Service Repair Manual
Models
311D LRR Excavator
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Product: EXCAVATOR
Model: 311D LRR EXCAVATOR LKA
Configuration: 311D LRR Excavator LKA00001-UP (MACHINE) POWERED BY C4.2 Engine
Disassembly and Assembly
C4.2 Engine for Caterpillar Built Machines
Media Number -KENR8105-04
Publication Date -01/06/2013
Date Updated -12/06/2013
i02767700
Inlet and Exhaust Valve Springs - Remove and Install
SMCS - 1108-010
Removal Procedure
Table 1
Required Tools
Tool
Part Number
Part Description
Qty
A
9U-6195
Valve Spring Compressor
1
B
9U-6198
Crankshaft Turning Tool
1
Start By:
A. Remove the rocker shaft assembly. Refer to Disassembly and Assembly, "Rocker Shaft and
Pushrod - Remove".
B. Remove the valve mechanism cover base. Refer to Disassembly and Assembly, "Valve
Mechanism Cover Base - Remove and Install".
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
Note: The following procedure should be adopted in order to remove the valve springs when the
cylinder head is installed to the engine.
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Note: Ensure that the appropriate piston is at top dead center before the valve spring is removed.
Failure to ensure that the piston is at top dead center may allow the valve to drop into the cylinder
bore.
NOTICE
Plug the apertures for the push rods in the cylinder head in order to
prevent the entry of loose parts into the engine.
Illustration 1
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Illustration 2
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Personal injury can result from being struck by parts propelled by a
released spring force.
Make sure to wear all necessary protective equipment.
Follow the recommended procedure and use all recommended