FRONT LOADER WILL NOT OPERATE USING BUCKET SWITCH (SEE).

TM 5-2420-224-20-1

Table 3-5. Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

ELECTRICAL SYSTEM (CONT)

77. FRONT LOADER WILL NOT OPERATE USING BUCKET SWITCH (SEE).

NOTE

Vehicle MASTER disconnect switch must be ON and ignition switch set to ON.

Failure to do so will cause erroneous results.

Refer to wiring diagram for all wiring repair steps.

Step 1. Check for +24 VDC between wire 70S (1) and ground at bucket switch (2).

If +24 VDC is not present, repair wiring 70S between bucket

switch and connector X.

+24 VDC is present, go to step 2.

NOTE

Perform steps 2 and 3 for failure in down (ON) position. Perform steps 4 and 5 for failure

in UP position.

Step 2. With bucket switch (2) in DN position, check for +24 VDC between wire 71 U

(3) and ground at bucket switch.

If +24 VDC is not present, replace bucket switch (page 4-1 51).

If +24 VDC is present, go to step 3.

Step 3. With bucket switch (2) in DN position, check for +24 VDC between wire 71 U

(3) and ground at bucket solenoid (4).

If +24 VDC is not present, repair wiring 71 U between bucket

switch and bucket solenoid.

If +24 VDC is present, notify direct support maintenance.

Step 4. With bucket switch (2) in UP position, check for +24 VDC between wire 710

(5) and ground at bucket switch.

If +24 VDC is not present, replace bucket switch (page 4-151).

If +24 VDC is present, go to step 5.

Step 5. With bucket switch (2) in UP position, check for +24 VDC between wire 71 D

(5) and ground at bucket solenoid (6).

If +24 VDC is not present, repair wiring 71 D between bucket

switch and bucket solenoid.

If +24 VDC is present, notify direct support maintenance.