TM-9-2320-285-24-2

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-9-2320-285-24-2 - Page 203 of 698

TM 9-2320-285-24-2

3-24.

BRAKE CONTROLS MAINTENANCE (CONT)

g.

Relay Valve (cont).

STEP

LOCATION

ITEM

ACTION

REMARKS

DISASSEMBLY (cont)

2

NOTE

(cont)

Scribe or otherwise match mark cover (11) and body (28)

to aid in

reassembly.

e

Capscrews (9

Remove

and 10)

f

Cover (11)

Remove

Tap gently and separate from

body (28)

g

O-ring (12)

Remove and

discard

h

Piston (13)

Remove

i

Seat (14)

Remove

j

Sealing ring

Remove and

(15)

discard

k

Screw (16) and

Remove

washer (17)

l.

Diaphragm (18)

Remove and

discard

m

Four screws (19) Remove

Support cover (20)

n

Cover (20)

Remove

NOTE

Discard items 21 thru 27 in the following steps.

New items 21 thru 27

are included in the relay valve maintenance kit.

o

Retaining ring

Remove

Use retaining ring pliers

(21)

p

O-ring (22)

Remove

q

Washer (23)

Remove

r

Retainer (24)

Remove

s

Spring (25)

Remove

t

Valve (26)

Remove

u

Retainer (27)

Remove

3-197