Owners manual

083116
1) Park vehicle on level hard surface. Engage emergency brake. Place blocks in front and behind
front wheels to prevent rolling. Observe all safety precautions and wear safety glasses.
2) Raise rear of vehicle allowing the axle to hang freely. Support the frame using safety jack stands.
3) Attach Upper Frame bracket (Item A) to the top of the SumoSpring (Item B) using two 3/8-16x3/4” serrated
flange hex bolts (Item E). Attach the Lower bracket (Item C) to the bottom of the SumSpring using one
3/8-16x3/4” serrated flange hex bolt (Item E) as in Diagram A above.
4) Insert two 3/8-16 x 4” carriage bolts (Item G) into the two square openings in the lower bracket (Item C)
in such a way that they straddle the factory spring-pack. Position the lower bracket so that the curved side
finger captures the factory u-bolt (see Diagram B below).
5) Secure the lower bracket (Item C) to the factory spring-pack using the u-bracket strap (Item D) the two
carriage bolts (Item G) two 5/16” washers (Item H) and two 3/8-16 Top-lock nuts (Item I).
Diagram B
6) Repeat steps three through five on the opposite side of the vehicle.
7) Jack up the axle until Upper Frame Bracket (Item A) is in correct position on frame. Drill the two
lower holes using a 7/16” drill bit exactly mid height on the frame as seen in Diagram C below.
8) Insert two 3/8-16 x 1.25” hex bolts, 5/16” washers, and 3/8” top lock nuts in lower holes as seen in
Diagram A.