LIFT CHAINS - TM-10-3930-623-120088

TM 10-3930-623-12

more than the other. Install pins and lock screws, and

6-33. DELETED

free mast from tie-down arrangement.

3. If one plunger yoke extends more than the other

one, so that tilting to either extreme of travel would twist

the uprights, loosen clamp bolt on one plunger yoke and

screw yoke in or out on shaft threads as necessary to

equalize the extension of both shafts.

CAUTION

Pad jaws of wrench used to hold

plunger shaft so plated surface will

6-34. SPOTLIGHT.

not be damaged.

6-35. REMOVAL. Disconnect electrical cables from

spotlight.

Remove two nuts, bolts and washers

6-28. LIFT CHAINS.

attaching spotlight to left side of uprights. Remove

6-29. REMOVAL. Lower carriage onto supporting

spotlight.

blocks to relieve the weight on the chains

(see figure 1-10).

With upright carriage and fork

6-36. INSTALLATION. Mount spotlight in position on

assembly completely bottomed, release chains at

bracket welded to upright and fasten in place with two

hydraulic hoist cylinder by removing two adjusting

bolts, washers and nuts. Reconnect electrical wiring.

screws and four nuts. Unhook chains at lift carriage

assembly and pull free of unit.

6-37. THRU 6-42 DELETED

6-30. INSTALLATION. Feed chains over rollers of

crosshead assembly, and hook in position in carriage

assembly. Install adjusting screws through chain ends

into hydraulic hoist assembly and install four nuts.

Relubricate chain (see LO 10-3930-623-12).

Adjust chains as follows:

1. Lower carriage until hoist cylinder bottoms.

2. Adjust chain adjusting nuts until slack

6-43. CONTROL VALVE.

removed from both chains and chains are taut.

6-44. REMOVAL.

3. Be certain load is shared equally by both chains.

1. Disconnect and tag each hose to the control

6-31. DELETED

valve (see figure 6-2). Cap or plug hoses to keep out

dirt.

6-32. DELETED

2. Remove three nuts, lock washers and through

bolts which attach valve to mounting bracket.

3. Raise valve and return line high enough to

permit turning valve, and unscrew it from return line pipe

to remove valve from truck.

4. If returning valve for exchange, strip valve of al

fittings and save them for reuse on installation of new

valve.

6-5