Temperatures (DI diesel engines) | ||
| Engine oil | Cat SAEO SAE 30 | API CF-4 category | 0°C to 40°C | Table 2 - 3116 and 3126 Marine Engines with mechanical unit injection; factory fill has API CF-4 category and viscosity grade of SAE 30 | |
| Engine oil | SAE 30 | 0°C to 40°C | Table 3 Lubricant Viscosities for Ambient Temperatures - PC engines only | ||
| Engine oil | Cat SAEO SAE 40 | API CF-4 category | 5°C to 50°C | Table 2 - 3116 and 3126 Marine Engines with mechanical unit injection. Caterpillar does not recommend the use of multigrade oils in the 3116 and 3126 Marine Diesel Engines that use mechanical unit injection. |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Procedures
8Determining the cause of a plugged fuel filter (ice or wax) diagnostic
- Remove the fuel filters.
- Cut the fuel filters open.
- Inspect the fuel filter before the filter warms. The inspection will show that the filter is filled with particles of either ice or wax.
Aftercooler Core - Clean/Test maintenance
⚠ High caustic cleaner concentration can damage core
⚠ Wear protective face shield and clothing when using pressure air
Tools: Hydrosolv liquid cleaner (1U-5490 or 174-6854 - 19L/5 US gallon), Steam cleaner, Compressed air system, Protective face shield, Protective clothing
- Remove the core per Service Manual
- Turn core upside-down to remove debris
- Back flush core with Hydrosolv liquid cleaner (2-5% concentration, max 93C/200F)
- Steam clean core to remove residue and flush fins
- Remove any trapped debris
- Wash core with hot soapy water and rinse thoroughly with clean water
- Dry core with compressed air, directing air in reverse flow direction
- Maximum air pressure at nozzle must be less than 205 kPa (30 psi)
- Inspect core to ensure cleanliness
- Pressure test the core (shops servicing radiators can perform this)
- Repair core if necessary
- Install core per Service Manual
Alternator Belt - Inspect/Adjust/Replace maintenance
⚠ Inspect belt for wear and cracking before adjustment
⚠ Replace belts in matched sets only; new single belt will carry excessive load if paired with stretched older belts
⚠ Belt slippage decreases belt life
Tools: Belt tension gauge
- Remove belt guard for access
- Loosen mounting bolts and adjusting bolt
- Slide alternator in direction needed to achieve correct belt tension
- Tighten adjusting bolt to secure position
- Tighten mounting bolts per torque specifications in manual
- Reinstall belt guard
- After new belt installation, check adjustment again after 30 minutes at rated RPM
Battery - Replace maintenance
⚠ Batteries generate combustible gases which can explode
⚠ Ensure proper ventilation in enclosed spaces
⚠ Follow procedures to prevent electrical arcs and sparks
- Turn start key switch to OFF position
- Remove key and disconnect all electrical loads
- Turn OFF battery charger and disconnect
- Disconnect NEGATIVE (-) cable from NEGATIVE battery terminal
- Disconnect POSITIVE (+) cable from POSITIVE battery terminal
- Remove used battery
- Install new battery
- Connect POSITIVE (+) cable from starting motor to POSITIVE battery terminal
- Connect NEGATIVE (-) cable from NEGATIVE terminal on starter motor to NEGATIVE battery terminal
- Always recycle used battery at appropriate facility
Battery Electrolyte Level - Check maintenance
⚠ Sulfuric acid in lead-acid batteries can burn skin and clothing
⚠ Wear face shield and protective clothing when working with batteries
⚠ Ensure full charge to help prevent battery freezing
Tools: 1U-7298 or 1U-7297 Coolant/Battery Tester, Fine sandpaper, Cleaning solutions
- Remove filler caps
- Maintain electrolyte level to FULL mark on battery
- If water addition necessary, use distilled water (or clean water low in minerals if distilled unavailable)
- Do not use artificially softened water
- Check electrolyte condition with 1U-7298 or 1U-7297 Coolant/Battery Tester
- Keep batteries clean
- Clean battery case with 0.1L baking soda + 1L clean water, OR 0.1L ammonia + 1L clean water
- Thoroughly rinse battery case with clean water
- Use fine grade sandpaper to clean terminals and cable clamps until bright/shiny
- Do not excessively remove material as this prevents proper clamp fit
- Coat clamps and terminals with 5N-5561 Silicone Lubricant, petroleum jelly, or MPGM grease
Changing to Cat ELC maintenance
⚠ Do not leave an empty SCA maintenance element on a system that is filled with ELC. The element housing may corrode and leak causing an engine failure.
⚠ Improper or incomplete rinsing of the cooling system can result in damage to copper and other metal components.
⚠ The cooling system cleaner must be thoroughly flushed from the cooling system. Cooling system cleaner that is left in the system will contaminate the coolant. The cleaner may also corrode the cooling system.
Tools: Caterpillar cleaner for cooling systems, 5P-3413 Pipe Sealant, Suitable containers to collect fluids
- Drain the coolant into a suitable container.
- Dispose of the coolant according to local regulations.
- If equipped, remove the empty SCA maintenance element and the element base. Plug the coolant lines or bypass the coolant lines.
- Flush the system with clean water in order to remove any debris.
- Use Caterpillar cleaner for cooling systems in order to clean the system. Follow the instructions on the label.
- Drain the cleaner into a suitable container. Flush the cooling system with clean water.
- In systems with heavy deposits, disconnect the hoses. Clean deposits and debris from the hoses and fittings. Install the hoses and tighten the hose fittings.
- Fill the cooling system with clean water and operate the engine until the engine is warmed to 49 C to 66 C (120 F to 151 F).
- Drain the cooling system into a suitable container and flush the cooling system with clean water.
- Repeat Steps 8 and 9 until the system is completely clean.
- Fill the cooling system with the Cat ELC.
- Operate the engine until the engine is warmed. While the engine is running, inspect the engine for leaks. Tighten hose clamps and connections in order to stop any leaks.
- Attach the Special Publication, PEEP5027, "Label" to the cooling system filler for the engine in order to indicate the use of Cat ELC.
Cooling System Coolant (DEAC) - Change maintenance
⚠ Hot coolant causes serious burns; allow engine to cool before opening filler cap
⚠ Commercially available cleaners may damage cooling system components
⚠ Use only Caterpillar-approved cleaning products
Tools: Hydrosolve liquid cleaners (1U-5490 or 174-6854), Steam cleaner, 9S-8140 Pressurizing Pump
- Stop engine and allow cooling
- Loosen cooling system filler cap slowly to relieve pressure
- Remove cooling system filler cap
- Open cooling system drain valve (if equipped) or remove drain plugs
- Remove drain plug from cylinder block
- For 3054/3054B: Remove drain plug from pipe for jacket water pump
- For 3056: Remove drain plug from heat exchanger and water cooled exhaust manifold
- Allow coolant to drain completely
- Flush cooling system with clean water to remove debris
- Close drain valve and clean/install drain plugs per torque specs
- Fill with Caterpillar Fast Acting Cooling System Cleaner mixture (0.5L cleaner per 15L system capacity for normal cleaning, or 0.5L per 3.8-7.6L capacity for heavy deposits)
- Install cooling system filler cap
- Start and run engine at low idle for minimum 30 minutes (90 minutes for heavily deposited systems) with coolant temp at least 82C
- Stop engine, allow cooling, loosen filler cap slowly to relieve pressure
- Drain and flush again with clean water until all cleaner signs are gone
Calculating the amount of lighter fuel required to modify the cloud point or the pour point operation
- Obtain the specification for the cloud point or the pour point of both fuels from your fuel supplier.
- Locate the cloud point or the pour point of the heavier fuel on the left side of the table. Mark the point on the table.
- Locate the cloud point or the pour point of the lighter fuel on the right side of the table. Mark the point on the table.
- Draw a line between the two points that were established. Label this line "A".
- Find the lowest outside temperature for machine operation on the left side of the table. Draw a horizontal line from this point until it intersects line "A". Label this new line "C".
- Mark the intersection of line "C" and line "A". Draw a vertical line to the bottom of the table. Label this line "B". The point at the bottom of line "B" reveals the percentage of lighter fuel that is
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Common questions
What engine does the Caterpillar 3056 use?
The Caterpillar 3056 is powered by the Caterpillar 3054C engine.
What kind of fuel does the Caterpillar 3056 run on?
The Caterpillar 3056 runs on diesel.
How much oil does the Caterpillar 3056 take?
The Caterpillar 3054C engine in the Caterpillar 3056 has an oil capacity of 9.0 liters.
What is the coolant capacity of the Caterpillar 3056?
The Caterpillar 3056 cooling system holds 18 liters (4.8 US gallons) for the engine, per the manufacturer specification sheet.
What is the dry weight of the Caterpillar 3056?
The Caterpillar 3056 has a dry weight of 410 kg (903 lb).
What oil filter does the Caterpillar 3056 use?
The Caterpillar 3056 uses oil filter part number 7W2327.
What fuel filter does the Caterpillar 3056 use?
The Caterpillar 3056 uses fuel filter part number 138-3100.
What air filter does the Caterpillar 3056 use?
The Caterpillar 3056 uses air filter part number 110-6326.
Repair guides
4- Aftercooler Core - Clean/Test
- Battery - Replace
- Battery Electrolyte Level - Check
- Cooling System Coolant (DEAC) - Change
Step-by-step procedures compiled from the Caterpillar service manual for this model.
Parts
155| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 035-8059 | Glow plug | Glow plug | eBay $23.22 FridayParts $13.25 | |
| 102-9720 | Cleaning Kit (detergent and oil for AIRSEP air cleaner elements) | Air filter | eBay | |
| 110-6326 | Air Primary | 1 | Air filter | Amazon eBay $40.00 NAPA $62.25 KuduParts $30.00 FridayParts $131.99 |
| 123-2367 | Air Primary | 1 | Air filter | Amazon eBay $89.77 NAPA $62.83 KuduParts $30.00 FridayParts $32.00 |
| 133-5673 | Fuel/Water Separator | 1 | Fuel filter | Amazon eBay $19.99 eBay $19.99 NAPA $70.35 KuduParts $19.00 FridayParts $20.99 |
| 138-3100 | Filter water separator | Fuel filter | eBay $14.99 KuduParts $34.00 | |
| 138-6744 | Water pump repair kit | 1 | Pump | eBay $179.99 |
| 142-5867 | Front seal | Seal | eBay $41.66 FridayParts $39.38 | |
| 142-5868 | Rear seal | Seal | eBay $45.71 FridayParts $26.95 | |
| 161-4113 | Oil pump | Pump | eBay $1200.00 NAPA $726.04 FridayParts $510.00 | |
| 1R-0716 | Engine Oil | 1 | Oil filter | Amazon eBay $44.90 eBay $44.90 NAPA $33.79 NAPA $33.79 KuduParts $80.00 FridayParts $81.99 |
| 1R-0749 | Fuel Secondary - ADV | 1 | Fuel filter | Amazon Amazon eBay $135.88 eBay $135.88 NAPA $28.51 NAPA $28.51 KuduParts $17.00 FridayParts $47.50 |
| 1R-1808 | Engine Oil - ADV | 1 | Oil filter | Amazon eBay $141.00 eBay $59.99 NAPA $45.70 NAPA $45.70 KuduParts $80.00 FridayParts $81.99 |
| 1R0716 | Filter oil | Oil filter | Amazon eBay $44.90 eBay $44.90 NAPA $33.79 NAPA $33.79 KuduParts $80.00 FridayParts $81.99 | |
| 1R0749 | Filter fuel | 1 case (12 x 1 quart) | Fuel filter | Amazon Amazon eBay $135.88 eBay $135.88 NAPA $28.51 NAPA $28.51 KuduParts $17.00 FridayParts $47.50 |
| 1U-5490 | Hydrosolv 4165 liquid cleaner, 19 L (5 US gallon) | Fluid | Amazon eBay | |
| 1U-5492 | Hydrosolv 100 Liquid Cleaner, 19 L (5 US gal) | Fluid | eBay | |
| 1U-5718 | Vacuum Pump | 1 | Pump | Amazon eBay $87.99 |
| 1W1700 | Lift/transfer pump | Pump | eBay $168.00 FridayParts $65.00 SinoCMP $129.00 | |
| 225-3150 | Starter motor | 1 | Starter | eBay $699.99 SinoCMP $289.00 |
| 339-7767 | Alternator | Alternator | eBay $147.25 FridayParts $157.50 | |
| 384-8611 | Lift/transfer pump | Pump | eBay $358.00 SinoCMP $219.00 KuduParts $312.00 FridayParts $322.09 | |
| 3T8705 | Glow plug | Glow plug | eBay $13.99 FridayParts $19.56 | |
| 3T8706 | Glow plug | Glow plug | eBay $33.96 FridayParts $47.99 | |
| 4N1151 | Gasket oil pan | Gasket | eBay $15.24 | |
| 4P-7610 | Magnetic Pickup Group (engine speed/timing sensor in flywheel housing) | Sensor | Amazon eBay eBay | |
| 4W8063 | Thermostat | Thermostat | eBay $12.55 FridayParts $18.99 | |
| 5N-5561 | Silicone Lubricant | Fluid | Amazon eBay | |
| 6N6798 | V-belt | Belt | eBay $41.15 NAPA $40.08 | |
| 6T1395 | Alternator | Alternator | eBay $444.93 NAPA $392.01 FridayParts $223.95 | |
| 7W-2326 | Engine Oil | 1 | Oil filter | Amazon eBay $24.82 eBay $14.00 KuduParts $25.00 FridayParts $26.85 |
| 7W-2327 | Engine Oil | 2 | Oil filter | Amazon eBay $22.00 eBay $22.00 NAPA $20.60 NAPA $20.60 FridayParts $149.99 |
| 7W2327 | Filter oil | Oil filter | Amazon eBay $22.00 eBay $22.00 NAPA $20.60 NAPA $20.60 FridayParts $149.99 | |
| 8S-2245 | Injection Cleaning Tool Group | Injector | eBay | |
| 9G8010 | Switch | Sensor | eBay $39.00 FridayParts $16.90 | |
| 9L6639 | V-belt | Belt | eBay $19.99 NAPA $37.22 | |
| AH137883 | ALTERNATOR (12V, 95A) | 1 | Alternator | Amazon eBay $123.39 FridayParts $123.71 |
| AH165975 | ALTERNATOR | 1 | Alternator | Amazon eBay $165.19 FridayParts $167.96 |
| AT387574 | ALTERNATOR | 1 | Alternator | Amazon eBay $283.31 FridayParts $199.39 |
| AXE17691 | (12V, 200A) (3151) | 1 | Alternator | Amazon eBay $499.95 FridayParts $266.71 |
| AXE28087 | ALTERNATOR | 1 | Alternator | Amazon eBay |
| DZ112758 | (LGTH=1565 mm) (24GY) | 1 | Belt | Amazon eBay |
| DZ113132 | (LGTH=1545 mm) (24GZ) | 1 | Belt | Amazon eBay |
| DZ114957 | ALTERNATOR (BOSCH, 24 V, 45 A) | 1 | Alternator | Amazon eBay FridayParts $164.00 |
| DZ115812 | FAN BELT (LGTH = 1680 mm) | 1 | Belt | Amazon eBay $54.89 |
| DZ117266 | (LGTH=1705 mm) (24GH) | 1 | Belt | Amazon eBay |
| DZ117267 | FAN BELT (LGTH = 1690 mm) | 1 | Belt | Amazon eBay $43.31 |
| DZ117268 | FAN BELT (LGTH = 1530 mm) | 1 | Belt | Amazon eBay FridayParts $56.36 |
| DZ117503 | ALTERNATOR | 1 | Alternator | Amazon eBay |
| DZ118768 | (LGTH=1535 mm) (24GR) | 1 | Belt | Amazon eBay |
| DZ118781 | FAN BELT (LGTH = 1700 mm) | 2 | Belt | Amazon eBay $44.89 |
| DZ118783 | (LGTH=1685 mm) (24EN) (24FX) | 1 | Belt | Amazon eBay |
| DZ118786 | FAN BELT | 1 | Belt | Amazon eBay |
| DZ118815 | FAN BELT (LGTH = 1725 mm) | 1 | Belt | Amazon eBay $55.43 |
| DZ118817 | (LGTH=1735 mm) (24GM) | 1 | Belt | Amazon eBay |
| DZ118827 | (LGTH=1760 mm) (24GN) | 1 | Belt | Amazon eBay $40.00 |
| DZ119002 | (LGTH=2250 mm) (24GV) | 1 | Belt | Amazon eBay |
| DZ119013 | FAN BELT (LGTH = 2330 mm) | 1 | Belt | Amazon eBay $57.93 |
| DZ119014 | (LGTH=2335 mm) (24HL) | 1 | Belt | Amazon eBay |
| DZ119016 | (LGTH=2345 mm) (24FT) | 1 | Belt | Amazon eBay |
| DZ119017 | (LGTH=2385 mm) (24LR) | 1 | Belt | Amazon eBay |
| DZ119061 | FAN BELT (LGTH = 1540 mm) | 2 | Belt | Amazon eBay $54.19 |
| DZ119063 | FAN BELT | 1 | Belt | Amazon eBay $35.23 |
| DZ119385 | FAN BELT (LGTH = 1650 mm) | 1 | Belt | Amazon eBay $59.95 |
| DZ119477 | FAN BELT (LGTH = 1565 mm) | 1 | Belt | Amazon eBay $55.00 |
| DZ119530 | FAN BELT (LGTH = 1675 mm) | 2 | Belt | Amazon eBay $66.99 |
| DZ119549 | FAN BELT (LGTH = 2455 mm) | 1 | Belt | Amazon eBay |
| DZ119639 | FAN BELT (LGTH = 2415 mm) | 1 | Belt | Amazon eBay |
| DZ119643 | (LGTH=2315 mm) (24GT) | 1 | Belt | Amazon eBay FridayParts $48.94 |
| DZ119970 | (LGTH=1550 mm) (24HA) | 1 | Belt | Amazon eBay $56.50 |
| DZ125172 | ALTERNATOR | 3 | Alternator | Amazon eBay |
| ECC328 | Speed Controller | Speed controller | Amazon eBay | |
| PF-300C | Pneumatic Tire | 1 | Pump | Amazon eBay $195.60 FridayParts $40.95 |
| PS-300C | Pneumatic Tire | 1 | Pump | Amazon eBay $195.60 FridayParts $99.00 |
| RE506105 | STARTER (12 V) | 1 | Starter | Amazon eBay $146.29 FridayParts $317.99 |
| RE522878 | Fuel filter | 1 | Fuel filter | Amazon eBay $192.10 PartsGeek $14.97 NAPA $44.17 KuduParts $16.00 FridayParts $18.50 |
| RE524723 | FUEL FILTER (35ED) | 3 | Fuel filter | Amazon eBay $192.10 KuduParts $16.00 FridayParts $18.50 |
| RE526834 | Filter Kit | 2 | Fuel filter | Amazon eBay $19.99 FridayParts $29.63 |
| RE528929 | STARTER | 3054 | Starter | Amazon eBay $272.95 FridayParts $241.13 |
| RE532716 | SHORT BLOCK ASSEMBLY (Also Order Engine Overhaul Gasket Kit and Cylinder Head Bolt Kit) | 1 | Gasket | Amazon eBay |
| RE533516 | ALTERNATOR | 1 | Alternator | Amazon eBay $110.00 NAPA $301.10 FridayParts $100.49 |
| RE533653 | ALTERNATOR | 1 | Alternator | Amazon eBay $358.38 FridayParts $100.50 |
| RE533654 | ALTERNATOR | 1 | Alternator | Amazon eBay $640.99 FridayParts $167.96 |
| RE537146 | ALTERNATOR (28V, 50A) (3142) | 1 | Alternator | Amazon eBay $89.90 |
| RE541922 | PRIMARY FUEL FILTER | 1 | Fuel filter | Amazon eBay $19.41 NAPA $59.21 KuduParts $26.00 FridayParts $28.00 |
| SE501341 | (REMAN FOR AT161324, DZ114957) (3142) | 1 | Alternator | Amazon eBay $300.00 NAPA $311.37 FridayParts $163.09 |
| SE501342 | ALTERNATOR (REMAN FOR AH137883) (12V, 95A) | 1 | Alternator | Amazon eBay $90.95 FridayParts $123.71 |
| SE501343 | ALTERNATOR (REMAN FOR AH165975) (12V, 120A) (3103) | 1 | Alternator | Amazon eBay $157.09 NAPA $310.81 SinoCMP $249.00 |
| SE501401 | STARTER (REMAN FOR RE540301) (12 V, 2.5 KW) | 1 | Starter | Amazon eBay $319.99 FridayParts $156.60 |
| SE501402 | STARTER (REMAN FOR RE540300) (12V, 7KW) (3007) | 2 | Starter | Amazon eBay $132.95 NAPA $216.81 |
| SE501403 | STARTER | 1 | Starter | Amazon eBay $199.99 NAPA $235.85 |
| SE501405 | (REMAN FOR RE70474 OR RE70960) (3010) | 1 | Starter | Amazon eBay $280.99 |
| SE501406 | STARTER (REMAN FOR RE501150) (24V) (3041) | 1 | Starter | Amazon eBay $154.95 NAPA $207.32 FridayParts $179.99 |
| SE501407 | STARTER (REMAN FOR RE70961) | 1 | Starter | Amazon eBay $188.95 NAPA $266.37 FridayParts $260.84 |
| SE501426 | STARTER (REMAN FOR RE540302) (12 V, 2.5 KW) | 1 | Starter | Amazon eBay $300.00 FridayParts $320.99 |
| SE501609 | WATER PUMP | 1 | Pump | Amazon eBay $48.99 |
| SE501814 | OIL PUMP (REMAN FOR DZ100057) (5001) | 1 | Pump | Amazon eBay $548.96 FridayParts $199.99 |
| SE501826 | (REMAN FOR AXE17691) (3151) | 1 | Alternator | Amazon eBay $495.00 |
| SE501832 | ALTERNATOR (REMAN FOR AXE28087) (12 V, 185 A) | 1 | Alternator | Amazon eBay |
| SE501838 | ALTERNATOR (REMAN FOR AT387574) (24V, 100A) (3152) | 1 | Alternator | Amazon eBay $144.81 FridayParts $199.39 |
| SE501851 | STARTER MOTOR (REMAN FOR DZ110081 OR RE507670) (12V, 3.4KW) (3075) | 1 | Starter | Amazon eBay $300.00 NAPA $399.13 FridayParts $208.96 KuduParts $249.00 |
| SE501853 | STARTER (REMAN FOR RE506105) (12 V) | 1 | Starter | Amazon eBay $307.99 |
| SE501866 | STARTER (REMAN FOR RE506103) (24 V) | (REMAN FOR RE506103) (24V) | Starter | Amazon eBay $146.29 NAPA $244.36 |
| SE501915 | FUEL INJECTION PUMP (REMAN FOR RE507959) (16A5) | 1 | Pump | Amazon eBay $440.01 FridayParts $377.01 |
| SE501925 | FUEL INJECTION NOZZLE (REMAN FOR DZ100212) (16A5) | 1 | Injector | Amazon eBay $160.10 SinoCMP $149.00 |
| SE502195 | TURBO CHARGER (REMAN FOR RE548751) (65RY) | 1 | Turbocharger | Amazon eBay FridayParts $539.99 |
| SE502218 | TURBO CHARGER (REMAN FOR RE548726) (65RU) | 3 | Turbocharger | Amazon eBay |
| SE502286 | (REMAN FOR DZ110082) (24V, 4KW) (3092) | 1 | Starter | Amazon eBay $195.95 NAPA $247.33 FridayParts $198.99 |
| SE502626 | ALTERNATOR (REMAN FOR RE533516) (12V, 75A) (3138) | 1 | Alternator | Amazon eBay $154.37 NAPA $301.10 |
| SE502627 | ALTERNATOR (REMAN FOR RE533653) (12V, 95A) (3140) | 1 | Alternator | Amazon eBay FridayParts $100.50 |
| SE502628 | ALTERNATOR (REMAN FOR RE533654) (12V, 120A) (3141) | 1 | Alternator | Amazon eBay $640.99 |
| SE502802 | CONTROLLER (REMAN FOR RE526588) (24V/12V, LEVEL 16) (16A5) | 1 | Controller | Amazon eBay $1775.00 |
| SE502838 | TURBO CHARGER (REMAN FOR RE548737) (65QB) | 1 | Turbocharger | Amazon eBay |
| SE503065 | AC COMPRESSOR (REMAN FOR AH169875) (12V, 10PA) (7427, 7414) | 1 | Compressor | Amazon eBay $176.95 |
| T428692 | FAN BELT (LGTH = 1665 mm) | 1 | Belt | Amazon eBay |
| T428694 | (LGTH=1710 mm) (24ES) | 1 | Belt | Amazon eBay $28.00 |
| T428712 | (LGTH=2400 mm) (24GS) | 1 | Belt | Amazon eBay |
| T428724 | FAN BELT (LGTH = 1575 mm) | 1 | Belt | Amazon eBay $42.24 |
| T428868 | (LGTH=2265 mm) (24EY) | 1 | Belt | Amazon eBay $53.95 |
| T428870 | FAN BELT (LGTH = 2415 mm) | 1 | Belt | Amazon eBay |
| T429109 | FAN BELT (LGTH = 1660 mm) | 3 | Belt | Amazon eBay $40.00 NAPA $38.20 |
| 0676879 | Connecting rod | Service part / kit | Amazon eBay $74.38 FridayParts $77.56 | |
| 169-8373 | Fluid Sampling Bottle | 1 | Service part / kit | Amazon eBay $29.99 |
| 174-6854 | Hydrosolv 100 liquid cleaner, 19 L (5 US gallon) | Service part / kit | Amazon eBay NAPA $10.64 | |
| 2255441 | Connecting rod (Grade L) | Service part / kit | Amazon eBay $68.18 FridayParts $94.00 | |
| 2255453 | Connecting rod (Grade J) | Service part / kit | Amazon eBay $82.72 FridayParts $79.86 | |
| 2255454 | Connecting rod (Grade H) | Service part / kit | Amazon eBay $91.14 FridayParts $104.50 | |
| 249-0439 | Oxidation Catalyst Assembly - Round | Service part / kit | Amazon eBay | |
| 249-0474 | Oxidation Catalyst Assembly - Rectangle | Service part / kit | Amazon eBay | |
| 249-0476 | Oxidation Catalyst Assembly - Rectangle | Service part / kit | Amazon eBay | |
| 249-0477 | Oxidation Catalyst Assembly - Rectangle | Service part / kit | Amazon eBay | |
| 256-0331 | Oxidation Catalyst Assembly - Round | Service part / kit | Amazon eBay | |
| 2562235 | Connecting rod | Service part / kit | Amazon eBay $100.08 | |
| 4C-9301 | Coolant Conditioner Test Kit | 1 | Service part / kit | Amazon eBay $30.00 |
| 5P-3413 | Pipe Sealant | 1 | Service part / kit | eBay $12.37 |
| 8N1728 | Connecting rod | Service part / kit | Amazon eBay $249.99 | |
| 8T-5296 | Coolant Conditioner Test Kit | Service part / kit | Amazon eBay eBay | |
| 9S-3263 | Thread lock | 1 | Service part / kit | eBay $30.78 |
| C11/C13 | Cat® Engines with ACERT® Technology | Service part / kit | buy | |
| C15/C18 | Cat® Engines with ACERT® Technology | Service part / kit | buy | |
| C27/C32 | Cat® Engines with ACERT® Technology | Service part / kit | buy | |
| C6.6 | Cat® Engines with ACERT® Technology | Service part / kit | KuduParts $130.00 | |
| LEXE0363-00 | January 2012 | Service part / kit | Amazon eBay | |
| QEHQ1025 | Not explicitly stated in the document | Service part / kit | Amazon eBay | |
| QEHQ9778-01 | Replaces QEHQ9778 | 1 | Service part / kit | Amazon eBay |
| QEHQ9995 | Not explicitly stated | 12/03 | Service part / kit | Amazon eBay |
| R128658 | FAN PULLEY | 1 | Service part / kit | Amazon eBay |
| R128659 | FAN PULLEY | 1 | Service part / kit | Amazon eBay $142.04 |
| R128660 | FAN PULLEY | (OD = 168 MM) | Service part / kit | Amazon eBay $72.11 FridayParts $121.60 |
| R128661 | (OD = 183.5 mm) | 1 | Service part / kit | Amazon eBay $148.48 |
| R128662 | FAN PULLEY (OD = 203 mm) | (OD = 203 MM) | Service part / kit | Amazon eBay $175.75 |
| SE501094 | CONNECTING ROD (REMAN FOR RE500608) (4838) | 1 | Service part / kit | Amazon eBay $436.90 |
| SE501808 | CYLINDER HEAD (REMAN FOR RE525458) (5122) | 2 | Service part / kit | Amazon eBay |
| SE501809 | CYLINDER HEAD (REMAN FOR RE532328) (5130) | 1 | Service part / kit | Amazon eBay |
| SE503064 | AC COMPRESSOR (REMAN FOR AT172975) (24V, 10PA) (7411, 7413) | 1 | Service part / kit | Amazon eBay $697.51 |
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Available documents
Engine spec — LECH3874-02 (Caterpillar)Engine spec — LEDH1045-02 (Caterpillar)Engine spec — LEHM0723-01 (Caterpillar)Engine spec — LEHM0724 (Caterpillar)Engine spec — lecw2462-06 (Caterpillar)Engine spec — lfhh5447 (Caterpillar)Engine spec — lfhh5448 (Caterpillar)Engine spec — lfhh6261 (Caterpillar)Engine spec — lshh6258 (Caterpillar)Engine spec — lshh6261 (Caterpillar)Operator's manual — 3054,+3054B+and+3056+Marine+Engines-Maintenance+Intervals (Caterpillar)Reference — Aug+2010+Engine+Selection+Guide (Caterpillar)Reference — LECW2462-01 (Caterpillar)Owner's manual — 3054 and 3056 Industrial and Generator Set Engines-Engine Safety (Caterpillar)Parts manual — Caterpillar Engines (Caterpillar)Parts manual — KMP-Brand®Parts-Guide-Suitable-for-Caterpillar®By-Product (Caterpillar)Service manual — Caterpillar Diesel Engine Fluid Recommendations (Caterpillar)
This page was generated from the 17 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.