TM 5-2420-231-23-1
0072
Table 1. Backhoe Bucket Quick-Coupler Does Not Operate Correctly - Continued.
072
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 2. Test for Voltage to Right
Backhoe Bucket Quick-
Backhoe Quick-Coupler Switch.
Coupler Does Not Operate -
Continued
1. Ensure ignition switch is in the off
position (TM 5-2420-231-10) and
disconnect batteries (WP 0157).
2. Remove screw (Figure 2, Item 1)
from rear instrument bezel (Figure
2, Item 4).
3. Pull rear instrument bezel (Figure
2, Item 4) from rear instrument
panel right-side cover (Figure 2,
Item 5) (WP 0176).
4. Disconnect side options wiring har-
ness connector (Figure 2, Item 6)
(WP 0007, Figure 207) from right
backhoe quick-coupler switch (Fig-
ure 2, Item 3) (WP 0007, Figure
208) (WP 0172).
5. Disconnect side options wiring har-
ness connector (Figure 2, Item 7)
(WP 0007, Figure 209) from left
backhoe quick-coupler switch (Fig-
ure 2, Item 2) (WP 0007, Figure
210) (WP 0172).
6. Connect batteries (WP 0157) and
turn ignition switch to the on posi-
tion (TM 5-2420-231-10).
7. Using a digital multimeter, mea-
Voltage 10 to 14 Volts - Proceed to
sure voltage between side options
step 8.
wiring harness (WP 0007, Figure
Voltage Less Than 10 Volts - Proceed
207) terminal 2 and machine
to Test Step 3.
ground. Voltage should be 10 to 14
volts.
0072-4
