TM 5-2420-231-23-1
0081
Table 1. Backhoe Auxiliary Hydraulic Control Does Not Operate Correctly - Continued.
081
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Backhoe Auxiliary Hydraulic
Test Step 14. Verify That Symptom Is
Control Does Not Operate
Resolved.
Correctly - Continued
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.
5. Install backhoe hydraulic auxiliary
Backhoe Auxiliary Hydraulic
Attachment Not Available - Proceed
attachment to machine (TM 5-
tostep 6.
2420-231-10) if available.
Backhoe Auxiliary Hydraulic
Attachment Connected - Proceed to
step 7.
6. Using backhoe auxiliary control
Backhoe Auxiliary Hydraulic Hoses
buttons (Figure 2, Item 2) (Figure
Flex When Activated - Stop engine
2, Item 1) in forward then reverse
(TM 5-2420-231-10).
(TM 5-2420-231-10), monitor aux-
Troubleshooting complete.
iliary hydraulic hoses on machine.
Backhoe Auxiliary Hydraulic Hoses
Do Not Flex When Activated - Stop
engine (TM 5-2420-231-10).
Repeat troubleshooting from the
beginning.
7. Using backhoe auxiliary control
Backhoe Auxiliary Hydraulic
buttons, operate backhoe hydrau-
Attachment Operates Normally - Stop
lic auxiliary attachment forward
engine (TM 5-2420-231-10).
then reverse (TM 5-2420-231-10).
Troubleshooting complete.
Monitor and record machine oper-
Backhoe Auxiliary Hydraulic
ation.
Attachment Operates Slowly,
Intermittently, or Will Not Operate -
Stop engine (TM 5-2420-231-10).
Repeat troubleshooting from the
beginning.
END OF WORK PACKAGE
0081-15/(16 blank)
