Section 1
1 - 1
General
Introduction
This service manual is for the H6H winch. The following
information is included in this manual:
Section 1. General
includes operation descriptions
of systems and components as an aid for
troubleshooting and repair.
Section 2. Troubleshooting
lists common problems
and the possible causes and corrections.
Section 3. Maintenance
provides a guide for
periodic maintenance, checks and adjustments.
Section 4.
Repairs
describes the removal,
disassembly, assembly, and installation of the winch.
Description
The H6H 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 hydraulic
system. Oil flow and pressure are converted to rotational
energy by the winch motor. Motor 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 circuit and utilizes
oil, filtration 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
FREESPOOL
function permits the wire rope to be
pulled from the drum. The
BRAKE-OFF
function, as an
option, permits the wire rope to be pulled from the drum
under increased resistance.
The H6H winch has a maximum rated line pull capacity
of 27,200 kg (60,000 lb.) when there is one layer or less
of wire rope on the drum. When there is more than one
layer of wire rope on the drum, the line pull is reduced.
Figure 1-1 H6H Winch
1. Drum
2.
Access Cover for Motor and Winch Hydraulics
3.
Plug to Drain Oil
4.
Plug to Check Oil Level
5.
Tie Rod
6.
Fill Plug
7.
Bearing Retainer for Intermediate Shaft
& Freespool
drag
8.
Drum Shaft
9. Drawbar
10. Breather
11. Nameplate
12. Serial Number Stamp
13. Warning/Maintenance/Load
& Wire Rope Safety Decals
3
4
5
8
10
10
5
6
8
9
11
11
12
1
6
1
12
13
Summary of Contents for H6H
Page 3: ......
Page 9: ...vi Notes...
Page 49: ...General 1 40 Notes...
Page 65: ...General 1 56 Notes Notes...
Page 71: ...Troubleshooting 2 6 Notes...
Page 78: ...Section 3 3 7 Notes...
Page 79: ...Service 3 8 Notes...
Page 84: ...Section 4 4 5 Intentionally Blank...
Page 92: ...Section 4 4 13 7 Remove the counterbalance relief manifold...
Page 96: ...Section 4 4 17 Intentionally Blank...
Page 98: ...Section 4 4 19 7 Separate the clutch hub and the pressure plate CLUTCH HUB PRESSURE PLATE...
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Page 132: ...Section 4 4 53 Notes...
