Service Repair Manual
320D LN Excavator
Model: 320D LN EXCAVATOR WBN
Configuration: 320D LN Excavator WBN00001-UP (MACHINE) POWERED BY C6.4 Engine
Disassembly and Assembly
C6.4 Engine for Caterpillar Built Machines
Media Number -KENR8106-09
Publication Date -01/10/2017
Date Updated -18/10/2017
Inlet and Exhaust Valve Springs - Remove and Install
SMCS - 1108-010
Tool Part Number
Valve Spring Compressor
Crankshaft Turning Tool
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".
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.
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
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 tooling to
release the spring force.
Plug the apertures for the push rods in the cylinder head in order to
prevent the entry of loose parts into the engine.
Ensure that the valve spring is compressed squarely or damage to the
valve stem may occur.