300Tdi Discovery
37
MANUAL GEARBOX
2
FAULT DIAGNOSIS
Symptom - Noise from gearbox in neutral, which
disappears when clutch is depressed.
1. Check lubricant specification and level, if low do
not top up at this stage.
2. Drain lubricant and check for contamination or
metal particles.
Suspect worn bearings on layshaft, primary shaft
or front of main shaft. See remove and overhaul
procedure.
Symptom - Noise from gearbox in one or more
gears when being driven.
1. Check lubricant specification and level, if low do
not top up at this stage.
2. Drain lubricant and check for contamination or
metal particles.
Suspect worn roller bearings on particular
mainshaft gears. See remove and overhaul
procedure.
