Specifications

Vehicle System Disassembly & Assembly 26

Assemble FFT Mast

NOTE: The standard, Full Free Lift and Full Free

Triple Lift mast load bearings are all adjusted the

same way. The mast shown in the following

illustrations is the Full Free Triple Lift mast. Also, the

actual appearance would be different partially

1. Make sure all parts are clean and free of dirt and

foreign material.

2. Check all parts for damage, use new parts for

replacement.

A. Lower Bearing Adjustment of Intermediate Mast

Mast Adjustment Lower Bearings

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

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

3. 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

Bearing O.D. *

D581814 Under Size 108.6 mm (4.276 in)

D581815 Standard 109.6 mm (4.276 in)

D581816 Over Size 110.7 mm (4.358 in)

* Permissible tolerance ± 0.08 mm (.003 in)

4. Find narrowest point by ruler on the staionary mast

in the area where the bearings make contact at 475

mm (18.7 in) channel lap.

NOTE: When installing shims (2) behind bearings (1),

make sure the amount of shim is divided equally when

positioned behind each bearing (1).

5. Install the correct amount of shim (2) behind rollers

until contact (zero clearance) is made between the

rollers.

IDCS123S

4 5 6

IDCD036P