Rear Propeller (Drive) Shaft
The rear suspension geometry to the 90 Series Land
Cruiser Prado is excellent in standard form, however when
modifying the suspension for additional suspension lift and
travel, care needs to be taken to avoid the rear propeller shaft
from contacting the fuel tank guard plate.
As the suspension compresses, the whole axle
assembly moves towards the left of the car in an arc described by
the lateral control arm (superimposed in the picture above). In
addition, if the right hand side wheel moves down, the axle
assembly moves even further to the left.
The amount of movement is startling. Even with
seemingly adequate clearance between the differential/propeller
shaft and the fuel tank guard plate, the axle assembly will
contact the guard and on some cases break the rear grease nipple
off the prop shaft.
Minor contact shown above. Keep an eye on this area if
you run enhanced rear suspension on the Prado.
Certainly a worse case than that shown above. The grease
nipple had broken off (now replaced) and the guard showing signs of
repeated abuse, with the rear section torn.
Other areas of the propeller shaft showing signs of contact.
If the contact is minor, it may be
possible to rectify fairly easily. By undoing the tank, and
bash plate and levering them over away from the propeller shaft,
and slotting a couple of holes, adequate clearance may be