TM 5-3805-290-23-1
TROUBLESHOOTING WITHOUT A DIAGNOSTIC CODE - CONTINUED
0008 00
Table 7. Hydraulic System Troubleshooting - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Check hydraulic oil level (TM 5-3805- 1. Add oil if necessary.
10. Oil Temperature is Too
290-10).
2. If problem still exists, go to Test 2.
High.
2. Inspect hydraulic oil cooler for
1. If damaged or restricted, clean or
restriction (WP 0089 00).
replace hydraulic oil cooler.
2. If problem still exists, go to Test 3.
3. Check for air in system.
If air is present, refer to Malfunction 11,
There Are Air Bubbles in Oil in this work
package.
4. Check hydraulic oil for correct oil
1. Add or change oil and filter if necessary
viscosity or grade (WP 0019 00),
(WP 0137 00). If dirty or obstructed,
contamination, and correct level (TM
clean sump screen.
5-3805-290-10). Remove cap from
2. If problem still exists, perform Relief
hydraulic oil tank and inspect sump
Valve (Line) Test and Adjustment (WP
screen (TM 5-3805-290-10).
N OT E
11. There Are Air Bubbles in
Oil.
A problem with air in hydraulic oil must be corrected before hydraulic sys-
tem will operate at normal temperatures.
1. Check for a loose connection on oil line 1. Tighten all loose connections and
on inlet side of pump. Visually inspect
replace leaking or damaged lines (WP
all pump lines for leaks or restrictions.
0131 00).
2. If problem still exists, go to Test 2.
2. Return oil may be flowing into
1. Add oil if necessary.
hydraulic tank above level of oil in
2. If problem still exists, replace
tank. Check hydraulic oil level (TM 5-
implement pump (WP 0182 00).
3805-290-10).
If problem still exists, go to Test 2.
1. Check standby pressure. Refer to
12. Cycle Times Are Not
Piston Pump Pressure Test and
Correct.
Adjustment (WP 0017 00).
2. Check for leaks in system, specifically
1. Repair any leaks or replace damaged
O-rings.
O-rings in system (WP 0131 00).
2. If problem still exists, replace main
control valve (WP 0189 00).
3. If problem still exists, replace
implement pump (WP 0182 00).
1. Replace quick coupler switch (WP
If problem still exists, go to Test 2.
13. Quick Coupler Does Not
0049 00).
Operate.
2. Replace quick coupler solenoid valve
If problem still exists, replace steering
(WP 0138 00).
pump (WP 0182 00).
