TM 5-2420-231-23-1
0078
Table 1. Left Stabilizer Does Not Operate Correctly - Continued.
078
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 14. Test for Shorted Pilot
Left Stabilizer Does Not
Control Wiring Harness to Left-Hand
Operate Correctly -
Stabilizer Up Solenoid.
Continued
1. Disconnect pilot control wiring har-
ness connector (WP 0007, Figure
179) from left-hand stabilizer up
solenoid (WP 0007, Figure 180).
2. Using a digital multimeter, test for
Continuity - Replace pilot controls
continuity between pilot control
wiring harness (WP 0187).
wiring harness connector (WP
Proceed to Test Step 16.
0007, Figure 179) terminals 1 and
No Continuity - Proceed to Test Step
2. There should be no continuity.
15.
Test Step 15. Test for Open Pilot
Control Wiring Harness to Left-Hand
Stabilizer Up Solenoid.
1. Install a jumper wire between pilot
control wiring harness connector
(WP 0007, Figure 160) terminals 3
and 2.
2. Using a digital multimeter, mea-
Resistance 5.0 Ohms or Less -
sure resistance between pilot con-
Replace backhoe pilot control controller
trol wiring harness connector (WP
(WP 0191).
0007, Figure 179) terminals 1 and
Remove jumper wire from pilot control
2. Resistance should be 5.0 ohms
wiring harness connector (WP 0007,
or less.
Figure 160) terminals 2 and 3.
Connect all wiring harness connectors.
Proceed to Test Step 16.
Resistance Greater Than 5.0 Ohms -
Replace pilot controls wiring harness
(WP 0187).
Proceed to Test Step 16.
Test Step 16. Verify That Symptom Is
Resolved.
1. Ensure all wiring harness connec-
tors are connected.
2. Start and operate machine (TM 5-
2420-231-10).
3. Turn pilot control switch to the on
position (TM 5-2420-231-10).
4. Wait 2 seconds before operation.
0078-9