DISASSEMBLY (cont) - TM-9-2320-285-24-20443

TM 9-2320-285-24-2

3-42.

FIFTH WHEEL HYDRAULIC SYSTEM MAINTENANCE (CONT)

c. Hydraulic Control Valve (cont).

STEP

LOCATION

ITEM

ACTION

REMARKS

DISASSEMBLY (cont)

Check plug

Remove

Discard O-ring (22)

(cont)

(21), O-ring

(22), and

check poppet

(23)

m. Acorn nut (24)

Remove

and jam nut

(25)

n. Adjusting screw

Remove

(26)

o. Washer (27) and

Remove and

O-ring (28)

discard

p. Body (29)

Remove

q. Ball (30),

Remove

spring guide

(31), and

relief spring

(32)

r. Gasket (33)

Remove and

discard

s. Seat (34),

Remove

Discard O-ring (35)

O-ring (35),

and poppet

(36)

CLEANING

Rubber bonnet

Clean

Wipe with clean cloth moist-

(10)

ened with water only. Dry

thoroughly with clean cloth

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 excessive 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 and medical

attention immediately. If contact with skin or clothes is made, flush with large amounts of water. If contact

with eyes is made, wash eyes with water and seek medical aid immediately.

3-437