Service Repair Manual
320E, 320E L and
320E LN Excavator
Model: 320E L EXCAVATOR NAZ
Configuration: 320E, 320E L & 320E LN Excavators NAZ00001-UP (MACHINE) POWERED BY C6.6 Engine
Disassembly and Assembly
C6.6 Engines for Caterpillar Built Machines
Media Number -KENR9249-07
Publication Date -01/09/2015
Date Updated -19/06/2017
Inlet and Exhaust Valve Springs - Remove and Install
SMCS - 1108-010
Tool Part Number
Valve Spring Compressor
Crankshaft Turning Tool
Engine Turning Tool
(1) The Crankshaft Turning Tool is used on the front pulley.
(2) This Tool is used in the aperture for the electric starting motor.
a. Remove the rocker shaft assembly. Refer to Disassembly and Assembly, "Rocker Shaft and
Pushrod - Remove" for the correct procedure.
Note: Either Tooling (B) can be used. Use the Tooling that is most suitable.
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
Note: The following procedure should be adopted to remove the valve springs when the cylinder
head is installed to the engine. Refer to Disassembly and Assembly, "Inlet and Exhaust Valves -
Remove and Install" for the procedure to remove the valve springs from a cylinder head that has
been removed from 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 too