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 200 of 524

TM 5-2330-378-14&P

4-62.

AIRBRAKECHAMBERREPLACEMENT(continued).

3.

Place a square (orequivalent

object) so one edge is parallel with brake chamberpush

rod (10) and the other

edge is against camshaft (11).

4.

Measure the distance from end of push rod (10) to vertical edge of square.

5.

If measurement

is less than 211he inches

2

9

SQUARE

(6.83 cm) for the M870, or less than 115/,6

inches (4.92 cm) forthe M870AII, push rod

(10) must be shortened (steps 6 and 7). If

measurement

is greater than

325/32

inches

(9.6 cm) for the M870, or 311/isinches (110

cm) for the M870A1, push rod (10) is too

10

short;

replace airbrake chamber (2) by

SLACK ADJ

T R

V

following steps 1 through 4.

OMITTED

7

NOTE

CLARITY

110,

If push rod is the correct length, proceed to step 9.

6.

Mark where push rod (10) is to be cut, and remove airbrake chamber (2) from axle mounting bracket (9).

7.

Cut push rod (10) at the mark, and reinstall airbrake chamber (2) on axle mounting bracket (9).

8.

Tighten two nuts (7) to required torque (see Appendix H).

9.

Instalijamnut (4) approximately 15/ieinches (3.3 cm)from threaded end of push rod (10).

10.

Install clevis adapter (5) approxi-

(3.3 cm)'

10

1-5/16 in

V4

mately Ya inch (9.5 cm) from

FORWARD

threaded end of push rod (10).

11.

Turn adjusting hex (12)

12

clockwise

until clevis

0

adapter (5) extends into

clevis (6) approximatelyl

/8

318 in.

4

inch (0.3 cm).

Thread

clevis adapter(5) into clevis

(9.5 cm)

TURN

(6) until snug.

5

CLOCKWISE

4

10

4

6

10

4

6

\0 0

0 0

4-112