BODY 1149107 - Caterpillar

Drain the coolant from the cooling system into a suitable container for storage or for disposal. Refer to Operation and Maintenance Manual, "Cooling System Coolant - Change" for the correct draining procedure.
Illustration 1 g03369765
Typical example
Illustration 2 g03369763
Disconnect the upper radiator hose from water temperature regulator housing (1).
Follow Step 3.a through Step 3.c in order to disconnect the harness assemblies from boost pressure sensor (6) and inlet air temperature sensor (5).
Slide the locking tab into the unlocked position.
Disconnect harness assembly (2) from boost pressure sensor (4).
Disconnect harness assembly (3) from inlet air temperature sensor (5). Note: The harness assembly for the air temperature sensor (5) has no locking tab.
Illustration 3 g03369783
Illustration 4 g03369782
Disconnect harness assembly (7) from coolant temperature sensor (6).
Remove the air inlet hose from inlet connection (8) on inlet manifold (9).
Remove all cable straps that secure harness assembly (4) to the cylinder head or to the inlet manifold. The harness assembly should be positioned in order to avoid causing an obstruction during the removal of the cylinder head.
Illustration 5 g03369766
Disconnect harness assembly (12) from wastegate solenoid (13).
Remove bolt (14) and bolt (19) from tube assembly (18).
Disconnect tube assembly (18) from the cylinder head.
Remove O-ring seal (17) (not shown) from tube assembly (19).
Remove bolt (15) from tube assembly (16).
Follow Step 12.a through Step 12.b in order to disconnect tube assembly (16).
Remove banjo bolt (10).
Remove sealing washers (11) (not shown).
Illustration 6 g03369767
Remove bolts (20). Remove bypass tube (21) from the cylinder head. Remove O-ring seals (22) and O-ring seal (23) from bypass tube (21).
Illustration 7 g03369768
Illustration 8 g03369769
Gradually loosen bolts (24) in the reverse numerical order to the tightening sequence. Refer to the illustration 8. Sequence for tightening the bolts for the cylinder headNote: Follow the correct sequence in order to help prevent distortion of the cylinder head.
Remove bolts (24) from cylinder head (25).
Illustration 9 g03369770
Attach a suitable lifting device (26) to cylinder head (25). Support the weight of the cylinder head. The weight of the cylinder head is approximately 66 kg (145.5 lb). Note: A spreader bar must be used in order to distribute the weight of the cylinder head during the lifting operation.
Use the suitable lifting device (26) to lift cylinder head (25) carefully off the cylinder block. Note: Do not use a lever to separate the cylinder head from the cylinder block. Take care not to damage the machined surfaces of the cylinder head during the removal procedure.
Place the cylinder head on a surface that will not scratch the face of the cylinder head.
Illustration 10 g03369771
Remove cylinder head gasket (28).
Note the position of dowels (27) in the cylinder block.
If necessary, remove the water temperature regulator from the cylinder head. Refer to Disassembly and Assembly, "Water Temperature Regulator - Remove and Install" for the correct procedure.
If necessary, remove the inlet manifold from the cylinder head. Refer to Disassembly and Assembly, "Inlet manifold - Remove and Install" for the correct procedure.