Specifications

Vehicle System Testing & Adjusting 67
2. Make sure stationary mast upper bearings are
properly shimmed by rolling up and down and
moving intermediate mast to right and left. If
clearance between both masts can be detected,
pull out the intermediate mast from the stationary
mast with crane and add shim 0.5 mm or 1 mm
to both stationary upper bearings.
3. In case of standard and full free mast, stationary
upper bearings can be easily extruded by pulling
down the inner mast from the bottom of
stationary mast. If outer intermediate mast is
stuck and cannot move by rolling up and down,
there might be excessive shims. Pull out the
outer intermediate mast from the stationary mast
and remove shim 0.5 mm to both stationary
upper bearings. Repeat same procedure of
above until properly shimmed. There is to be
contact zero clearance (G) between stationary
upper bearings and the widest point of
intermediate mast to be checked before.
C. Upper Pad Adjustment
Mast Adjustment Upper Bearings
(E, F, G) Zero clearance.
(H) 0.80 mm (.031 in) Clearance maximum.
(9) Pads. (10) Shims. (11, 12, 13) Shims.
1. Install shims (10) behind each pad (9) until there
is 0.80 mm (.031 in) maximum clearance (H)
between the pads and the inner and intermediate
masts with the masts at full extension. Lift by
crane, and pull out intermediate mast from
stationary mast and insert the shims behind each
pad. In case of standard and full free mast, the
pads of stationary upper can be easily extruded
by pulling down the inner mast from the bottom
of stationary mast.