Maintenance schedule
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Coolant | 54.9 L | — | |||
| Oil | 70.0 L | — | 250 hr |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
The Caterpillar C27 ACERT is a 27 L 12-cylinder turbocharged-aftercooled engine rated at 2100 rpm, producing up to 783 kW. It powers generator sets from Caterpillar, including the 773 and C27. It holds 68.1 L (18.0 gal) of oil and 54.9 L (14.5 gal) of coolant.
Also known as: Caterpillar C27 ACERT
| Oil capacity | 68.1 L |
|---|---|
| Coolant capacity | 54.9 L |
| Displacement | 27.0 L |
| Cylinders | 12 |
| Aspiration | Turbocharged-Aftercooled |
| Rated speed | 2100 rpm |
| Gross power | 783 kW |
This engine also powers 110 machine(s) on Power Equipment Info.
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Coolant | 54.9 L | — | |||
| Oil | 70.0 L | — | 250 hr |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Primary air filter element | Change | 250 hr | When changing the primary element at 250 operating hours (basis of the without-indicator filter-change comparison) | |
| Secondary air filter element | Change | 750 hr | When changing the secondary element at 750 operating hours (basis of the without-indicator filter-change comparison) |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Other | Air compressor air flow | 374 | L/min (13.2 cfm) @ 1250 rpm | C7 ACERT, C9 ACERT |
| Other | Air compressor air flow | 445 | L/min (15.7 cfm) @ 1250 rpm | C11 ACERT, C13 ACERT, C15 ACERT, C18 ACERT |
| Other | Air compressor air flow | 467 | L/min (16.5 cfm) @ 1250 rpm | C7 ACERT, C9 ACERT |
| Other | Air compressor air flow | 889 | L/min (31.4 cfm) @ 1250 rpm | C11 ACERT, C13 ACERT, C15 ACERT, C18 ACERT |
| Other | Radiator cooling package maximum elevation | 1524 | m (5000 ft) | with 50/50 water/Extended Life Coolant mixture |
| Other | Rating condition (diesel 7 L and higher) | 99 kPa (29.31 in Hg) dry barometer, 25°C (77°F) | SAE J1995 inlet air standard | |
| Other | Rating condition (diesel up to 6.6 L) | 100 kPa (29.5 in Hg) total barometric pressure, 1 kPa (.295 in Hg) vapor pressure, 25°C (77°F) | ISO/TR14396 inlet air standard | |
| Other | Rating condition (gas) | 100 kPa (29.61 in Hg) and 25°C (77°F) | SAE J1349 standard | |
| Temperature | Radiator cooling package design ambient temperature | 48.9 | °C (120°F) | coolant mixture 50/50 (water/Caterpillar Extended Life Coolant), maximum elevation 1524 m (5000 ft) |
| Torque | Air compressor SAE "A" hydraulic pump drive maximum torque (374 L/min and 467 L/min compressors) | 60 | N•m (44 lb-ft) | C7, C9 ACERT |
| Torque | Air compressor maximum torque (374 L/min / 13.2 cfm @ 1250 rpm, C7/C9) | 60 | N·m (44 lb-ft) | 374 L/min (13.2 cfm) @ 1250 rpm |
| Torque | Air compressor maximum torque (467 L/min / 16.5 cfm @ 1250 rpm, C7/C9) | 60 | N·m (44 lb-ft) | 467 L/min (16.5 cfm) @ 1250 rpm |
| Torque | Bearing Nut Torque (129-3253 Spanner Socket, 121-9871 Bearing Nut) | 2375 | N·m | |
| Torque | Bearing Nut Torque (129-3254 Spanner Socket, 119-3711 Bearing Nut) | 2375 | N·m | |
| Torque | Locknut torque (260-0626 Spanner Socket Assembly, 1T-0229 High Torque Locknut) | 985 | N·m | |
| Torque | Solenoid nut torque (FT3198 Solenoid Tool, 352-2733 solenoid) | 3.75 | Nm | +/- .75 |
| Torque | Tightening torque for 369-5916 Lifting Eyebolt (M12 Hex Bit) | 115 | N·m | |
| Torque | Working torque capacity of locknut spanner wrenches (126-6608 / 126-6609) | 950 | N·m |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Coolant | 50/50 (water/Caterpillar Extended Life Coolant) | below 48°C | Radiator cooling packages designed for up to 48.9°C (120°F) ambient up to a maximum elevation of 1524 m (5000 ft) | ||
| Coolant | 50/50 mixture water/Caterpillar Extended Life Coolant | below 48°C | Radiator cooling packages designed for up to 48.9° C (120° F) ambient; coolant sump refill capacities vary by oil sump/pan (18 L to 106 L service refill with new oil filter change) | ||
| Coolant | Cat DEAC | Diesel; 3,000 Service Hours or Three Years; annual S·O·SSM Level 2 coolant sampling and analysis | |||
| 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 NGEC | Natural Gas; 16,000 Service Hours or Three Years; use interval that occurs first | |||
| Engine oil | Cat NGEO | Natural Gas | |||
| Engine oil | low sulfated ash oil | Required for U.S. EPA Tier 4 Final, EU Stage IV engines. | |||
| Engine oil | Cat Arctic DEO SYN SAE 0W-30 | -40°C to 30°C | Engine Crankcase; Industrial Engines | ||
| Engine oil | Cat DEO SYN SAE 5W-40 | -30°C to 50°C | Engine Crankcase; Industrial Engines | ||
| Engine oil | Cat DEO SAE 10W-30 | -18°C to 40°C | Engine Crankcase; Industrial Engines | ||
| Engine oil | Cat DEO SAE 15W-40 | -9°C to 50°C | Engine Crankcase; Industrial Engines | ||
| Fuel | Ultra Low Sulfur Diesel (ULSD) | Contains less than or equal to 15 parts per million sulfur (mg/kg); required for U.S. EPA Tier 4 Final, EU Stage IV engines. B20 biodiesel capability available. | |||
| Grease | Cat Generator Set Grease | Part Number 108-8611 |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Tools: 207-3440 Loading Mandrel, 207-3442 Ring Pusher, 207-3444 Seal Sizer, 8F-8178 Bolt
Tools: 8T-5243 Adapter Group, 7B-2499 Ring, 6H-4158 Pin, 5F-9306 Arm, 8S-9975 Ram Adapter, 9S-8900 Cylinder Group
Tools: 174-5354 STOR Plug Assembly, 134-2562 Guides, 9S-9334 Plugs, 6N-9155 Pin
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Other equipment known to use this engine, via filter-application cross-reference — useful for sourcing parts even when your exact machine isn't listed elsewhere on this page.
The Caterpillar C27 ACERT engine has an oil capacity of 68.1 liters.
The Caterpillar C27 ACERT has a displacement of 27.0 liters with 12 cylinders.
The Caterpillar C27 ACERT powers 3 generator set(s), including Caterpillar 773, Caterpillar C27, Caterpillar C27 ACERT.
The Caterpillar C27 ACERT oil change interval is every 250 hours.