Specifications

Vehicle System Testing & Adjusting 63

D. Lower Bearing Adjustment of Inner Mast

Mast Adjustment Lower Bearings

(A) Zero Clearance. (B) Minimum Clearance. (C) Zero

Clearance. (3) Bearing. (4) Bearing. (5) Shims. (6) Shims.

1. Select lower bearings (3) and (4) from the chart

to obtain minimum clearance (B) between

bearing and channel leg for full channel length.

Use same bearing on left and right side.

Mast And Carriage Bearings

Part No. Bearing Size Bearing O.D.*

D581814 Under Size 108.6 mm(4.276 in)

D581815 Standard 109.6 mm(4.135 in)

D581816 Over Size 110.7 mm(4.358 in)

* Permissible tolerance ± 0.08mm (.003in)

2. Find narrowest point by ruler on the intermediate

mast in the area where the inner lower bearings

make contact full length of intermediate mast

excluding minimum channel lap 475 mm (18.7 in).

3. Install 1 mm shim to each bearing of inner lower

and intermediate upper basically. Lift by crane,

insert inner mast into intermediate mast from the

upper side.

IDCS123S