Rotation Cylinder Assembly. - TM-10-3930-638-24-P0740

TM 10-3930-638-24&P

3-30. HYDRAULIC LIFT SYSTEM MAINTENANCE (cont)

d. Rotation Cylinder Assembly.

e. Reassembly

a. Removal

This task covers:

f. Testing

b. Disassembly

g. Installation/Replacement

c. Cleaning

d. Inspection/Repair

INITIAL SETUP

EQUIPMENT CONDITION

TOOLS

Paragraph

Condition Description

NSN 4910-00-754-0654

No. 1 Common Organiza-

Vehicle parked on level surface, engine

tional Maintenance Tool Kit

off, parking brake applied, mast vertical,

Chain Hoist, 1/2 ton capacity

and forks resting on ground.

Sleeve, 1-5/8 inches diameter

Control valve control levers operated

Hydraulic Pump (used for testing)

several times to relieve hydraulic pressure

MATERLALS/PARTS

Cleaning solvent P-D-680

Clean cloths

Seal repair kit

Clean hydraulic oil (refer to current lubrication order)

Medium grit emery cloth

REMARKS

ACTION

ITEM

STEP

LOCATION

WARNING

REMOVAL

Dry cleaning solvent (P-D-680), used to clean parts is toxic and

flammable. Wear protective goggles and gloves and use only in a

well ventilated area. Avoid contact with skin, eyes, and clothes

and don't breathe vapors. Do not use near open flame or exces-

sive heat and don't smoke when using it. Failure to do so could

cause serious injury. If you become dizzy while using cleaning

solvent, get fresh air immediately, and get medical attention. If

contact with skin or clothes is made, flush with large amounts of

water. If contact with eyes is made, wash eyes with water immedi-

ately, and obtain medical aid immediately.

Clean, loosen,

Use cleaning solvent P-D-680

Mast assembly,

a. Hose fitting

rear

disconnect and

(1 and 2)

cap

Remove

b. 90 degree elbow

(3)

c. 45 degree fitting (4)

Remove

Plug rotation cylinder assembly ports

d. Two 90 degree

Remove

fittings (5)

Remove

e. Two retaining rings

(6) and spacers (7)

f. Rotation cylinder

Remove to clean

work area

assembly (8)

3-232