DISASSEMBLY. - TM-10-3930-623-340034

TM 10-3930-623-34

4-26. HOIST CYLINDER ASSEMBLY.

5. With front wheels removed, or truck front

blocked up for access, remove the two capscrews and

4-27. REMOVAL. Remove hoist cylinder in accordance

lock washers at each bearing cap (see figure 4-1) and

with paragraph 4-23 step 2.

remove caps and bearing inserts. Remove assembly

from truck.

4-28. DISASSEMBLY.

WARNING

1. Clamp hoist cylinder in vise equipped with V-

If front of truck is to be raised,

shaped jaws.

Remove screws (1, figure 4-4) and

support it at both sides. The truck is

washers (2). Unscrew packing nut (6) from plunger (28).

not stable when resting on only the

Remove wiper ring (7), packing retainer (8) and five

rear axle, and could fall from a single

packings (9).

supporting point at the front, with

Unscrew packing nut (11) from cylinder (21).

resulting danger to personnel and

Remove ring (12) and retainer (13) and five packings

equipment. Do not jack up truck by

(14).

using upright assembly as a

3. Slide plunger (28) from cylinder and remove

supporting point.

guide (26), retaining ring (27) and bearings (10 and 15).

Unscrew packing nut (16) from cylinder (22).

4-23. DISASSEMBLY.

Remove ring (17) and retainer (18) and five packings

(19). Remove bearing (20) from cylinder. Slide cylinder

1. Slide backrest (1, figure 4-3) from carriage (56)

from plunger (29).

and lift from truck. Remove forks (2) from truck.

5. Remove packing (23) and washer (24) from

2. Unscrew four nuts (20 and 21) and remove

cylinder. Unscrew cylinder end (3) and remove packing

anchor screws (19) from hoist cylinder (35) and two

(4) and ring (5 ) and plunger (29). Remove two bearings

chains (22). Remove nut (29) and washer (30) attaching

(25).

hoist cylinder to inner upright (42). Slide inner upright up

and brace in position. Lift hoist cylinder from truck.

4-29. TILT CYLINDER ASSEMBLY.

3. Remove cylinder adapter (36) from bottom of

4-30. REMOVAL. Refer to TM 10-3930-623-12.

outer upright (43). Remove the crosshead (34). To

disassemble crosshead, remove two retaining rings (23)

and washers (24). This releases bearings (26) and

rollers (25).

4. Slide four roller assemblies from carriage (56).

Remove rollers (54) and bearings (55).

Remove

4-31. DISASSEMBLY.

carriage.

5. Remove screws (17) and nuts (18) attaching

1. Remove nut (3, figure 4-5), lock washer (4) and

latch assembly (7 through 16) to outer upright (43 ) ;

screw (2) clamping rod end (1) to piston and rod (16).

remove latch.

Unscrew rod end.

6. Slide inner upright (42) up and out of outer

2. Remove screw, washer and packing gland (6, 7

upright (43).

and 5). Remove wiper ring (8) and packing (9). Discard

all packing. Unscrew stuffing box (10) from cylinder

(17).

4-24. HYDRAULIC SYSTEM.

3. Remove packings (13) and backup ring (12).

4. Remove piston and rod (16), and packings (14

4-25. The hydraulic system is not subject to complete

and 15).

periodic overhaul.

Rather, components are to be

serviced as necessary. Disassemble hydraulic units

4-32. CONTROL VALVE.

only in a clean area maintained for that purpose. Save

all serviceable fittings and attaching parts for reuse at

4-33. REMOVAL.

assembly.

Discard all nonmetallic parts, such as

Refer to TM 10-3930-623-12.

packings and gaskets, removed at disassembly.

However, do not take a unit apart further than necessary

for the sole purpose of removing such parts.

4-4