46
1988-00 Chev/GMC 1 ton hd 2wd Under.
1988-2000 Chev/GMC 1 ton heavy-duty 2wd
Undercarriage
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 both M12-1.75 x 35 (8.8 Gr.) bolts with
washers and flanged nuts from the rear mount of each bumper support
bracket. Discard all hardware.
2.
Next, position the DRIVER’S SIDE HANGER PLATE on the outside of the
truck frame rail and into the core support mount on the frame.
Note: The
cut-out in the hanger plate fits over the leaf spring clamp bolt.
Align the
holes from the bumper support bracket mount to those on the hanger plate
and secure using two 1/2"-13 x 1-1/2" bolts and 1/2" top lock nuts. Secure
two additional 1/2"-13 x 1-1/2" bolts and nuts opposite the bumper support
mount hardware.
3.
Complete the hanger plate installation by installing two 1/2"-13 x 1-1/2"
bolts with welded tabs through the middle mount holes. Attach a thin gauge
wire to each screw and feed the wire through the opening in the frame at
the spring shackle bolt. Pull the wire and hex cap screw through the bottom
mount hole in the frame and hanger plate. Secure the cap screw with a
1/2" top lock nut. Repeat the same procedure for the top mount hole.
4.
Repeat steps #2 & #3 to install the PASSENGER’S SIDE HANGER PLATE.
5.
Mount the PUSH BEAM to the front hanger plate mount holes using four
1/2"-13 x 1-1/2" bolts and top lock nuts.
Note: The proper height for the
push beam is approximately 12-1/2" from the ground to the center of the
push beam.
6.
Align the hole in the DRIVER’S SIDE PUSH BEAM SUPPORT ARM to
the mount hole on the frame in front of the vehicle shock mount. Secure
the support arm by “snaking” a 1/2"-13 x 1-1/2" bolt with welded tab through
the opening in the frame at the spring shackle bolt. Pull the wire and bolt
through the mount hole in the frame and support arm. Secure the bolt with
a 1/2" top lock nut. Next, align the holes in the support arm to the rear mount
holes on the hanger plate and push beam. Secure the plates using two
1/2"-13 x 2-1/4" bolts and 1/2" top lock nuts. Position a third bolt (1/2"-13
x 1-1/2") through the bottom mount hole in the hanger plate and push beam
and secure with one 1/2" top lock nut.
7.
Repeat step #6 to install the PASSENGER’S SIDE PUSH BEAM
SUPPORT ARM.
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.
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