Discovery II
REAR AXLE
51-12
OVERHAUL
Inspect
1. Clean and inspect all components for wear and
damage.
2. Fit planet gears and rotate to align cross shaft
holes.
3. Fit cross shaft, ensure roll pin hole is aligned.
4. Secure cross shaft with new roll pin.
5. Fit crown wheel to carrier, fit new bolts and
tighten to 60 Nm (44 lbf.ft).
6. Ensure original head bearing shim is clean and
free from burrs and fit under bearing race.
7. Ensure pinion bearing cup recesses are clean
and free of burrs and using LRT-51-018-4 fit
pinion head and tail bearing races.
8. Fit pinion head bearing to pinion.
9. Lubricate bearings with thin oil.
10. Ensure original tail bearing shim is clean and
free from burrs and fit under bearing race.
11. Fit pinion and pinion tail bearing.
12. Fit pinion flange, washer and bolt.
13. Use LRT-51-003 to restrain pinion flange.
14. Tighten pinion flange bolt to 100 Nm (74 lbf.ft).
15. Check pinion for end float. Should read zero.
16. Rotate pinion several times to settle bearings,
check pinion Torque to Turn. Torque to Turn
should be recorded during pinion rotation.
Pinion Torque to Turn should be 4 to 6 Nm (3 to
4.5 lbf.ft).
17. Adjust size of tail bearing shim to obtain correct
pinion Torque to Turn (0.025 mm = 1 Nm
(0.001' = 0.7 lbf.ft) approximately).
18. Position LRT-51-018-7 on surface plate,
establish zero and reference DTI.
19. Ensure pinion height setting block, setting
gauge and mating faces are clean and free
from burrs.
20. Locate setting block LRT-51-018/11 over
pinion head, ensure it is fully seated in position.
