Jackco Body Straightener Model 857 (w/1.2 Ton Crane & Swivel Post) - Manual (Page 5)

HOOK-UP FOR SAG OR KICK-UP
With the car firmly supported on safety stands, place
the body straightener under the frame rail to be corrected.
Withe the use of underbody clamps, anchor both front
and rear end of the vehicle with chain onto the beam
of the body striaghtner. Place a bottle jack or portapower
on the Dozer beam under the low area to raise it. This is a basic a pulling and stretching operation.
With the car firmly supported on safety stands,
place the body straightener under the frame rail
to be corrected. Anchor the body straightener to
the frame or the pinch weld with underbody clamps.
HOOK-UP FOR MASH
HOOK-UP FOR MASH WITH SAG
Attach the anchor post of the body straightener to the underside of the car. near the rear wheels, using chain
or the underbody anchoring system. Place a block or jack between the beam and the car. Chain the front of
the frame to the pivot arm so that you pull the frame forward and downward simultaneously.
HOOK-UP FOR CENTER SWAY
36” Min
This configuration shows a common hook-up for removing the center sway from a ladder frame. This set up
can be used for other types of frame, but the frame should be tied together by the chain in order to move both
rail at the same rate. Please note the car should be well supported with cross tubes and safety stands, and
when attaching the frame with chains, it is a good idea to use short pieces of angle iron to pad the corners
where chains wraps around the frame.
4.