300Tdi Discovery
44
AUTOMATIC GEARBOX
14
REPAIR
EXTENSION HOUSING
Service repair no - 44.20.18
Remove
1. Remove transfer gearbox.
See TRANSFER
GEARBOX, Repair, LT230T Transfer Gearbox
2. Drain oil from automatic gearbox.
3. Remove bolts securing left hand mounting
bracket to extension housing and withdraw
bracket.
4. Remove transfer gear lever housing securing
bolts and move housing aside.
5. Remove securing bolts and withdraw extension
housing from over coupling shaft. Remove and
discard gasket.
6. Place extension housing on bench and remove
oil seal.
7. Ensure that all surfaces are clean and housing is
free from damage. If damage is found and
housing has to be renewed remove dowels from
face of existing housing and fit to new housing.
8. Using special tool LST108 fit new oil seal to
housing.
Refit
9. Fit extension housing to gearbox, with a new
gasket, ensuring oil seal is not damaged by
extension shaft.
10. Secure housing with nine bolts. Tighten to
23
Nm.
11. Refit transfer gear lever housing to top of
extension housing. Tighten to
25 Nm.
12. Refit mounting bracket to extension housing.
Tighten to
52 Nm.
13. Refit transfer gear box.
See TRANSFER
GEARBOX, Repair, LT230T Transfer Gearbox
14. Refill automatic gearbox lubrication system with
correct grade of oil.
See LUBRICANTS,
FLUIDS AND CAPACITIES, Information,
Recommended Lubricants and Fluids
