Trail Master Suspension TM104N CHEVEROLET/GMC 1/2 TON 4WD SUSPENSION LIFT KIT - Manual (Page 8)

8
TM104N
Revised
1.27.14
passenger side of the truck. On the
driver side, tighten up the bottom OEM
through bolts until there is about 1/16”
clearance between the cross member
and factory pocket sides. Place the
supplied 1/8” X 3 1/2” X 4” plate (PN 96-
1505) across the cutout at the rear of the
pocket, trim if needed and tack weld this
piece in place. These welds must be
sufficiently strong to withstand the
removal of the cross member for the next
steps.
3. Remove the rear cross member. Finish
welding the replacement plate to the
back of the pocket. Drill the remaining 3/8” holes through the OEM flanges on both
sides of the vehicle. It is important that these bolts are used. Do not skip this step.
4. Install the differential lowering shackle (PN 82-1446) into the OEM location with the
original nut and bolt. See Illustration 5.
5. Install the passenger side spacer bracket (PN 82-1447) to the OEM mount using the
original hardware. The bracket is slightly tapered. The narrow end of the taper is
oriented to the rear of the truck. Tighten OEM fasteners to specifications. Illustration
6.
6. Hang the differential from the shackle using the supplied 9/16” X 3 3/4” bolt, washers,
and nut. Insert the bolt from the center of the truck to the outside and install the
supplied torque strut as shown in Illustration 5. Install the supplied washer and lock
nut and tighten the assembly enough so that the strut can be moved without much effort
to complete step 33.
7. Attach the differential to the passenger side spacer bracket as
shown in Illustration
6. Use the supplied
9/16” X 1 3/4” bolts, 2
SAE washers, 2 USS
washers, and nuts.
The USS washers go
onto the slotted
aluminum flange of the
differential. At this
point leave the
fasteners slightly loose
until the main cross
member is back in
place and the torque
strut is positioned.
8. Rotate the differential
torque strut up and to
Illustration 4
Passenger side.
PN 15-11018
Front of vehicle
Illustration 5
Driver side.
1/2” X 1 1/4”
Front of vehicle.
PN 90-1476
PN 82-2202
9/16” X 3 3/4”
PN 82-1446
OEM bolt and nut