TM 5-3805-281-24-1
Diagnostic Information
Part Name
Power Boost Switch
HP (High Power) Mode
E (Economy) Mode
Propel Speed Switch
Switch
Switch
Operational
To actuate the power boost
To actuate the HP mode
To actuate the E mode
To change propel speed
Function
function.
function.
function
between fast and slow
speed.
Control Problems
For open circuit, no
No electrical signal to
For open circuit, no
No electrical signal sent to
electrical signal to engine
engine and pump controller.
electrical signal to engine
engine and pump controller.
and pump controller. For
For short circuit, electrical
and pump controller. For
short circuit, operates for 8
signal to engine and pump
short circuit, electrical
seconds when key switch
controller at all times.
signal to engine and pump
turned on, but then
controller at all times.
becomes inoperative.
Machine Symptoms
Digging or lifting force does
For open circuit, engine
For open circuit, engine
For open circuit, propel
not increase.
speed does not increase
speed does not decrease
speed stays at slow speed
when hydraulic pressure
from fast idle. For short
when switch is turned to
increases to specified
circuit, engine speed does
fast speed (rabbit).
pressure. For short circuit,
not increase to fast idle.
engine speed increases
even with switch off (up).
Laptop Computer
--
--
--
--
Self-Diagnostic
Function
Laptop Computer
Monitor No. 25, Power
Monitor No. 24, HP mode
Monitor No. 22, E mode
Monitor No. 26, Propel
Monitoring Function
boost switch
switch.
switch.
speed switch.
Harness Check
--
--
--
--
Notes
Power boost function
HP indicator light on when
E indicator light on when
Check switches and
operates for 8 seconds
switch is on (down).
switch is on (down).
sensors in propel speed
after switch is pushed.
control circuit.
Description of
See Power Boost Control
See HP (High Power) Mode
See E (Economy) Mode
See Propel Motor Speed
9025
Operation
Circuit Operation in Group
Speed Circuit Operation in
Speed Control Circuit
Change Circuit Operation in
15
9025-25.
Group 9010-05.
Operation in Group
Group 9025-05.
6
9010-05.
Continued on next page
CED,TX08227,3177
1904JUN985/9
6-113
