TM 5-2420-231-23-1
0073
Table 1. Multiple Backhoe Operations (Pilot Controls) Do Not Function Correctly.
0073
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 1. Test Operation of
Multiple Backhoe
Backhoe Controls.
Operations (Pilot Controls)
Do Not Function Correctly
1. Start and operate machine (TM 5-
2420-231-10).
2. Turn pilot control switch (Figure 1,
Pilot Control Switch Illuminates -
Item 1) to the on position (TM 5-
Proceed to step 3.
2420-231-10).
Pilot Control Switch Does Not
Illuminate - Proceed to Test Step 2.
3. Operate backhoe control pattern
Pilot Control Pattern Switch
switch (Figure 1, Item 2) to pattern
Illuminates (Pattern 1) - Proceed to
1 (TM 5-2420-231-10). Monitor
step 4.
and record machine operation.
Pilot Control Pattern Switch Does
Not Illuminate - Proceed to Test Step
20.
Figure 1. Backhoe Pilot Control and Control Pattern Switches.
0073
4. Wait 2 seconds before operation.