Service Repair Manual
Model: 320E EXCAVATOR AWS
Configuration: 320E & 320E L Excavators AWS00001-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 Valves - Remove and Install
SMCS - 1105-010
Tool Part Number
Valve Spring Compressor
a. Remove the cylinder head. Refer to Disassembly and Assembly, "Cylinder Head - Remove"
for the correct procedure.
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
1. Clean the bottom mating surface of the cylinder head. Check the depth of the valves below
the face of the cylinder head before the valve springs are removed. Refer to Specifications,
"Cylinder Head Valves" for the correct dimensions.
2. Place a temporary identification mark on the heads of the valves in order to identify the
Note: Inlet valves have a recess in the center of the head.
3. Use a suitable lifting device to position the cylinder head with the valve springs upward.
The weight of the cylinder head is approximately 65 kg (143 lb).
Note: Ensure that the cylinder head is kept on a clean, soft surface in order to prevent
damage to the machined face.
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.
4. Install Tooling (A) into position