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
1. Add or change oil and filter if necessary
Pump is Noisy and Cylinder 1. Check hydraulic oil for correct oil
1.
(WP 0148 00). If air is present replace
viscosity or grade and for air (WP 0020
Rods Do Not Move Evenly.
any leaks.
00), contamination, and correct level
2. If problem still exists, go to Test 2.
(TM 5-3805-291-10).
2. Perform Relief Valve (Main, Load
1. Adjust as necessary.
Sensing) Test and Adjustment (WP
2. If problem still exists, replace pump
(WP 0215 00).
1. Machine is being operated above
1. Make sure load limits of machine's
2.
Oil Temperature is Too
intended capacity.
capacity are not being exceeded.
High.
2. If problem still exists, go to Test 2.
1. Add or change oil if necessary (WP
2. Check hydraulic oil for correct oil
0148 00).
viscosity or grade (WP 0020 00),
2. If problem still exists, go to Test 3.
contamination, and correct level (TM
5-3805-291-10).
3. Inspect hydraulic oil cooler fins and
1. If damaged or restricted, clean or
passages for restriction (WP 0193 00).
replace hydraulic oil cooler (WP 0193
00).
2. If problem still exists, go to Test 4.
4. Check for any leaks in system.
1. Repair any leaks.
2. If problem still exists, go to Test 5.
5. Check for oil passage restrictions.
1. Repair any restrictions.
2. If problem still exists, go to Test 6.
6. Perform Hydraulic Fan Speed Test and If problem still exists, go to Test 7.
Adjustment (WP 0015 00).
7. Inspect hydraulic oil cooler for
1. Remove any obstruction of air flow.
2. If problem still exists, go to Test 8.
restricted air-flow (WP 0193 00).
1. If temperature differential is more than
8. Use infrared thermometer to check
50F (10C) between the surface
surface temperature of hydraulic tank.
temperature of the hydraulic tank and
Compare to reading displayed in
the messenger read out, replace the
messenger.
hydraulic oil temperature sensor (WP
0083 00).
2. If problem still exists, go to Test 9.
9. Perform Relief Valve (Main, Load
If problem still exists, or relief valves can't
Sensing) Test and Adjustment (WP
be adjusted, replace piston pimp
(implement) (WP 0216 00).
1. Add or change oil and filter if necessary
1. Check hydraulic oil for correct oil
3.
Pump Output is Low.
(WP 0148 00).
viscosity or grade, contamination, and
correct level (WP 0020 00).
2. If problem still exists, go to Test 2.
2. Perform Implement Cycle Time Test
If problem still exists, go to Test 3.
