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
24. Connect side options wiring har-
Loader and Backhoe Quick-
ness connector (WP 0007, Figure
Couplers Do Not Operate -
209) to left backhoe quick-coupler
Continued
switch (WP 0007, Figure 210).
25. Connect batteries (WP 0157) and
turn ignition switch to the on posi-
tion (TM 5-2420-231-10).
26. Press and hold the left backhoe
hydraulic quick-coupler switch (TM
5-2420-231-10) for at lease 30
seconds.
27. Release left backhoe hydraulic
quick-coupler switch (TM 5-2420-
231-10).
28. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
29. Remove ride control fuse (TM 5-
2420-231-10).
30. Using a digital multimeter, mea-
Resistance 5.0 Ohms or Less -
Proceed to Test Step 7.
sure resistance between fuse ter-
minals. Resistance should be 5.0
Resistance Greater Than 5.0 Ohms -
Replace side options wiring harness
ohms or less.
(WP 0255).
Install ride control fuse (TM 5-2420-
231-10).
Connect all wiring harness connectors.
Install instrument panel front covers
(WP 0174).
Proceed to Test Step 8.
Test Step 4. Test Quick-Coupler
Switch Voltage Supply Circuit for a
Short to Ground in Front Console
Options Wiring Harness.
1. Disconnect front console options
wiring harness connector (WP
0007, Figure 205) from front con-
sole wiring harness connector (WP
0007, Figure 206) (WP 0162).
2. Using a digital multimeter, test for
Continuity - Replace front console
continuity between front console
options wiring harness (WP 0162).
options wiring harness connector
Connect all wiring harness connectors.
(WP 0007, Figure 205) terminal A
Install bezel on rear instrument panel
and machine ground. There should
right-side cover (WP 0176).
be no continuity.
Install new ride control fuse (TM 5-
2420-231-10).
Proceed to Test Step 8.
No Continuity - Proceed to step 3.
0069-7