SECTION IX FAULT DIAGNOSIS
Gearbox
Difficulty in selecting and deselecting gears
–
Check selection mechanism for wear:
•
Adjust or replace worn parts (operation to be carried out at a spe-
cialised service centre).
Gears disengage during work
–
Check that the gear lever travel is sufficient to engage the gear:
•
Adjust gear lever travel (operation to be carried out by a special-
ised service centre).
–
Check gears for wear:
•
Replace worn parts (operation to be carried out by a specialised
service centre).
Noisy gearbox
–
Check level and type of oil:
•
Top up or change oil for recommended type.
–
Check gear teeth and bearings for excessive wear:
• Replace worn parts (operation to be carried out by a specialised
service centre).
–
Check backlash between crown wheel and pinion:
•
Adjust backlash (operation to be carried out by a specialised ser-
vice centre).
Oil leaks
–
Check that oil level is not too high:
•
Restore correct level.
–
Check that the breather valve is not blocked:
•
Clean or replace as necessary.
–
Check the oil seals for wear:
•
Replace (operation to be carried out at a specialised service cen-
tre).
–
Check gaskets:
•
Replace (operation to be carried out at a specialised service cen-
tre).
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