CLEANING - TM-10-3930-638-24-P0721

TM 10-3930-638-24&P

3-30. HYDRAULIC LIFT SYSTEM MAINTENANCE (cont)

a. Control Valve (cont).

REMARKS

ITEM

ACTION

LOCATION

STEP

CLEANING

WARNING

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.

Use cleaning solvent P-D-680. Dry

Clean

All parts

thoroughly. Be sure that bores in

housings are thoroughly clean

INSPECTION/REPAIR

Replace if distorted, cracked or fatigue

Inspect

Springs

signs are evident

Replace if finish is damaged or if bent

Inspect

spools

or damaged

Replace if threads damaged in any way,

Inspect

Screws and plugs

or corroded.

Replace if bores damaged, cracked, internal

Inspect

Housings

threads damaged, or internal wear is

evident

Replace if damaged, cracked, or distorted

Inspect

All other parts

LEFT COVER PLATE REASSEMBLY

NOTE

Lubricate all O-rings before reassembly with clean hydraulic oil

(refer to current lubrication order).

On plug (6)

Install

a. O-ring (5)

Relief plug (6)

Install

b. Back-up washer (4)

Install

c. O-ring (3)

Install

d. Back-up washer (2)

3-213