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 124 of 524

TM 5-2330-378-14&P

4-16. TROUBLESHOOTING CHART (continued).

b. BRAKES (continued)

(4)

BRAKES ARE SLOW TO APPLY OR RELEASE.

Initial Setup:

Tools/Test

Equipment:

- Parking brake applied (see operators

manual for

-Tool kit, general mechanic's:

automotive

towing vehicle).

(item 7, Appendix B)

- Wheels chocked (para 2-10).

Equipment Conditions:

-Semitrailer

coupled to towing vehicle. Engineoff

(see operator's manual for towing vehicle).

A.

Check for low air pressure indication on air

pressure gage in towing vehicle. Checkairlines

and connectors

for restrictions.

Does air pressure gage in towing vehicle indicate low

air pressure?

1. Tighten connections.

2. Remove any restrictions

from hoses.

3. Repairor replace air hoses and connectors as

necessary (para4-51).

4. Verify problem is solved.

[E,

Check operation of emergency relay valve (pare

4-58or4-59).

emergency

relay valve operational?

_A911111111111.

`qq@

EReplace

emergency

relay valve (para 4-5

co

5

59) V

9). Verify problem is solved.

continued

on next page

4-36