TM 5-2420-231-23-1
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Table 1. Backhoe Auxiliary Hydraulic Control Does Not Operate Correctly - Continued.
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MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
8. Observe indicator (Figure 4, Item
Indicator Flashes On for 3 Seconds
Backhoe Auxiliary Hydraulic
1) on pilot control controller (Figure
Then Off for Less Than 1 Second
Control Does Not Operate
Continuously (Normal) - Proceed to
4, Item 2) (WP 0006).
Correctly - Continued
Test Step 6.
Indicator Flashes On Once With a 2-
Second Pause - Proceed to Test Step
7.
Indicator Flashes On and Off Twice
With a 2-Second Pause - Proceed to
Test Step 9.
Indicator Flashes On and Off Three
Times With a 2-Second Pause -
Stabilizers and auxiliary controls are
faulty. Perform Stabilizers and Auxiliary
Controls Do Not Operate (WP 0080),
then proceed to Test Step 14.
Indicator Flashes On and Off Four
Times With a 2-Second Pause -
Proceed to Test Step 11.
9. Turn off engine (TM 5-2420-231-
10).
Figure 4. Pilot Controls Controller.
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