42
1982-87 Chev/GMC C20, C30, K20 & K30 Under.
12-1/2"
WARNING: Most new trucks are
equipped with driver and passenger’s
side air bags. DO NOT remove, disable, or
reposition any sensory equipment related to
the safe operation of the air bags.
ALWAYS follow the vehicle manufacturer’s
recommendations for installing snowplowing
equipment.
Failure to comply with the above warning may
result in serious injury or death.
CAUTION: If your vehicle is equipped
with oversize tires, they may come
into contact with the undercarriage hanger
plates when turning the vehicle.
The problem may be resolved by setting the
steering stops on the vehicle. If this does not
correct the problem, the original tires will need
to be installed on the vehicle.
The recommended push beam height for all
undercarriage assemblies is 12-1/2" from the
center of the push beam to level ground. DO NOT
exceed 14" in height for any undercarriage.
1.
Begin the assembly by removing (if applicable) both 1/2"-13 x 2-1/2" bolts
with washers and nuts that attach each tow hook to the truck frame rail.
Discard all hardware.
2.
Next, remove both 7/16"-14 x 1-1/4" bolts and 3/8" lock washers from the
rear mount of each bumper support bracket.
Note: Each hole contains
a welded nut on the inside of the truck frame rail eliminating the need for
new hardware; however, top lock nuts and washers are provided should
the welded nuts be corroded or the threads have been damaged.
3.
Position the DRIVER’S SIDE HANGER PLATE on the inside of the truck
frame rail and in front of the sway bar crossmember.
Note: The bushings
should rest against the frame and the gussets should face the vehicle’s
tires.
Align the top and bottom rear bushings with the holes for the bumper
support bracket. Secure the plate with two 7/16"-14 x 4-1/2" bolts. If needed,
replace the welded nuts on the frame with the 7/16" washers and top lock
nuts provided.
4.
Align the three front bushings on the hanger plate with the holes for the
tow hook mounts located in the truck frame rail. Position one 1/2"-13 x 4-1/2"
bolt through each bushing and secure with one 1/2" washer and top lock nut.
5.
Repeat steps #3 & #4 to install the PASSENGER’S SIDE HANGER PLATE.
6.
Mount the PUSH BEAM to each hanger plate using two 1/2"-13 x 1-1/2"
bolts and top lock nuts at the front of the beam. The rear push beam
mount holes receive 1/2"-13 x 2" bolts.
Note: The proper height for the
push beam is approximately 12-1/2" from the ground to the center of the
push beam.
7.
Next, align the top hole on the PASSENGER’S SIDE HANGER PLATE
SUPPORT ARM with the top hole on the
inside
of the push beam. Fit the
support arm against the truck frame rail and mark the hole locations on
the frame. Drill two holes into the truck frame to properly mount the support
plate. Attach the support plate to the vehicle using two 1/2"-13 x 1-1/2"
bolts with washers and top lock nuts. Complete the same installation for the
DRIVER’S SIDE HANGER PLATE SUPPORT ARM. The support arm
mounts to the
outside
of the hanger plate. Align the top hole on the support
to the top hole on the hanger plate.
8.
Once all of the undercarriage plates have been positioned and the proper
push beam height is set, proceed to tighten all top lock nuts. Reference
the chart on page 4 for maximum bolt torque.
9.
Position the LIGHT TOWER into the accepting pockets on the push beam
and tighten using two 1/2"-13 x 1-1/4" Grade 8 YZ hex cap screws with
washers. Secure each bolt with a 1/2" top locking nut. Mount each PLOW
HEADLIGHT to the light tower with the hardware kit provided.
Complete the assembly by plugging the connectors from the lights into the
connectors on the vehicle wire harness.
1982-1987 Chevrolet/GMC C20/C30 & K20/K30
Undercarriage
www.storksplows.com
