Table 4-4. Unit Troubleshooting. - Continued
Test or Inspection
BAY DOES NOT OPEN PROPERLY - Continued
Check cable adjustment.
RAMP DOES NOT ACTIVATE WHEN PUMP HANDLE IS PUMPED
Check position of control and vent valves.
Position valves correctly.
Inspect reservoir for proper oil level.
Check for crimped, ruptured, pinched or hydraulic lines.
Replace damaged lines and tighten loose fittings.
Test cylinder and pump for internal damage.
Disconnect line at lower end of cylinder, operate pump in PUMP mode, and check for oil
If no oil flow is present, replace pump.
If oil flow is present, reconnect lower line, disconnect upper line, and operate pump again.
If oil flow is present, and cylinder extends, replace pump.
If no oil flows from the cylinder, cylinder is defective.
BAY LOWER LOCK DRIVE SCREW DOES NOT MOVE FREELY
Dry cleaning solvent, PD-680, used to clean parts is potentiality dangerous to personnel and property.
Avoid repeated and prolonged skin contact. Do not use near open flame or excessive heat. Flash point
of solvent is 100-138F (39-59 °C).
Check drive screw for freedom of movement and binding.
Apply grease per MIL-G-21164 to screw threads.
Check condition of threads and adjustment of lower lock drive.
Replace damaged lower lock drive.