TM-9-2330-238-14
CHASSIS, SEMITRAILER: 6-TON, 4-WHEEL M295A1; SEMITRAILER, VAN: EXPANSIBLE, 6-TON, 4-WHEEL M313; SEMITRAILER, VAN: SHOP, FOLDING SIDES, 6-TON, 4-WHEEL M447 AND M447C; SEMITRAILER, VAN: REPAIR PARTS, SHOP EQUIPMENT, 6-TON, 4-WHEEL M749; SEMITRAILER, VAN: REPAIR PARTS STORAGE, 6-TON, 4-WHEEL M750
TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL
JULY 1992
TM-9-2330-238-14 - Page 94 of 462
TM
9-2330-238-14
3-5.
TROUBLESHOOTING
SYMPTOM
INDEX.
Troubleshooting
BRAKES
Brakes Are Slow to
Engage
or Release
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brakes
Grab
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brakes
Do Not Engage
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brakes
Do Not Release
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRICAL
SYSTEM
All24-volt
Lamps
Fail to Light.
...
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
All Chassis
Lights
Are On and Van
Body
Clearance
Lights
Are Off
. . . . . . . . . . . . . . . . . . . . . . . . . .
Directional
Signals
Inoperative.
.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
One or
More 24-volt
Lamps
(But Not All) Fail to Light
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LEVELING
JACKS
Erratic Operation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SUSPENSION
SYSTEM
Semitrailer
Sags to
One Side.
..
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WHEELS AND TIRES
Air Leakage from Tires
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Excessively
Worn,
Scuffed,
or Cupped
Tires
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Noisy
or Wobbly
Wheels
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3-1. Operator/Crew
Troubleshooting.
Procedure
Page
3-10
3-10
3-9
3-10
3-8
3-9
3-9
3-9
3-11
3-11
3-11
3-10
3-11
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE
ACTION
ELECTRICAL
SYSTEM
1.
ALL 24-VOLT LAMPS
FAIL TO LIGHT.
Step
1.
Step 2.
Step 3.
Step 4.
Check that towing
vehicle
lights
are turned
on.
Refer to towing
vehicle
technical
manual
for instructions.
Check
intervehicular
cable
for proper
connection.
Connect
intervehicular
cable
(para 2-10).
Check for dirty or corroded
intervehicular
cable
terminals.
If
connectors,
receptacles,
and
plugs
are
dirty
or
corroded,
notify
Organizational
Maintenance.
Check for proper
ground
connections
at light assemblies.
Tighten
ground
connections
as required.
3-8
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