TM-5-2330-378-14-P

SEMITRAILER, LOWBED: 40 TON CONSTRUCTION EQUIPMENT TRANSPORTER M870 AND M870A1

TECHNICAL MANUAL; OPERATOR'S, UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)

JUNE 1999

TM-5-2330-378-14-P - Page 199 of 524

TM 5-2330-378-14&P

4-62. AIRBRAKE CHAMBERREPLACEMENT.

ThisTaskCovers:

a.

Removal

b.

Installation

Initial Setup:

Tools/Test Equipment:

- Lockwasher (M870A1) (2) (item 15, Appendix 1)

- Tool kit, general mechanic's: automotive

(item 7, Appendix B)

Equipment Conditions:

- Drain cock open on rear air reservoir (para 3-8).

Materials/Parts:

- Planks removed from stowed position (M870)

• Tape, antiseizing (item 21, Appendix F)

(para 2-8).

• Lockwasher (M870) (2)

(item

9, Appendix 1)

a.

REMOVAL

NOTE

Two airbrake chambers located on rearaxleof

semitrailer provide airto service brakes.

This procedure

is for replacement

of one airbrake chamber;

repeatthe

procedure for

the other airbrake chamber.

1.

Tag air hose (1) to air brake chamber (2). Disconnect air hose (1) from elbow (3).

2.

Loosen and position jamnut (4) approximately

one inch (2.5 cm) from clevis adapter

3.

Unscrew clevis adapter(5) from

1

clevis (6).

3

4.

Remove two mounting nuts (7) and

lockwashers (8)frorn airbrake cham-

6

ber (2) and axle mounting bracket

4

(9). Discard lockwashers.

2

5.

Remove airbrake chamber (2) from

axle mounting bracket (9).

6.

Removeelbow(3)

and clevis adapter

5

(5) from ai rbrake chamber (2).

b.

INSTALLATION

NOTE

9

Wrap threaded ends of

all

brass fittings with two turns of

antiseizing

tape.

1

Install elbow (3) on airbrake cham-

ber(2).

2.

Install airbrake chamber(2)

on axle

mounting bracket(9) usingtwo new

lockwashers (8) and nuts (7). Hand-

7

tighten nuts (7).

4-111