TM 5-2420-231-23-1
0079
Table 1. Right Stabilizer Does Not Operate Correctly - Continued.
079
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 6. Check Pilot Control
Right Stabilizer Does Not
Controller Indications.
Operate Correctly -
Continued
1. Start engine (TM 5-2420-231-10).
2. Place pilot control switch in the on
position (TM 5-2420-231-10).
3. Wait 2 seconds before operation.
4. Attempt to operate right stabilizer
(TM 5-2420-231-10).
5. Check indicator on pilot control
Indicator Flashes On for 3 Seconds
controller (WP 0007, Figure 160).
Then Off for Less Than 1 Second
Pilot control indicator should flash
Continuously (Normal) - Proceed to
on for 3 seconds then off for less
Test Step 7.
than 1 second continuously (WP
Indicator Flashes On Once With a 2-
Second Pause - Proceed to Test Step
8.
Indicator Flashes On and Off Twice
With a 2-Second Pause - Proceed to
Test Step 10.
Indicator Flashes On and Off Three
Times With a 2-Second Pause -
Proceed to Test Step 11.
Indicator Flashes On and Off Four
Times With a 2-Second Pause -
Proceed to Test Step 12.
Test Step 7. Test Pilot Control Flow.
Perform pilot control valve test (WP
Pilot Control Flow Greater Than 1
gpm - Perform Flowmeter Disconnect
Procedure (WP 0086).
Replace backhoe control valve
assembly (WP 0263).
Proceed to Test Step 16.
Pilot Control Flow Less Than 1 gpm
- Perform Flowmeter Disconnect
Procedure (WP 0086).
Replace pilot control valve assembly
(WP 0264).
Proceed to Test Step 16.
Test Step 8. Test for Shorted Pilot
Control Wiring Harness to Ground.
1. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
2. Disconnect pilot control wiring har-
ness connector (WP 0007, Figure
160) from pilot control controller
(WP 0187).
3. Remove stabilizer control switches
(WP 0190).
0079-6
