TM 5-3805-290-23-1
TROUBLESHOOTING WITHOUT A DIAGNOSTIC CODE - CONTINUED
0008 00
Table 6. Braking and Hydraulic Fan System Troubleshooting - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Check service brake pedal and linkage
1. If damaged, replace brake pedal
6.
Too Much Force is Needed
for damage (WP 0094 00).
assembly.
to Push Brake Pedal.
2. If problem still exists, go to Test 2.
2. Check nitrogen charge in brake
1. If necessary, charge or replace
accumulators (WP 0096 00). Connect
accumulators.
MSD (WP 0006 00) and compare gage 2. If gage and MSD reading do not match,
on nitrogen charging station with brake
replace brake charging pressure sensor
charging pressure sensor reading on
(WP 0071 00).
ET.
3. If problem still exists, replace brake
control valve (WP 0093 00).
4. If problem still exists, replace braking
and hydraulic fan gear pump (WP 0186
00).
5. If problem still exists, replace axle(s)
(WP 0179 00 and WP 0180 00).
1. Check parking brake adjustment (WP
1. If parking brake is out of adjustment,
7.
Parking Brake Does Not
0092 00).
adjust parking brake.
Hold Machine Stationary.
2. If parking brake adjustment is OK, go
to Test 2.
2. Check parking brake linings for wear
1. If parking brake linings are worn,
(WP 0092 00).
replace them.
2. If parking brake drums are oily, clean
drums.
Check parking brake cable for incorrect
If damaged, stretched, or out of
8.
Parking Brake Does Not
adjustment, damage, or disconnection (WP adjustment, replace or adjust parking brake
Engage When Parking
0092 00).
cable as necessary.
Brake Control Lever is
Actuated.
1. Check hydraulic system oil level (TM
1. Add oil as necessary.
9.
Low Oil Pressure Warning
2. If problem still exists, go to Test 2.
Indicator Will Not Turn
Off.
2. Run engine at high rpm while
1. If warning indicator turns off with
observing warning indicator (TM 5-
engine at high idle, replace braking and
3805-290-10).
hydraulic fan gear pump (WP 0186 00).
2. If problem still exists, refer to
Malfunction 10, Pressure in
Accumulators Does Not Decrease
When Brakes Are Applied, or
Decreases Without Applying Brakes in
this work package.
3. If problem still exists, pinpoint faulty
wiring harness and replace (WP 0169
00 thru WP 0175 00). Refer to
Electrical System Schematic (WP 0210
