TM 5-2420-231-23-1
0070
Table 1. Return-to-Dig Function Fails to Operate or Operates Improperly - Continued.
070
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 3. Verify Operation of
Return-to-Dig Function Fails
Return-to-Dig Function.
to Operate or Operates
Improperly - Continued
1. Operate return-to-dig function as
Teeth and Bucket Not in Correct
follows:
Position (Function Shut Off Too
Soon) - Adjust return-to-dig limit switch
a. Raise bucket approximately 5 ft
(WP 0278).
(1.5 m) (TM 5-2420-231-10).
Proceed to Test Step 9.
b. Roll bucket out to full dump
Teeth and Bucket Not in Correct
position (TM 5-2420-231-10).
Position (Function Shut Off Too
c. Place loader control handle in
Late) - Adjust return-to-dig limit switch
return-to-dig position (45
(WP 0278).
degree angle toward steering
Proceed to Test Step 9.
column) (TM 5-2420-231-10).
Teeth and Bucket Not in Correct
The bucket should
Position (Function Does Not
automatically roll back and
Operate) - Proceed to Test Step 4.
stop.
d. Lower bucket to ground (TM 5-
2420-231-10).
e. Verify front teeth are sitting
relatively flat on the ground with
rear of bucket having a slight
forward tilt.
Test Step 4. Inspect for Open Return-
to-Dig Fuse.
1. Turn ignition switch to off position
(TM 5-2420-231-10) and discon-
nect batteries (WP 0157).
2. Remove return-to-dig fuse (TM 5-
2420-231-10).
3. Using digital multimeter, measure
Resistance 5.0 Ohms or Less - Install
resistance between terminals of
return-to-dig fuse (TM 5-2420-231-10).
return-to-dig fuse. Resistance
Proceed to Test Step 5.
should be 5.0 ohms or less.
Resistance Greater Than 5.0 Ohms -
Install new return-to-dig fuse (TM 5-
2420-231-10).
Proceed to Test Step 7.
Test Step 5. Test Voltage and Ground
to Return-to-Dig Solenoid.
1. Disconnect return-to-dig solenoid
harness connector from front main
chassis wiring harness connector
(WP 0007, Figure 226).
2. Connect batteries (WP 0157).
3. Raise bucket, roll bucket out to full
dump position, and engage safety
support strut (TM 5-2420-231-10).
4. Turn engine off (TM 5-2420-231-
10).
0070-4
