Winch Assembly - Allied Systems H6H Service Manual

Repairs

- Winch Assembly

Winch Assembly
All components should be inspected for wear or damage
as they are removed. Refer to Figure 4-8, Visual Inspection.
All seals that were removed should be replaced during
assembly. Carefully inspect all bearings that have been
removed. Used bearings often appear satisfactory, but
ITEM
Brake Assembly Check for cracked or broken belleville/coil
springs.
Inspect housing and covers for leakage or
damage.
Check the rotor discs for wear, distortion,
or damage. The discs should be free of
hydraulic oil.
Check the brake/motor shaft seals for
leakage into the brake housing.
Inspect the brake/motor shaft for wear or
damage.
Check that the stator discs are flat, free of
large blue areas (caused by overheating)
or damaged surfaces.
Inspect the piston for damage. Make sure
the seal groove and sealing surfaces are
in good condition.
Planetary Speed Check the housing for leakage or damage. Repair or replace assembly.
Reducer
Check output shaft bearing end play.
Inspect sun gear and carrier assembly for
damage or wear. Sun gear should spin
freely in carrier assembly.
Winch Motor Inspect motor shaft seal for wear or
damage.
4 - 24
Figure 4-8 Visual Inspection -1
INSPECTION REQUIREMENTS
may fail when placed under a load. When in doubt, it is
recommended to install a new bearing. Any component
that indicates excessive wear or damage should be
replaced. The following reassembly and installation
sequence assumes a complete winch overhaul.
CORRECTIVE ACTION
Replace springs if cracked or broken.
Replace component if sealing surfaces or splines
are damaged.
Replace the rotor discs if the wear grooves are
worn away, the discs are burned, damaged,
warped, or exposed to oil. Brake cleaner may
be used to clean dust from the discs but will not
remove impregnated oil.
Replace damaged seals.
Replace a damaged shaft.
Replace damaged stator discs.
Replace a damaged piston. Always replace the
piston seals when the brake is repaired.
End play is 0.000-0.006". End play is adjusted
using the appropriate thickness retaining ring.
See parts manual.
Replace assembly.
Note: A leaky motor shaft seal will contaminate
the brake with oil and the brake will likely require
service. Replace seal.
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