Service Repair Manual
312B and 312B L Excavator
Model: 312B EXCAVATOR 6SW
Configuration: 312B & 312B L Excavators 6SW00001-UP (MACHINE) POWERED BY 3054 Engine
Disassembly and Assembly
3054 Engine for Caterpillar Built Machines
Media Number -SENR6241-13
Publication Date -01/08/2008
Date Updated -04/08/2008
Camshaft - Remove and Install
SMCS - 1210-010
A. Remove the rocker shaft and the pushrods. Refer to Disassembly and Assembly, "Rocker
Shaft and Pushrods - Remove".
B. Remove the fuel transfer pump. Refer to Disassembly and Assembly, "Fuel Transfer Pump -
C. Remove the front housing. Refer to Disassembly and Assembly, "Housing (Front) -
D. Remove the camshaft gear. Refer to Disassembly and Assembly, "Camshaft Gear - 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
312B & 312B L Excavators 6SW00001-UP (MACHINE) POWERED BY 3054 Engin...
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.
1. Turn the engine upside-down so the valve lifters are held in a position away from the
2. Remove thrust washer (1). Make a note of the location of the hollow dowel (X) for
Do not damage the lobes or the bearings when the camshaft is removed