Service Manual

Air Compressor Oil Drain Line ISB, ISBe and QSB (Common Rail [...]
Page 12-20 Section 12 - Compressed Air System - Group 12
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Air Compressor Oil Drain Line
(012-009)
Initial Check
Inspect the air compressor oil drain line for cracks, cuts,
or collapsing (if equipped).
Remove
If equipped, remove the air compressor oil drain line at the
compressor.
Remove the air compressor oil drain line on the side of
the engine block.
Inspect for Reuse
Check the flexible lines for splits, cracks, or hardening.
Check the solid lines for kinks, cracks, or corrosion.
Install
NOTE: Replace the air compressor oil drain line block
connection o-ring or gasket.
Install the air compressor oil drain line onto the air
compressor connection. Do not tighten completely.
Install the air compressor oil drain line onto the cylinder
block connection and tighten.
Tighten the air compressor oil drain line connection to the
air compressor.