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 66 of 524
TM6-2330-398-14&P
3-4. TROUBLESHOOTINGCHART.
a. LIGHTS
(1) NO LIGHTS WORK.
WARNING
Make
sure
all electrical
power
Is
disconnected
before performing
any
maintenance
onthe electrical system.
Serious
injury or death may occur if
safety precautions
are not observed.
A.
Check towing vehicle lights, including turn sig-
nals and stoplights.
Do towing vehicle lights operate?
'asehh,
I -
,qq@
9
For the M870, troubleshoot
using operator's
manual for truck tractor. Verify problem is
solved.
For the M870AI,
notify
Unit
maintenance.
B. Check intervehicular electrical cable for proper
connection.
0
Is cable connected
properly?
0
CABLE RECEPTACLES
'46fthh,
I
'qIIAI@
Reconnect intervehicular
electrical cable (para
24-VOLT
2-8). Verify problem is solved.
C.
Check both ends of cable connectors
and recep-
CABLE CONNECTORS
tacles for dirty or corroded pins and dirty, cor-
roded, or plugged sockets.
Are pins or sockets dirty, corroded, or plugged?
1110
T_
VO.
@
CABLE
VOLT
@12-VOLT
continuedon nextpage
3-4
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