5
MN-651
LoadLifter 5000
4. Set the air spring on the lower bracket (C) aligning the two holes in the base of the air
spring with the two outer slots in the top of the lower bracket (fig. 4).
5. Attach the upper bracket to the assembly using flat washers (I), lock washers (J), and
hex head bolts (N). Tighten securely.
6. Loosely attach the lower bracket to the assembly using flat washers (I), lock washers
(J), and hex head bolts (N) (fig. 4).
The flange on the bracket must face the outside (tire-side) of the vehicle.
POSITIONING THE BRACKETS
1. There must be 6½ to 8 inches between the upper bracket and the lower bracket (distances
X and Y) to install the air spring (fig. 5). It is best to use the highest envelope available
between the upper and lower bracket.
Failure to mount the air spring at or higher than 6½ inches can result in the air spring
bottoming out.
2. If you are installing this kit on a 2008 or later model it will be necessary to drill the 3/8”
locating hole for locating the upper bracket to the frame rail. Use the template provided
at the end of this manual to properly locate the 3/8” hole, center punch and drill a 3/8”
hole through the frame.
BEFORE DRILLING, CHECK THE BACK SIDE OF THE FRAME FOR CLEARANCE ISSUES
WITH THE BRAKE LINES, GAS LINES AND ELECTRICAL LINES. ANY OBSTACLES WILL
NEED TO BE TEMPORARILY RELOCATED TO CLEAR THE AREA.
3. Set the air spring assembly on the leaf spring over the axle (fig. 6).
On some models it may be necessary to relocate a line bracket on the inside of the frame
on the driver’s side. Move the bracket back far enough to clear the upper bracket and
remount.
NOTE
NOTE
CAUTION
NOTE
fig. 5
X
Y
Distance must
be no less than
6½-8” and equal
on both sides
Optional spacer
to achieve proper
mounting height
Torque u-bolt
nuts to 16 ft/lbs
fig. 6
Bracket flange
must face the
outside of the
vehicle.
Contact overloads,
use u-bolt F
Upper and lower
brackets must
be parallel
Summary of Contents for 57212
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