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 116 of 524

TM 5-2330-378-14&P

4-16. TROUBLESHOOTINGCHART(continued).

b.

BRAKES

(1) BRAKES DO NOT APPLY (continued).

CONTINUED

FROM STEP B

D.

Check emergency

relay valve (refer to brake

system schematic, Appendix K) for damage or

leaks by listening for hissing sound orby using a

mild soap solution and watching for bubbles.

Is emergency

relay valve damaged or leaking?

Replace emergency relay valve (para4-58

or4

59). Verify problem is solved.

E.

Check emergency

and service hoses and fittings

from gladhands to air reservoir for damage or

leaks by listening for hissing sound or by using

mild soap solution and watching

for bubbles.

Are any hoses and/or fiffings damaged or leakingl

-1*--]

Repair or replace hoses (para 4-51).

Verify

problem

is solved.

F. Have assistant apply brakes in towing vehicle.

Check slack adjusters and S-camshafts fordam-

age.

Are any slack adjusters or S-camshafts

damaged?

`q@

1. Replace damaged slack adjusters (para 4-48).

2. Notify Direct Support

maintenance

about

damaged S-camshafts.

Verify problem is solved.

continued

on next page

4-28