TM 5-2330-325-14&P
Table 4-3. Unit Troubleshooting (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
HYDRAULIC SYSTEM (Continued)
Step 2.
Check hydraulic pressure setting.
If hydraulic presure is low, set hydraulic pressure in accordance with paragraph
Step 3.
Check throttle valve for obstruction.
If throttle valve is clogged, clean throttle valve in accordance with para. 4-65.
Step 4
Check cylinder for internal leaks.
Fully retract cylinder rod. Disconnect and cap hydraulic hose connected opposite
of the rod end cylinder port.
WARNING
Do not exceed 3000 psi. Serious injury or death may occur if pressure
exceeds 3000 psi.
Apply pressure to the rod end port and inspect for leakage out of the open port.
(Small drips more than 10 seconds apart are acceptable). If more significant
leakage is present, notify direct support maintenance for cylinder replacement.
2.
PLATFORM LIFT CYLINDERS ARE INOPERABLE
Step 1.
Check for leaks.
Notify direct support maintenance for cylinder replacement.
Step 2.
Check hydraulic pressure setting.
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.
If hydraulic pressure is low, set hydraulic pressure in accordance with paragraph 4-
4-30
