Vehicle System Testing and Adjusting 58
Mast Adjustment Lower Bearings
(A) Zero Clearance. (B) Minimum Clearance. (C) Zero clearance.
(3) Bearing. (4) Bearing. (5) Shims. (6) Shims.
4. Make sure inner mast lower bearings are properly
shimmed in the intermediate mast by rolling up
and down and moving inner mast to right and left.
If clearance between both masts can be detected,
pull down the inner mast from the bottom of
intermediate mast. Inner lower bearings can be
easily extruded. Add shim 0.5 mm or 1 mm to
both inner lower bearings. If inner mast is stuck
and cannot move by rolling up and down, there
might be excessive shim. Pull out the inner mast
from the intermediate mast and remove shim 0.5
mm to both inner lower bearings. Repeat same
procedure of above until properly shimmed. There
is to be contact zero clearance (C) between inner
lower bearings and intermediate channel at
narrowest point.
E. Upper Bearing Adjustment of intermediate
Mast
Follow same procedure with above B.
F. Upper Pad Adjustment of Intermediate Mast
Follow same procedure with above C.
Carriage Adjustment
NOTE : The standard, Full Free Lift and Full Free
Triple Lift carriage load bearings are all adjusted the
same way. The Full Free Triple Lift carriage is
shown in the following illustrations.
To make the carriage clearance adjustments,
carriage must be removed from the mast.
Use the procedure that follows to adjust carriage
load bearings.
Carriage Adjustment
(3) Upper Bearings. (4) Shims. (5) Bolt. (6) Screw. (7) Middle
Bearings. (8) Lower Bearings. (A) Zero Clearance. (B) 6.0 to
9.0 mm. (.236 to .354 in) Clearance. (C) Minimum Clearance.
1. Select lower bearings from the chart to obtain
minimum clearance (B) between bearings and
channel leg for full channel length. Use same
bearing in all six locations.
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