Section 6 - Maintenance
6-15
5376000207
HYDRAULIC PUMP
Problem
Cause
Solution
Oil foaming
a. Air leaking into suction line
b. Wrong kind of oil
c. Oil level too low
a. Tighten all connections
b. Drain and refill with
non-foaming type of hydraulic
oil (See lube chart)
Replace filter
c. Refill to proper level
Hydraulic oil leak
between P.T.O. and
pump
a. Defective shaft seal
a. Replace shaft seal
Pump leaks at front
and rear covers
a. Defective seals
a. Replace seals
WINCH FUNCTIONING IMPROPERLY
Problem
Cause
Solution
Winch screeches
during operation
a. Insufficient lubrication
a. Lubricate per lube chart
Winch will not pull load
or take in wire rope
a. Free-spooling device
not engaged
b. Sheared keys or broken
coupling
c. Hydraulic pump worn
a. Engage
b. Inspect or replace
c. Inspect and replace
Free-spool device
a. No air pressure
b. Insufficient air pressure
c. Defective pressure switch
d. Leaking air line
a. Turn truck on
b. Allow truck to run
c. Inspect and replace
d. Inspect and replace
Summary of Contents for JERR-DAN 20NGADF6T-LP
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