Service Manual

ISB, ISBe and QSB (Common Rail [...] Air Compressor Cylinder Head, Two Cylinder
Section 12 - Compressed Air System - Group 12 Page 12-19
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Clean and Inspect for Reuse
Inspect the compressor housing for cracks or other
damage.
Clean the piston crown.
Gasket sealing surfaces must be clean and free of all old
gasket material, carbon, rust, and other buildup. Surfaces
must be free of scratches, gouges, burrs, and other
deformities.
The valve plate and cylinder head must be replaced if
there are any signs of cavitation
Install
NOTE: New gaskets must be used.
Install the new cylinder head valve plate gasket.
Install the cylinder head valve plate.
Install the new cylinder head gasket.
Install the cylinder head.
Lubricate and install the six capscrews.
Tighten the capscrews in the sequence shown.
Torque Value:
Step 1 - All capscrews
Step 1 20 N•m [ 177 in-lb ]
Torque Value:
Step 2 - All capscrews
Step 1 33 N•m [ 24 ft-lb ]
Finishing Steps
WARNING
Batteries can emit explosive gases. To reduce the
possibility of personal injury, always ventilate the
compartment before servicing the batteries. To
reduce the possibility of arcing, remove the negative
(-) battery cable first and attach the negative (-)
battery cable last.
• Install the air compressor coolant lines. Refer to the
OEM service manual.
• Install the air lines.
• Fill the engine cooling system. Refer to Procedure
008-018 in Section 8.
• Connect the battery. Refer to the OEM service
manual.
• Operate the engine and check for leaks.
• Operate the engine to activate the air compressor.