Diesel Engine - Oil Leak at Engine Air Intake Duct

Date: June 4, 2008

Order No.: S-B-09.20/29

Supersedes:

Group: 09

SUBJECT:
Model 164.122/822
Model 211.022
Model 251.122
Equipped with Engine 642

Oil Leak at the Engine Air Intake Duct

If you receive customer reports in the above model vehicles of oil leakage at the air intake duct downstream of the air filter to the turbocharger, the cause may be a damaged or incorrectly installed seal. To resolve, perform the below procedure.





1. If the seal ring between turbocharger and air intake duct is leaking (Figure 1), is damaged or has been installed incorrectly (Figure 2), the seal must be replaced.

2. Observe the installation sequence. The seal should be installed on the connection fitting (air intake) of the turbocharger and not in the intake pipe, before the pipe is installed on the turbo charger.

3. Inspect the clamp and replace if necessary. Tighten to 4 Nm.





Note:
Engine oil venting occurs on the right hand side of the engine air intake duct. For this reason there is always some oil in the engine air intake duct, see (Figure 3). This is no justification for replacing the turbocharger. Turbochargers replaced for this reason will not be covered by warranty.





Parts Information

Note:
The following allowable labor operations should be used when submitting a warranty claim for this repair. This information has been generated on June 4, 2008. Please refer to Netstar --> Star TekInfo --> Star Time for the most current labor time allowance.





In Case of Warranty, use the table.