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 122 of 524

TM5-2330-378-14&P

4-16. TROUBLESHOOTINGCHART(continued).

b. BRAKES (continued)

(3) BRAKES DO NOT RELEASE.

Initial Setup:

Tools/Test

Equipment:

- Parking brake applied (see operator's

manual

- Too] kit, general mechanids:

automotive

fortowing vehicle).

(Item 7, Appendix B)

- Wheels chocked (pare 2-10).

Equipment Conditions:

-Semitrailer

coupled to towing vehicle.

Engineoff

(see operator's manual for towing vehicle).

A. Check for defective relay emergency valve and

multifunction

valve.

Is either valve defective?

___qWV"

-

_AP1111,

Replace defectivevalve (para4-54,4-55,

or4-56).

Verify problem is solved.

B. Check air hose connections to towing vehicle.

Are air hoses connected

property?

I

Connect air hoses property. Verify problem is

solved.

position of brake valve on towing vehicle.

Is brake valve in release position?

M

Move brake valve to release position.

ov

rr

Eproblem

is solved.

continued

on next page

4-34