UPRIGHTS, CARRIAGE AND FORK ASSEMBLY

TM 10-3930-623-34

6. Carefully slide secondary plunger and cylinder

10. Assemble roller chain (22) to carriage and to

assembly-into primary plunger from bottom.

adjusting screws (19) passing over rollers (25).

7. Install bearing (10), preform packing rings (9)

11. Assemble latch assembly (7 through 16) to

and retainer (8) m upper recess of primary plunger (28).

upright.

See note in step 4. Press wiper ring (7) into packing nut

(6). Clean end of secondary cylinder and install packing

12. Install all lubrication fittings.

Adjust chains,

nut into primary plunger.

carriage and uprights for clearance.

8. Assemble preform packing (23) and backup ring

6-105.

UPRIGHT,

CARRIAGE

AND

FORK

(24) to lower end of secondary cylinder (22). See note

The uprights are provided with

ADJUSTMENTS.

step 4.

several adjusting setscrews (41, figure 4-3) and the

carriage with setscrews (49) to insure free movement of

9. Slide secondary cylinder assembly into lower

the inner and outer uprights and carriage. Adjust as

end o1 the primary cylinder (21). Use spanner wrench

follows:

and thread built up assembly into primary cylinder.

1. Adjust carriage roller thrust screw (50) to level

carriage (56) with mast and upright assembly. Tighten

10. Install bearing (15), preform packing rings (14)

screws until all side play is removed. Install lock

and retainer (13) into upper end recess of the primary

setscrew (49).

cylinder (21). See step 4 note. Install packing nut (11).

2. Adjust chain tension by tightening nuts (20) on

11. Clean upper end of primary plunger (28) and

hoist cylinder chain anchor screws (19). Tighten until all

press wiper ring (12) into nut (11).

slack is removed from both chains (22) without lifting

carriage. Hold nut (20) and tighten jam nut (21).

12. Loosely install air vent screw (I) and washer (2)

in the primary cylinder (21). See note in step 3.

3. Mast setscrews Q4l

are adjusted after

installation and with hydraulic system in operation.

Raise carriage and forks to full height and tilted fully

6-104.

UPRIGHTS,

CARRIAGE

AND

FORK

forward. Adjust setscrews in inner and outer uprights

ASSEMBLY.

(42 and 43) to zero clearance.

1. Slide inner upright (42, figure 4-3) into outer

upright (43).

6-106.

UPRIGHT,

CARRIAGE

AND

FORK

INSTALLATION.

2. Assemble four carriage rollers (54) and bearings

(55) to carriage (56). Assemble carriage side thrust

1. Install bearing half (38, figure 4-3) in upright

bracket (46' and rollers (45) to carriage with screws (47)

bracket. Press pins (39) through bearings and into

and washers (48).

bracket. Peen end of pin below surface of bearing.

3. Assemble carriage striker block (51) to carriage

2. Install bearings in bearing caps.

See step 1

with screws (52) and washers (53).

above.

4. Loosely install

carriage

slide

thrust

roller

3. Install regulator valve (4) and related fittings in

adjustment screw (49).

hoist cylinder (35).

5. Assemble carriage assembly to inner and outer

4. Using hoist, lift upright assembly onto truck front

uprights. Stand mast in upright position.

axle. Install bearing caps.

6. Assemble roller crosshead (34) to hoist cylinder

5. Connect tilt cylinder to upright by pins and

(35).

retaining plates.

7. Install hoist cylinder (35) and adapter ring.(36) it

6. Install forks (2) and backrest (1).

outer upright. Attach cylinder brace (28) to inner upright

and to mast cylinder with nut (29) and washer (30).

6-107. TILT CYLINDER ASSEMBLY.

8. Assemble washer (27), roller (25) and roller

NOTE

bearing (24) to crosshead. Install retaining washer (24)

Wipe clean inner cylinder walls and

and retaining rings (23).

wet all interior parts with OE-10

engine oil during assembly.

9. Assemble roller chain adjusting screws (19) to

mast cylinder with nuts (20) and jam nuts (21).

1. Assemble nylon piston guid e ring (15, figure 4-5)

and two packing rings (14) on tilt cylinder piston (16).

Carefully compress packing rings and slide piston into

NOTE

cylinder (17).

Leave full length of adjustment until

chain is installed.

6-26