Vehicle System Testing and Adjusting 55
5. In case of standard and full free mast, inner lower
bearings can be easily extruded by pulling down
the inner mast from the bottom of stationary mast.
If intermediate mast is stuck and cannot move by
rolling up and down, there might be excessive
shims. Pull out the intermediate mast from the
stationary mast and remove shim 0.5 mm to both
intermediate lower bearings. Repeat same
procedure of above until properly shimmed. There
is to be contact zero clearance (C) between
intermediate lower bearings and stationary
channel at approximately 475 mm (18.7 in)
channel lap.
B. Upper Bearing Adjustment of Stationary Mast
1. Lift by crane, and pull out intermediate mast from
stationary mast. Install 1 mm shim to each bearing
of stationary mast upper. Bearing should be part
number D581814 under size bearing.
Mast Adjustment Upper Bearings
(D) Zero clearance. (E) 0.80 mm (.031 in) Clearance maximum.
(F) Zero clearance. (7) Pads. (8) Shims. (9) Shims. (10) Shims.
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