TROUBLESHOOTING
Chart
The following troubleshooting chart
is
provided for
assistance
in
locating and correcting problems which are
most common. Many of the recommended procedures
must be done by authorized Bobcat
Service Personnel
only.
A
WARNING
Check
for
correct
function
after adjustments,
repairs
or
service. Failure
to
make correct
repairs
or
adjustments
can cause
injury
or
death.
W-2004-1285
PROBLEM CAUSE
No
drive
on
one side,
in
one direction.
1,2,3
,
4,5
No drive
on
one side
in
both directions.
2,5,6,7,8
The loader does not move
in
a straight line.
2,3,4,6,8,9,10
The hydrostatic system is overheating. 4,
11,12,13,14,15
The oil light comes
ON
16,17,18
KEY TO CORRECT THE CAUSE
1.
The hydrostatic system has a fluid leak.
2.
The steering linkage needs adjustment.
3.
The high pressure replenishing valve(s) are damaged.
4.
the shuttle valve in the hydrostatic motor is not working correctly.
5. The
valve plate seals
in
the hydrostatic motor are damaged.
6.
The hydrostatic pumps have damage.
7.
The final drive chain is broken.
8.
The hydrostatic motor has damage.
9. The tires do not have the correct tire pressure.
10. The tires are not the same size.
11
. The hydraulic fluid is not at the correct level.
12. The oil cooler has a restriction.
13. The temperature sending switch is not operating correctly.
14. The control
valve is not operating correctly.
15. The loader is not being operated at the correct RPM.
16. The sender is defective.
17. There
is
low charge pressure.
18. The charge
relief valve is damaged.
-3-1-
741, 742, 743, 743DS Bobcat Loader
Service
Manual
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