C15 Petroleum Engines Caterpillar

Cylinder Head - Remove

Usage:

C15 HAZ

Removal Procedure

Start By:

Remove the camshaft gear. Refer to Disassembly and Assembly, "Camshaft Gear - Remove".
Remove the electronic unit injectors. Refer to Disassembly and Assembly, "Electronic Unit Injector - Remove".
Remove the valve mechanism cover base. Refer to Disassembly and Assembly, "Valve Mechanism Cover Base - Remove and Install".
Remove the turbocharger. Refer to Disassembly and Assembly, "Turbocharger - Remove".
Remove the exhaust manifold. Refer to Disassembly and Assembly, "Exhaust Manifold - Remove and Install".
Remove the aftercooler. Refer to Disassembly and Assembly, "Aftercooler - Remove".
Remove the water temperature regulator. Refer to Disassembly and Assembly, "Water Temperature Regulator - Remove and Install ".

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NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products. Dispose of all fluids according to local regulations and mandates.

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NOTICE

Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life.

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NOTICE

Do not turn the crankshaft or the camshaft while the camshaft gear is removed. If the front gear group is not correctly timed during installation, interference can occur between the pistons and the valves, resulting in damage to the engine.

If necessary, remove the air lines group for the turbocharger.
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Illustration 1 g01067189
Remove bolts (2) and thrust plate (1).
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Illustration 2 g01067187
Remove sealing plate (3) and adapter assembly (4).
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Illustration 3 g01067186
Remove O-ring seal (5) and O-ring seal (6) from sealing plate (3).
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Illustration 4 g01067185
Disconnect hose assembly (8) at the cylinder head. Remove the bolt and the clip that secures the hose assembly to the front housing. Remove the bolt and the clip that secures the hose assembly to the cylinder head.
Disconnect hose assembly (9) at the cylinder head.
Remove bolt (14) and the breather tube from the cylinder head.
Remove bolts (7) and remove the bracket from the cylinder head.
Disconnect boost pressure sensor (10).
Disconnect inlet air temperature sensor (13).
If necessary, remove bolts (12) and remove air inlet elbow (11) from the cylinder head. Remove the gasket from the cylinder head.
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Illustration 5 g01067444
Attach a suitable lifting device to cylinder head (16). The weight of the cylinder head is approximately 235 kg (518 lb). Ensure that all of the following items are clear from the cylinder head: harness assemblies, tube assemblies and hose assemblies.
Remove cylinder head bolts (15).
Carefully remove the cylinder head.
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Illustration 6 g01067188
Remove cylinder head gasket (17).
Remove spacer plate (18).
Remove seals (22) and seal (20).
Remove spacer plate gasket (21).
Remove O-ring seal (19) from the dowel in the cylinder block.