TM 5-2330-325-14&P
Table 3-1. Operator Troubleshooting (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
HYDRAULIC SYSTEM
WARNING
Do not work under gooseneck without lock pins securely in place. Serious
injury or death may result.
Always ensure that the trailer is coupled to the prime mover and all parking
brakes are set prior to attempting to free lock pins that will not retract. Failure
to do so may result in serious injury or death.
NOTE
A reading of 2500 psi is only on gauge (1) when hydraulic controls are in
use. Readings will drop to 500 psi when levers are disengaged.
The psi will vary due to load. Hydraulic pressures will vary from 300 to 2500
psi under normal operation, and will reach a maximum of 2500 to 2800 psi
under full load.
1.
GOOSENECK TILT OR LIFT CYLINDERS WILL NOT EXTEND/RETRACT
Step 1.
Ensure that prime mover hydraulic fluid is at appropriate level (Ref. as required:
M916A1, M916A2 - TM 9 -2320-363, M916A3 - TM 9-2320-302.
Step 2.
Ensure that Power Take Off (PTO) is engaged.
Step 3.
Check hydraulic gauge for sufficient pressure.
(Pressure will vary from 300 - 2500 psi for normal operation and from 2500 - 2800
psi under a full load)
Notify Unit Maintenance if pressure reads below 300 psi.
Step 4.
Check tilt and lift cylinder rams for evidence of wall pitting, scoring, or hydraulic oil seal
leakage.
Notify Unit Maintenance if severe wall pitting or oil leakage is evident.
