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Home›Engines›Caterpillar Cat C15 ACERT

Caterpillar Cat C15 ACERT Engine

The Caterpillar Cat C15 ACERT is a 15.2 L 6-cylinder turbocharged and aftercooled engine rated at 1850 rpm, producing up to 259 kW. It powers generator sets from Caterpillar, including the 735.

Also known as: Caterpillar Cat C15 ACERT

Part of the Caterpillar C15 engine family — 5 variants share parts & fitment.

15.2 L
Displacement
6
Cylinders
1850 rpm
Rated speed
259 kW
Gross power
On this pageSpecsGenerator setsFAQTorque & specsProcedures

Engine specifications

Displacement15.2 L
Cylinders6
AspirationTurbocharged and Aftercooled
Rated speed1850 rpm
Gross power259 kW

Service specifications

6
TypeItemValueUnitCondition
TorqueBearing Nut Torque (129-3253 Spanner Socket, 121-9871 Bearing Nut)2375N·m
TorqueBearing Nut Torque (129-3254 Spanner Socket, 119-3711 Bearing Nut)2375N·m
TorqueLocknut torque (260-0626 Spanner Socket Assembly, 1T-0229 High Torque Locknut)985N·m
TorqueSolenoid nut torque (FT3198 Solenoid Tool, 352-2733 solenoid)3.75Nm+/- .75
TorqueTightening torque for 369-5916 Lifting Eyebolt (M12 Hex Bit)115N·m
TorqueWorking torque capacity of locknut spanner wrenches (126-6608 / 126-6609)950N·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

3
Installation 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

  1. Place 207-3440 Loading Mandrel over small piston.
  2. Place inner portion of two-piece seal onto mandrel and push onto piston using 207-3442 Ring Pusher. Repeat for outer portion of seal.
  3. With both sets of seals installed, push piston assembly into 207-3444 Seal Sizer.
  4. 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

  1. Install adapter groups evenly spaced in the holes in the sprocket flange; install the hooked adapter (1) first, then the plate (2).
  2. Fasten plate to adapter with two bolts (3) and washers (4); plate retains adapter in sprocket wheel.
  3. Before installing remainder of tooling, loosen bolt (5) to leave about 6.35 mm (0.25 in) gap between retainer (6) and sprocket wheel.
  4. 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

  1. 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.
  2. Insert four 174-5354 Plug Assemblies into exterior holes and finger tighten.
  3. Screw in attached bolts until guide noses protrude through brake piston.
  4. Insert discontinued 6N-9155 Pin into each guide hole and remove bolts and plugs.
  5. 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.

Parts cataloged across the Caterpillar C15 family

26
Part #DescriptionCategory
95-ampAlternator, 95-ampAlternator
356-1428Fuel FilterFuel filter
588-2631Water Separator and Fuel FilterFuel filter
MXS00001-UpFuel FilterFuel filter
10R-9925Oil FilterOil filter
588-1049Engine Oil FilterOil filter
BXS00001-UpOil FilterOil filter
10R-9923Exhaust Manifold StudService part / kit
173-6532Radio 12V AM/FM DeluxeService part / kit
175-6530Radio 12V AM/FMService part / kit
214-7318Tool Kit and BoxService part / kit
246-0789Dump Body - Optional 11.3 m³ (14.8 yd³)Service part / kit
246-0805Belly GuardsService part / kit
246-0809Ejector Body - Optional 15.2 m³ (19.9 yd³)Service part / kit
249-4899Standard Bucket*Service part / kit
588-0941Quick Disconnect FittingsService part / kit
588-3621Variable Fan HubService part / kit
884949driftService part / kit
AEHQ5645-02Parts book, CD romService part / kit
AEHQ5648-03735 Articulated TruckService part / kit
AEHQ5679-02Parts book, paperService part / kit
LEBE0009-00Cat NOx Reduction System and Clean Emissions Module (DOC+DPF+CRS)Service part / kit
LEDH4624-01Cat ADEM 4 ControllerService part / kit
MCB3067460PistonService part / kit
AN500T0143STARTER MOTORStarter
AN500T0144STARTER MOTOR - w/DriveStarter

Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.

Common questions

What is the displacement of the Caterpillar Cat C15 ACERT?

The Caterpillar Cat C15 ACERT has a displacement of 15.2 liters with 6 cylinders.

Which generators use the Caterpillar Cat C15 ACERT engine?

The Caterpillar Cat C15 ACERT powers 1 generator set(s), including Caterpillar 735.