Service
3 - 2
Checks Before Operation
Check that the cable and hook are not worn or damaged.
Check that the periodic inspection and maintenance have
been done at the recommended operating hours. See the
Maintenance Schedule.
Checks During Operation
The Troubleshooting Charts in Section 2 can be used by
the operator to identify a problem with the winch opera-
tion. A trained service person is needed for additional
troubleshooting and repair that requires disassembly of
parts of the winch.
FREESPOOL Drag Adjustment (Fig. 3-3)
The preload on the bearings of the intermediate shaft
controls the resistance to rotation of the drum during
FREESPOOL operation. The resistance to rotation is
correct when the drum can be rotated by hand, but will
not rotate more than one-half revolution after the hand
is removed.
An adjusting setscrew is located in the center of the cover
for the intermediate shaft. This screw can be tightened or
loosened to adjust the preload on the intermediate shaft.
The jam nut will maintain the FREESPOOL setting. This
adjustment is normally only necessary if the winch has
had an overhaul.
a hammer to make sure the bearing is slid-
ing. Check resistance to rotation after each
adjustment.
Hydraulic System Pressure Checks
The hydraulic oil and filter(s) should be maintained as
indicated in the tractor Service Manual. If any problems
are found, they should be corrected before operating the
winch.
Preparation
1. These tests should be performed with a bare drum
(no cable) since the drum will rotate during the
tests.
Tractor engine must be shut OFF before dis-
connecting drum cable. Be careful when you
remove the cable from the drum. The end of
the cable can move like a compressed spring,
causing an injury when the ferrule is released
from the drum.
Always wear gloves when handling cable.
2. Start the engine and place the winch in LINE-OUT
to raise the oil temperature. Another way to elevate
the reservoir temperature is to hold the tractor blade
over relief. The oil temperature in the winch or tractor
reservoir must be at least 70°F (20°C).
3. Remove any dirt from the left side of the winch. Re-
move control valve access plate.
4. Stabilize engine speed at idle RPM for all tests.
5. Leave test plugs securely installed unless testing
that port.
6. After completing all pressure checks and making
the necessary adjustments ensure that all plugs and
hoses are securely installed.
7. Install side covers and tighten capscrews.
Pressure gauges
Six calibrated pressure test gauges are required to per-
form the hydraulic pressure checks: four 1000 psi (6895
kPa) and two 5000 psi (34,474 kPa) test gauges.
Figure 3-3 FREESPOOL Adjustments
1. Adjusting Nut
2. Jam Nut
Setting the preload on the intermediate shaft
too tight will cause bearing overload. Setting
the preload too loose will allow shaft to not
be parallel. Extreme care must be used when
adjusting FREESPOOL drag. Determine the
correct preload by starting with the preload
too loose, and gradually increase the preload
until the correct resistance to rotation is
achieved. Increase the preload by turning the
adjusting screw by a maximum of 1/6 rotation
(60 degrees), and striking the housing with
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