2888498 - X15 GEARBOX/DIFFERENTIAL OIL LEAKS

An oil leak is seen from the gearbox/differential
Results of the tests
0PRELIMINARY CHECKSAll OKProblems metOperation
Check whether the fault is accompanied by a noise from the gearbox with the vehicle stationary and in neutralCheck the gearbox / differential oil level Op. 2110A04Continue to Step 1Noise detected from the gearboxSee table   S22 
Restore the correct level and carry out a road test.If the defect persists, Continue to Step 1
1LEAKS CHECKAll OKProblems metOperation
Thoroughly wash the gearbox, cover it with talc and road test the vehicle.Visually check that there are no leaks

In particular, check the condition of the gaskets:

  • gearbox input shaft gasket
  • rear cover gasket
  • differential oil seal
Continue to Step 2Leaks from the sealsReplace the gaskets Op. 2110C22
Leaks from rear cover gasketReplace the rear cover gasket Op. 2110C30
Leaks from differential oil sealReplace the oil seal Op.   2110D63 
2GEARBOX CASING CHECKAll OKProblems metOperation
Visually check the condition of the gearbox casing, using talcContinue to Step 3Casing damaged, cracked or distortedReplace the gearbox casing, the rear cover, or the entire gearbox (see Assembly 2110B)
3CHECKING CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisFault persistsSearch for the fault starting from another symptom'