Service Manual

Turbocharger Oil Drain Line ISB, ISBe and QSB (Common Rail [...]
Page 10-58 Section 10 - Air Intake System - Group 10
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Clean and Inspect for Reuse
Clean the gasket sealing surfaces.
Clean the o-ring seating bore, and make sure it is free of
dirt and debris.
CAUTION
A restricted oil drain line can cause the turbocharger
bearing housing to be pressurized, causing oil to leak
past the seal rings, which can cause component
damage.
Inspect the line for cracks, wear, and damage.
Inspect the o-ring for fretting and cracking and replace as
necessary.
NOTE: An adequate supply of good filtered oil is very
important to the life of the turbocharger. Be positive that
high-quality oil is used and that it and the oil filter are
changed according to the maintenance recommendations.
See the proper Operation and Maintenance Manual for
maintenance recommendations.
Install
Automotive and Industrial
Apply a thin film of oil to the drain line o-rings.
Push the drain line into the drain line boss. Make sure
both o-rings are completely seated in the bore.
Install the drain line capscrews with a new gasket.
M6
Torque Value: 10 N•m [ 89 in-lb ]
M8
Torque Value: 23 N•m [ 204 in-lb ]
Operate the engine and check for leaks.