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138
C
5
HAPTER
Troubleshooting
Cavitation,
excessive noise or
vibration of the
pump
Problem
Possible cause(s)
The hydraulic tank valve is
not fully open.
The oil level is low.
The oil is too thick.
There is air in the system.
There is particle
contamination.
Solution(s)
Fully open the hydraulic
tank valve.
Add oil to meet the
requirements.
Verify the oil in the system
is part of the
recommended lubricants
and/or change the oil. See
"Recommended lubricants"
on page 123 to find out
about the proper type of oil
to use. Refer also to
"Hydraulic Oil
Replacement Procedure"
on page 92.
Check all the connections
of hoses and pipes and
tighten them if necessary.
Change the oil return filter
and replace the oil in the
system. See "Hydraulic Oil
Replacement Procedure"
on page 92.
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