TM 5-3895-379-23
TROUBLESHOOTING PROCEDURES - CONTINUED
0006 00
Table 5. Propel Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Parking Brake Does Not Disengage 1. Open left-side door assembly 1. If
magnetic
force
pulls
7.
(TM 5-3895-379-10) and check
screwdriver to brake solenoid,
When Parking Brake Switch is Pulled
for brake solenoid operation.
replace brake control valve (WP
Up - Continued.
With propel speed switch in high
(hare) position, turn battery
disconnect switch and engine 2. If magnetic force does not pull
screwdriver to shift solenoid, go to
start switch to ON position (TM
5-3895-379-10). Place blade end
Step 2.
of screwdriver approximately 1/4
inch (6 mm) from center of hex
nut on brake solenoid. Magnetic
force should pull screwdriver to
brake solenoid.
2. Check for power at brake control 1. If 24 to 28 Vdc are measured at
valve connector. Disconnect
brake control connector, (wire
harness connector from brake
777-PU), turn engine start switch
control connector (wire 777-PU).
and battery disconnect switch to
Set multimeter to measure Vdc.
OFF position (TM 5-3895-379-
Touch positive (+) probe of
10). Replace brake control valve
multimeter to connector P20, pin
1 (wire 777-PU) and negative (-)
probe of multimeter to good 2. If 24 to 28 Vdc are not measured
at brake control connector (wire
ground.
777-PU), close left-side door
assembly. Turn battery disconnect
switch and engine start switch to
OFF position (TM 5-3895-379-
10). Go to Step 3.
WIRE 200-BK
TERMINAL 2
BRAKE
SOLENOID
CONNECTOR
WIRE
777-PU
BRAKE SOLENOID
HARNESS
CONNECTOR
TERMINAL 1
401-824
0006 00-100
