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
N OT E
6.
Lift Cylinder Droops When
Lift Control Lever is Moved
Droop is an initial movement of hydraulic cylinders. After joystick move-
from HOLD to RAISE
ment in opposite direction, cylinders will move in correct direction.
Position.
1. Check operation when oil is warm (TM If problem still exists, go to Test 2.
5-3805-291-10).
2. Check for leaks or damage to lift
1. If damaged, replace lift cylinder(s)
cylinders.
(WP 0153 00).
2. If problem still exists, go to Test 3.
3. Perform Main Control Valve (MSD)
If faulty, replace control valve (WP 0218
Calibration (WP 0017 00).
00).
1. Increased load could be impeding
Hydraulic Force is Too Low 1. Ensure machine is being operated
7.
performance of machine.
within specified parameters (TM 5-
When Lift Control Lever is
3805-291-10).
2. If problem still exists, go to Test 2.
Moved to RAISE or
LOWER Positions.
2. Check for active diagnostic codes.
1. If any diagnostic codes exist, refer to
Troubleshooting with a Diagnostic
Code (WP 0009 00).
2. If there are no diagnostic codes, then
perform Main Control Valve (MSD)
Calibration (WP 0017 00).
3. If problem still exists, go to Test 3.
3. Perform Relief Valve (Main, Load
1. Adjust as necessary.
Sensing) Test and Adjustment (WP
2. If problem still exists, go to Test 4.
4. Perform Joystick Control Position
1. If damaged, replace lift sensor (WP
Sensor Calibration (WP 0017 00).
0085 00).
2. If problem still exists, go to Test 5.
5. Perform Pilot Pressure to Main
If damaged, replace main control valve
Control Valve Check (WP 0017 00).
(WP 0218 00).
1. Perform Joystick Control Position
If problem still exists, go to Test 2.
8.
One Implement Function is
Sensor Test with MSD.
Sluggish or Nonfunctional.
2. Check for active diagnostic codes.
1. If any diagnostic codes exist, refer to
Troubleshooting with a Diagnostic
Code (WP 0009 00).
2. If there are no diagnostic codes, then
perform Main Control Valve (MSD)
Calibration (WP 0017 00).
3. If problem still exists, go to Test 3.
3. Perform Relief Valve (Main, Load
1. Adjust as necessary.
Sensing) Test and Adjustment (WP
2. If problem still exists, go to Test 4.