Jerr-Dan MPL-60, Operation And Safety Manual, Page: 87 / 98

Section 6 - Maintenance
5376000278 6-17
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 re fi ll with
non-foaming type of hydraulic
oil (See lube chart)
Replace
fi lter
c. Re fi ll 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. Insu ffi cient 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