TM 5-3805-291-23-1
TROUBLESHOOTING WITHOUT A DIAGNOSTIC CODE - CONTINUED
0008 00
Table 7. Hydraulic System Troubleshooting - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. Perform Relief Valve (Main, Load
If problem still exists, perform Relief Valve
3.
Pump Output is Low -
Sensing) Test and Adjustment (WP
(Line) Test and Adjustment (WP 0017 00).
Continued.
1. Inspect hydraulic system for leaks.
1. Repair any leaks found.
4.
Oil Pressure is Low.
2. If problem still exists, go to Test 2.
2. Perform Relief Valve (Main, Load
1. Adjust as necessary.
Sensing) Test and Adjustment (WP
2. If problem still exists, replace control
valve (WP 0218 00).
3. If problem still exists, replace pump
(WP 0215 00).
1. Check for oil leaks around piston seals
1. If leaks are present, replace the leaky
5.
Work Tool Moves While
of lift and tilt cylinders.
cylinder (WP 0152 00 or WP 0153 00).
Control Lever is in HOLD
2. If problem still exists, go to Test 2.
Position.
2. Check for leak in line(s) between
1. Repair any leaks present (WP 0156 00
control valve and cylinder that is
or WP 0157 00).
drifting.
2. If problem still exists, go to Test 3.
3. Perform Main Control Valve (MSD)
If problem still exists, go to Test 4.
Calibration (WP 0017 00).
4. Perform Joystick Control Position
If problem still exists, go to Test 5.
Sensor Calibration (WP 0017 00).
5. Check for active diagnostic codes for 1. Troubleshoot any active diagnostic
the joystick position sensors (WP 0006
codes.
00).
2. If no codes are present and a joystick
position sensors is suspected, use
electrical schematic (WP 0236 00) to
troubleshoot joystick position sensors.
Replace joystick if sensor is faulty (WP
0219 00).
3. If problem still exists, go to Test 6.
6. Check for active diagnostic codes for
1. Troubleshoot any active diagnostic
the pilot hydraulic solenoid (WP 0006
codes.
00).
2. If no codes are present and a pilot
hydraulic solenoid is suspected, use
electrical schematic (WP 0236 00) to
troubleshoot pilot hydraulic solenoid.
Replace solenoid if faulty (WP 0218
00).
3. If problem still exists, replace main
control valve (WP 0218 00).
