MHD56114 - Edition 4
9
INSTALLATION
Prior to installing the winch, carefully inspect it for possible
shipping damage.
Winches are supplied fully lubricated from the factory. Check oil
levels and adjust as necessary before operating winch. Refer to
“LUBRICATION” section for recommended oils.
CAUTION
• Owners and users are advised to examine specific, local or
other regulations, including American National Standards
Institute and/or OSHA Regulations which may apply to a
particular type of use of this product before installing or
putting winch to use.
Mounting
Refer to Dwg. MHP0124 on page 9.
Care must be taken when moving, positioning or mounting the
winch. Ensure that the winch, when lifted, will be properly
balanced. Determine the weight of the winch by referring to the
“SPECIFICATIONS” section. Lift the winch 3 to 4 inches (75 to
100 mm) off the ground. Verify winch is balanced and secure
before continuing lift. Mount the winch so the axis of the drum is
horizontal and the motor control valve pad is not more than 15° off
top vertical center. If the winch is to be mounted in an inverted
position, the motor case must be rotated to position the control
valve pad at the top and adequate clearance must be provided for
control valve operation.
1.
The winch mounting surface must be flat and of sufficient
strength to handle the rated load plus the weight of the winch
and attached equipment. An inadequate foundation may
cause distortion or twisting of the winch uprights and side
rails resulting in winch damage.
2.
Make sure the mounting surface is flat to within 0.005 inch
(0.127 mm) per inch of drum length. Shim if necessary.
Refer to Table 1 on page 9.
3.
Mounting bolts must be 3/4 inch-NC (18 mm) Grade 8 or
better. Refer to Table 2 on page 9. Use self-locking nuts or
nuts with lockwashers.
4.
Tighten mounting bolts evenly and torque to 380 ft lbs (515
Nm) for dry thread fasteners. If the fasteners are plated,
lubricated or a thread locking compound is used, torque to
280 ft lbs (380 Nm).
WARNING
• Winch frame material is not suitable for welding. FA2.5A
winches must only be mounted by bolting to a suitable
foundation. Do not attempt to mount the winch by welding to
a foundation structure. Refer to warning label part number
71270813.
5.
Maintain a fleet angle between the lead sheave and winch of
no more than 1-1/2°. The lead sheave must be on a center line
with the drum and, for every inch (25 mm) of drum length, be
at least 1.6 feet (0.5 metre) from the drum. Refer to Dwg.
MHP0498 on page 11.
6.
Do not weld to any part of the winch.
(Dwg. MHP0124)
Table 1 - Mounting Tolerances
Drum Length
Mounting Surface Minimum Flatness
inch
mm
7
0.04
0.89
13.5
0.07
1.72
20
0.10
2.54
24
0.12
3.05
Table 2 - Mounting Bolt Hole Dimensions
Dimension
Drum Length (inches)
7
13.5
20
24
7
13.5
20
24
“A”
in.
9.54 16.04 22.54 26.54 12.31 18.81 25.31 29.31
mm 242
408
573
674
313
478
643
744
“B”
in.
15
mm
381
“C”
in.
0.81
mm
20.6
WARNING
Welded mountings
can fail.
Can cause severe
injury or death.
Do not weld, braze or
solder to winch.
71270813
