TM 5-2420-231-23-1
0064
Table 1. All Hydraulic Functions Move Slowly or Have No Power - Continued.
064
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. Start and operate the engine (TM
All Hydraulic Functions
5-2420-231-10), and operate front
Move Slowly or Have No
end loader and backhoe at various
Power - Continued
loads for approximately 10
minutes.
4. Monitor and record hydraulic oil
Hydraulic Oil Filter Warning Lamp
Does Not Illuminate - Proceed to Test
filter warning lamp (Figure 2, Item
Step 3.
1) (TM 5-2420-231-10). Turn off
engine (TM 5-2420-231-10).
Hydraulic Oil Filter Warning Lamp
Illuminates During Machine
Operation - Change hydraulic oil (WP
0086) and hydraulic oil filter (WP 0268).
Figure 2. Hydraulic Oil Filter Warning Lamp.
0064
Test Step 3. Setup and Test of
Pressure Reducing Valve.
1. Perform pilot pressure test (WP
Pilot Pressure 400 to 550 psi (2,758
0086). Pressure reading should be
to 3,792 kPa) - Disconnect pressure
400 to 550 psi (2,758 to 3,792
gauge and hose.
kPa).
Proceed to Test Step 4.
Pilot Pressure Not Within 400 to 550
psi (2,758 to 3,792 kPa) - Proceed to
step 2.
