Range Rover Classic
41
TRANSFER GEARBOX
18
OVERHAUL
6. Clean the sleeve and place to one side.
7. Drive or press the output shaft from the housing.
8. Clean and examine the splines and
speedometer drive gear for wear or damage.
The output shaft can be further dismantled if
either the speedometer drive gear or output shaft
is worn: remove the circlip and slide the gear
from the shaft, retrieve the ball bearing from the
indent in the shaft. Discard the worn component.
NOTE: While the output shaft is removed
from the rear output housing, the shaft can
be utilised for checking the rolling
resistance of the viscous unit as follows.
Viscous unit - rolling resistance
Bench check
NOTE: Testing should be carried out in an
ambient of 20 ˚C.
9. Secure the output shaft in a vice fitted with soft
jaws, gripping the shaft on the drive flange
splines.
10. With the viscous unit still installed in the front
output housing place the assembly on the rear
output shaft spline.
11. Apply a clockwise torque of
27 Nm to output
flange nut. If no resistance to turn is felt, unit
requires replacing.
12. If resistance to turn is felt, apply a clockwise
torque of
20Nm, to output flange nut for 1
minute, this should result in a rotation of
approximately 25˚ - 30˚. If no rotation or a
greater force is required, unit requires replacing.