6
MN-651
LoadLifter 5000
4. Loosely attach the upper bracket to the frame using the bracket holes and existing frame
holes as specified in fig. 7. Use a 3/8” bolt (M), flat washer (L), and nyloc nut (H) to attach
the upper bracket. Leave loose.
5. If the lower bracket hits the tops of the stock u-bolts and does not fit flush to the leaf
spring, or, the mounting distance is over 8 inches, use a spacer (O) to space the lower
bracket so it will clear the stock u-bolts (fig. 6).
6. Measure the X and Y distance (mounting envelope) (fig. 6). If this distance is less than 6½
inches, you will have to cut the tops of the u-bolts off and remove the spacers previously
installed. The lower bracket must sit flush on the leaf spring.
7. Adjust the brackets so they are parallel to each other and the X and Y distances are
equal. Do this by rotating the upper bracket and/or pushing the lower bracket forward
and backward.
8. Mark the frame using the two ½” holes in the lower bracket as a template.
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.
9. Remove the assembly and drill two ½” holes in the frame where marked.
ATTACHING THE UPPER BRACKETS
1. Set the assembly back on the spring and attach the upper bracket using one 3/8” bolt (M),
flat washer (L) and nyloc nut (H). Also, attach using two 1/2” bolts (U), four flat washers
(S) and two nyloc nuts (T). Torque the 3/8” bolt to 44 ft/lbs. Torque the 1/2” bolts to 95
ft/lbs.
ATTACHING THE LOWER BRACKETS
1. Position the lower bracket so that it is parallel with the upper bracket, and so that the air
spring is perpendicular to both. Do this by using the same method as before, but also
move the air spring in and out using the slots in the lower bracket (fig. 8).
Outside view of driver
side frame
Upper bracket
Driver side
Passenger
side
Use this hole on both
sides of the frame.
CAUTION
fig. 7
fig. 8
Move the air spring in the
slots of the lower brackets
to align and make sure
there is at least a thumbs
w i d t h o f c l e a r a n c e
between the uninflated
bag and the frame.
Summary of Contents for 57212
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