Field Remedy: 1558
| Subject: |
Oil pump - Sprocket nut gets loose |
| Models: |
Engines: |
Option: |
| Astra-G 2000...2005,Corsa-C
2001...2005,Meriva 2004...2005,Astra-H 2004...2005 |
Y17DT| Y17DTL| Z17DTL,Y17DT| Y17DTL|
Z17DTH,Y17DT| Z17DTH,Z17DTL| Z17DTH |
None |
| Complaint: |
In some cases it might be possible that the
oil pump drive gear nut detaches during engine operation, causing
the timing belt to jump over. Complete engine damages are extremely
rare. |
| Cause: |
Inadmissible offset of oil pump sprocket
during assembly in engine plant. |
| Production: |
Implementation of an addition monitoring
operation at assembly plant. A 100% check will be carried out
regarding: - Checking the offset between the pump sprocket and the
timing belt. - The gap between the shafts end and the nut outer
surface. Furthermore the tightening torque for the oil pump drive
gear has been increased to 60 Nm as of the following engine number:
11806070 (December 2004). |
Remedy:
In case of concern please repair according to engine damage. Please
note that the tightening torque for the oil pump drive gear has been
increased to 60 Nm.
Tightening procedure: Tighten the oil pump drive gear nut by 60 Nm and
wait 60 seconds (30 seconds is a minimum requirment). Loose the drive
gear nut. Retighten the drive gear nut by 60 Nm again.
For claiming costs please contact the Technical Assistance Centre
(TAC).
Note: In case of engine or cylinder head replacement the replaced part
and the failed oil pump has to be returned to the
Warranty Parts Return / European Core Return Centre.
The regular warranty procedure should be used for claiming
Set-up-time.
| FunctionalGroup: |
J - Engine |
| Complaint Group: |
11 - Loose or Comes off |
| Trouble Code: |
None |
|
