CLEANING (cont) - TM-9-2320-285-24-20444

TM 9-2320-285-24-2

3-42.

FIFTH WHEEL HYDRAULIC SYSTEM MAINTENANCE (CONT)

c. Hydraulic Control Valve (cont).

STEP

LOCATION

ITEM

ACTION

REMARKS

CLEANING (cont)

WARNING

(cont)

Compressed air must not exceed 30 psi. Wear safety glasses when drying parts with compressed air.

Failure to do so could cause serious injury to eyes and possible blindness. If you hurt your eyes or if a

foreign object is blown into your eyes, seek medical attention immediately.

All other parts

Clean

Use cleaning solvent P-D-68 0;

dry with compressed air

INSPECTION

Metering spool

Inspect

Replace hydraulic control

(19)

valve if metering spool is

cracked, broken, burred, or

does not slide easily in

bore of housing (37)

Housing (37)

Inspect

Replace hydraulic control

valve if housing is crack-

ed, broken, burred, or does

not easily accept metering

spool (19)

Springs (16 and

Inspect

Replace if cracked, broken,

32)

distorted, or permanently

set

All other parts

Inspect

Replace if cracked, broken,

distorted, or threads

damaged

REASSEMBLY

NOTE

Immerse all inner control valve parts in clean hydraulic oil to provide initial lubrication.

Inner parts

All inner parts

Lubricate

Immerse in clean hydraulic

(13 thru 36)

oil

3-438