Daewoo B20S-2 Disassembly/Assembly page 23

D. Lower Bearing Adjustment of Inner
Mast
3
B
IDCS123S
Mast Adjustment Lower Bearings
(A) Zero clearance. (B) Minimum clearance. (C) Zero clearance.
(3) Bearing. (4) Bearing. (5) Shims. (6) Shims.
13. Select lower bearings (3) and (4) from the chart
to obtain minimum clearance (B) between
bearing and channel leg for full channel length.
Must use same bearing on left and right side.
Mast And Carriage Bearings
Part No. Bearing Size
D581814 Under size
D581815 Standard
D581816 Over size
* Permissible tolerance L 0.08mm (.003in)
Vehicle Systems
4 5
Bearing O.D.*
108.6 mm (4.276 in)
109.6 mm (4.135 in)
110.7 mm (4.358 in)
6
IDCD040P
14. Find narrowest point by ruler on the intermediate
mast in the area where the inner lower bearings
make contact full length of intermediate mast
A
excluding minimum channel lap 475 mm (18.7 in).
C
IDCD031P
15. Install 1 mm shim to each bearing of inner lower
and intermediate upper basically. Lifting by
crane, insert inner mast into intermediate mast
from the upper side.
22 Disassembly & Assembly