Service parts for the 725
Grouped by system, with how many of each the parts manual calls for.
Fuel system
1 requiredOil system
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
Ratings spec sheet not in our library yet — see the documents below.
Engine
| Displacement | 11.1 L |
|---|---|
| Aspiration | Turbocharged Aftercooled (TA) |
| Rated speed | 1800 rpm |
Filters for the Caterpillar C11 ACERT
2Engine-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.
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 | |
|---|---|---|---|---|
| Oil filter | P551808 | Lube Filter, Spin-On Full Flow | CATERPILLAR 1R1808, CATERPILLAR 1R808, NAPA 7792, BALDWIN B7299 | KuduParts $80.00 |
| Fuel filter | P550625 | Fuel Filter, Spin-On Secondary | CATERPILLAR 1165436, CATERPILLAR 1R0762, NAPA 3640, BALDWIN BF7753 | buy |
Maintenance & consumables
for the Caterpillar C11 ACERT| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Fuel filter | 2 micron | 1165436 | Amazon eBay | ||
| Oil filter | 3890434 | Amazon eBay $82.42 PartsGeek $30.97 NAPA $45.70 |
Service specifications
6| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| 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.
Procedures
3Installation of two-piece seal into slack adjuster piston (209-6381 Seal Installer Group) maintenance
Tools: 207-3440 Loading Mandrel, 207-3442 Ring Pusher, 207-3444 Seal Sizer, 8F-8178 Bolt
- Place 207-3440 Loading Mandrel over small piston.
- Place inner portion of two-piece seal onto mandrel and push onto piston using 207-3442 Ring Pusher. Repeat for outer portion of seal.
- With both sets of seals installed, push piston assembly into 207-3444 Seal Sizer.
- Allow seals to compress for one minute and then install small piston into large piston.
Sprocket wheel removal - 8T-5243 Adapter Group installation maintenance
Tools: 8T-5243 Adapter Group, 7B-2499 Ring, 6H-4158 Pin, 5F-9306 Arm, 8S-9975 Ram Adapter, 9S-8900 Cylinder Group
- Install adapter groups evenly spaced in the holes in the sprocket flange; install the hooked adapter (1) first, then the plate (2).
- Fasten plate to adapter with two bolts (3) and washers (4); plate retains adapter in sprocket wheel.
- Before installing remainder of tooling, loosen bolt (5) to leave about 6.35 mm (0.25 in) gap between retainer (6) and sprocket wheel.
- Install the hydraulic cylinder and the remainder of the tooling in the conventional manner.
STOR Plug Assembly application for disc brake piston retainer spring (174-5354) repair
Tools: 174-5354 STOR Plug Assembly, 134-2562 Guides, 9S-9334 Plugs, 6N-9155 Pin
- Insert four 134-2562 Guides and discontinued 130-8718 Springs as an assembly into brake group anchor exterior holes where 9S-9334 Plugs are normally located.
- Insert four 174-5354 Plug Assemblies into exterior holes and finger tighten.
- Screw in attached bolts until guide noses protrude through brake piston.
- Insert discontinued 6N-9155 Pin into each guide hole and remove bolts and plugs.
- Insert four 9S-9334 Plugs into vacated holes.
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 725 use?
The Caterpillar 725 is powered by the Caterpillar C11 ACERT engine.
What oil filter does the Caterpillar 725 use?
The Caterpillar 725 uses oil filter part number 3890434.
Which fuel filter part number does the Caterpillar 725 take?
The Caterpillar 725 uses fuel filter part number 1165436.
Parts
4| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 173-6530 | Radio 12V AM/FM | 1 | Service part / kit | Amazon eBay |
| 173-6532 | Radio 12V AM/FM Deluxe | 1 | Service part / kit | Amazon eBay |
| 214-7318 | Tool Kit and Box | 1 | Service part / kit | Amazon eBay |
| AEHQ5634-03 | 730 Ejector Articulated Truck Specifications | Service part / kit | Amazon |
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
This page was generated from the 4 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.