TM 10-3930-675-24-1
TROUBLESHOOTING PROCEDURES (NON-ERROR CODE) - CONTINUED
0007 00
Table 8. Tophandler System Troubleshooting Procedures (Non-Error Code) - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6. Tophandler Twistlocks Will Not Rotate 2. Check operation of
all a. If no tophandler functions
Properly - Continued.
tophandler functions.
operate, check tophandler
pump pressure at test point 11
(WP 0188 00).
b. Troubleshoot pump control
circuit (611 solenoid) (WP
50).
c. Replace
steering
and
tophandler pump assembly
(WP 0242 00).
3. Check position of cab. Place cab in operational position
Twistlocks will not operate (TM 10-3930-675-10).
when the cab is not in the
operational position.
4. Check position of twistlock Place both valves in proper
cylinder bypass valves. With position.
tophandler in operational
position, left side valve points
forward and right side valve
points back.
5. Inspect bypass valves, lines, a. Remove any obstructions.
hoses, and twistlock cylinders b. Replace any damaged bypass
for
damage,
leaks,
or
valve line, hoses, or fittings,
obstructions.
Check
the
and tighten loose connections
tophandler
hose
quick-
(WP 0183 00).
disconnect
fittings
for c. Connect any disconnected
connection.
quick-disconnect fittings (WP
0183 00).
d. Replace damaged or leaking
twistlock cylinder (WP 0175
00).
6. Inspect twistlocks and linkage a. Remove obstructions.
arms
for
damage
or b. Replace damaged twistlock or
obstructions.
linkage (WP 0260 00).
7. Check tophandler control c. Replace damaged or leaking
for damage or leaking.
0007 00-86