TM 5-2420-231-23-1
0069
Table 1. Loader and Backhoe Quick-Couplers Do Not Operate - Continued.
069
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. Using a digital multimeter, test for
Continuity - Replace side options
Loader and Backhoe Quick-
continuity between chassis options
wiring harness (WP 0255).
Couplers Do Not Operate -
wiring harness connector (WP
Connect all wiring harness connectors.
Continued
0007, Figure 42) terminal G and
Install new ride control fuse (TM 5-
machine ground. There should be
2420-231-10).
no continuity.
Proceed to Test Step 8.
No Continuity - Replace loader tool
and backhoe bucket coupler solenoid
valve assembly (WP 0260).
Connect all wiring harness connectors.
Install new ride control fuse (TM 5-
2420-231-10).
Proceed to Test Step 8.
Test Step 8. Verify That Symptom Is
Resolved.
1. Ensure all wiring harness connec-
tors are connected.
2. Start and run the engine (TM 5-
2420-231-10).
3. Lower FEL bucket flat on ground
(TM 5-2420-231-10).
4. Activate FEL tool carrier switch to
retract FEL locking pins and
remove FEL bucket from machine
(TM 5-2420-231-10).
5. Set up machine to remove back-
hoe bucket (TM 5-2420-231-10).
6. Press and hold the left backhoe
hydraulic quick-coupler switch,
and the right backhoe hydraulic
quick-coupler switch (TM 5-2420-
231-10).
7. Operate machine to release back-
Front End Loader Bucket and
hoe bucket (TM 5-2420-231-10).
Backhoe Bucket Release From
Machine - Troubleshooting complete.
Front End Loader Bucket and
Backhoe Bucket Do Not Release
From Machine - Repeat
troubleshooting from the beginning.
END OF WORK PACKAGE
0069-12
