3145, 3150 & 3160 ELECTRIC SET ENGINES Caterpillar

Cylinder Heads

Usage:

Remove Cylinder Head Assemblies

1. Drain the cooling system, the capacity is approx. 26 U.S. qts. (24.6 liter).

2. Remove the clamp (1) from the water sleeve between the cylinder head and the timing gear cover.

WATER SLEEVE CLAMP
1. Clamp.

3. Use the 8S6692 Water Sleeve Tool (2) to move water sleeve (3) into front cover.

4. Remove the cylinder head retaining bolts (4) and (5).

MOVING WATER SLEEVE
2. 8S6692 Water Sleeve Tool. 3. Water Sleeve.

CYLINDER HEAD (Typical Example)
4. Bolts (four each head). 5. Bolts (eighteen each head).

Show/hide table

NOTICE

Be sure fuel injection nozzles are removed before removing head. Nozzles extend through the head and nozzle tips can be broken off if nozzles are not removed from the head.

REMOVING CYLINDER HEAD (Typical Example)

5. Install two 1P7407 Lifting Eye Bolts in the cylinder head. Attach a hoist and remove the cylinder head assembly, the weight is approx. 85 lbs. (39 kg).

Install Cylinder Head Assemblies

1. Clean the mating surfaces of the cylinder head and cylinder block. Install new cylinder head gasket, clean and dry.

NOTE: Clean bores in cylinder head and inspect and lubricate O-rings before installing water sleeve.

2. Install two 1P7407 Lifting Eye Bolts in the cylinder head. Attach a hoist and install the cylinder head assembly. Coat the cylinder head retaining bolt threads with 9M3710 Anti-Seize Compound. Install the bolts and tighten in the following Step sequence.

A: Tighten bolts 1 through 18 in numerical order to 60 ± 10 lb.ft. (8.3 ± 1.4 mkg).

B: Retighten bolts 1 through 18 in numerical order to 95 ± 5 lb.ft. (13.1 ± 0.7 mkg).

C: Finally tighten bolts 1 through 18 in numerical order (hand tighten only) to 95 ± 5 lb.ft. (13.1 ± 0.7 mkg).

D: Tighten bolts 19, 20, 21, and 22 in numerical order to 32 ± 5 lb.ft. (4.4 ± 0.7 mkg).

CYLINDER HEAD BOLT LOCATION

3. Use the 8S6692 Water Sleeve Tool to slide water sleeve into cylinder head and install clamp.

Disassemble Cylinder Head

1. Place head on the FT806 Cylinder Head Bench or the 8S6691 Cylinder Head Stand.

NOTE: Use FT967 Adapter Plates to mount head on the FT806 Cylinder Head Bench.

2. Use a 5S1330 or 7F4291 Valve Spring Compressor to remove the valves and valve springs.

REMOVING VALVES
1. 5S1330 Valve Spring Compressor.

3. Use the 8S2263 Valve Spring Tester to check valve spring tension.

4. The exhaust valve seats have replaceable inserts. To remove, use the 8S7170 Valve Seat Insert Puller Group.

REMOVING EXHAUST VALVE SEAT INSERTS

NOTE: The valve guides are cast in the cylinder head. If the guides show wear or bellmouthing, they can be restored to original tolerances through knurling.