TM 10-3930-675-20-1
0006 00-27
TROUBLESHOOTING PROCEDURES (NON-ERROR CODE) - CONTINUED
0006 00
Table 8. Tophandler System Troubleshooting Procedures (Non-Error Code) - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. Tophandler Will Not Rotate Left or Right
Properly.
1. Access maintenance ECS
display and check for active
hydraulic or electrical system
error codes (WP 0004 00).
2. Inspect tophandler slewing
motors for damage and signs of
leakage.
Replace damaged or leaking
slewing motor(s) (WP 0166 00).
3. Check
slewing
motor
hydraulic lines and hoses for
damage and signs of leakage.
a. Tighten loose connections.
b. Replace damaged or leaking
lines and hoses (WP 0181 00).
4. Test tophandler operating
pressure (WP 0186 00, test
point no. 11). Operating
pressure should be 3045 psi
(210 bar).
Notify DS Maintenance to adjust
or
replace
tophandler
and
steering
hydraulic
pump
assembly if pressure is not as
specified.
6. Tophandler Twistlocks Will Not Rotate
Properly.
1. Access maintenance ECS
display and check for active
hydraulic or electrical system
error codes (WP 0004 00).
Perform
troubleshooting
procedures to clear diagnostic
code(s) (WP 0005 00).
2. Inspect twistlock proximity
switches,
twistlocks,
and
control rods for obstructions
and damage.
a. Remove any obstructions.
b. Clean, replace or adjust
twistlock proximity switches
(WP 0074 00).
c. Notify DS Maintenance to
replace damaged twistlocks(s)
and control rod(s).
3. Inspect tophandler twistlock
cylinders for obstructions,
damage, and signs of leakage.
a. Remove any obstructions.
b. Replace damaged or leaking
twistlock cylinder(s) (WP
0173 00).
4. Check
twistlock
cylinder
hydraulic lines and hoses and
forklift
quick
disconnect
fittings for damage and signs
of leakage.
a. Tighten loose connections.
b. Replace damaged or leaking
lines and hoses (WP 0181 00).
5. Ensure that twistlock cylinder
bypass valves are in closed
position.
Close bypass valves as required
(WP 0192 00).