Allied Systems Allied H6G Series, Service Manual

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Section 1
1 - 1
General
Introduction
This service manual is for the H6G winch. The following
information is included in this manual:
Section 1. General includes operation descriptions
of systems and components as an aid for trouble-
shooting and repair.
Section 2. Troubleshooting lists common problems
and the possible causes and corrections.
Section 3. Maintenance provides a guide for peri-
odic maintenance, checks and adjustments.
Section 4. Repairs describes the removal, disas-
sembly, assembly, and installation of the winch.
Description
The H6G Winch is a Power Forward ( LINE-IN ) and Power
Reverse ( LINE-OUT ) winch. The winch is powered by
an internal hydraulic motor connected to the tractor hy-
draulic system. Oil fl ow and pressure are converted to
rotational energy by the winch motor. On the H6G, torque
is transmitted through a holding brake, a planetary speed
reducer and two gear reductions to the drum. Hydraulic
oil is supplied by the tractor mounted auxiliary pump cir-
cuit and utilizes oil, fi ltration and cooling provided by the
tractor circuit. Flow to the winch is controlled by a control
lever and electrical switches located at the tractor’s control
station.
The H6G winch FREESPOOL function permits the cable
to be pulled from the drum. The BRAKE-OFF function, as
an option, permits the cable to be pulled from the drum
under increased resistance.
The H6G winch has a maximum rated line pull capacity
of 266,880N (60,000 lb.) when there is one layer or less
of cable on the drum. When there is more than one layer
of cable on the drum, the line pull is reduced.
Figure 1-1 H6G Winch
1. Drum
2.
Access Cover for Motor and Winch Hydraulics
3. Plug to Drain Oil
4. Plug to Check Oil Level
6. Tie Rod
7. Fill Plug
9. Bearing Retainer for Intermediate Shaft & Freespool
drag
10. Right Side Drum Shaft
11. Drawbar (Not Shown)
12. Breather