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 102 of 524

TM 5-2330-378-14&P

4-16. TROUBLESHOOTINGCHART(continued).

a. LIGHTS (continued)

(2) NO TRAILER LIGHTS WORK (MMA1).

Initial Setup:

Tools/Test Equipment:

- Parking brake applied (see operator's manual

- Tool kit, general mechanic's: automotive

for 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).

WARNING

ALWAYS

make sure all electrical

power

is disconnected

before performing

any

maintenance

on the electrical

system.

Serious injuryordeath

may occur If safety

precautions

are not observed.

A.

Check intervehicu lar cable socket (1) and connec-

tor (2) for proper connections.

Are intervehicular cable socket (1) and connector (2)

connected

properly?

l

Pull out intervehicular

cable connector (2) @nd

reinsert fully in cable socket (1). Verify problem

24-VOLT

issolved.

B. Check setting of light switch on towing vehicle.

Is light switch set properly?

Set light switch properly.

Verify problem is

12-VOLT

solved.

'40904

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