TM-9-2320-285-24-1

TRUCK TRACTOR, YARD TYPE, 43,500 LB GVW, DED, 4X2, ARMY MODEL M878A1

TECHNICAL MANUAL; ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL

OCTOBER 1985

TM-9-2320-285-24-1 - Page 902 of 987

TM 9-2320-285-24-1

2-78.

FIFTH WHEEL HYDRAULIC SYSTEM MAINTENANCE (CONT)

b.

Hydraulic Filters and Lines and Fittings (cont).

(1) Hydraulic Filters (cont).

STEP

LOCATION

ITEM

ACTION

REMARKS

DISASSEMBLY

6

Spring

Spring replacement

Fabricate, if

Cut a section of 3/4-inch

replacement

tool

necessary

O.D., 5/8-inch I.D.

elec-

tool

tric conduit 3 inches long.

Cut two notches, 1/8-inch

wide by 1/8-inch deep in

one end of conduit as shown

7

Return line

a.

Relief valve

Secure

Insert allen wrench into out-

filter head

poppet

let port of filter head and

into relief valve poppet to

hold poppet in place

b.

Spring replace-

Insert

Into inlet port of filter

ment tool

head

c.

Spring

a.

Hold

Use notches of spring

replacement tool to secure

spring

b.

Depress

Turn clockwise

and turn

d.

Spring replace- Remove

ment tool

e.

Spring and

Remove

From return line filter head

relief valve

poppet

2-879