RING-WEAR 1400176 - Caterpillar

Removal Procedure
Start By:
Remove the rocker arms and the pushrods. Refer to Disassembly and Assembly, "Rocker Shaft and Pushrod - Remove".
Remove the unit injector hydraulic pump. Refer to Disassembly and Assembly, "Unit Injector Hydraulic Pump - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
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, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Remove the front cover.
Turn the crankshaft to top center compression stroke for the No. 1 piston. Install the timing bolt in the flywheel. This is for timing during installation.
Illustration 1 g00987503
Ensure that the timing marks on camshaft drive gear (1), the idler gear, and the crankshaft gear are aligned.
Wire the valve lifters away from the camshaft.
Remove bolts (2) and camshaft retainer plate (3) .
Illustration 2 g00987512
Remove camshaft (4) from the cylinder block.