TROUBLESHOOTING
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
The hydraulic system will not operate.
1,2,3
Slow hydraulic system action.
1,3,4,5,6
Hydraulic action is not smooth.
1,4,5,6,7
Lift arms go up slowly at full engine RPM.
1,3,4,5,6,7,9
The lift arms or
Bob-
Tach
will move the pedal
in
neutral position.
4
The lift arms come down with the pedal
in
the neutral position.
4,9,10,11
KEY TO CORRECT THE CAUSE
1.
The fluid level is not correct.
2.
The pedal linkage is disconnected.
3. The hydraulic pump has a defect.
4.
The pedal linkage is not adjusted correctly.
5.
Relief Valve is not at the correct pressure.
6.
Suction leak
on
the inlet side of the hydraulic pump.
7.
Fluid is cold.
8.
Using the loader for more than its rated capacity.
9.
Internal leak at the lift cylinder(s).
10. External leak at the lift cylinder(s).
11
. Leaking seal
in
port relief valve, lift section.
-2-1-
741, 742, 743, 74305 Bobcat Loader
Service
Manual
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