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OMAHA STANDARD
REVERSE MOUNT
E. INSTALL REAR HINGE ASSEMBLY (See figures 7 and 8)
NOTE: The installation instructions apply to an Omaha Standard rear hinge. If a rear
hinge other than an Omaha Standard rear hinge is used, proper installation of the rear
hinge is the responsibility of the installer.
THE DTH TRAILER HOIST REAR HINGE FITS 34” FRAME WIDTH ONLY!
Minimum mounting height of the 415/515/519 hoist is 6 1/2” and the 520/625/630 is 6 3/4”.
Assuming a 3/4” wood riser is used, minimum body longsill requirement is 6”. The “riser” is a
spacer or cushion strip, typically of hardwood, located between body and frame and attached to
top of each frame side.
1. Cut a 2 1/2” X 4” notch in frame rails. If a 3/4” riser is not used, adjust notch so that
hinge pivot pas is flush with top of riser.
NOTE: It is extremely important to locate near hinge as close as possible to rear axle
suspension to avoid bending frame. Notch frame no more than 5” from rear spring
hanger of rear axle.
CAUTION: YOU MAY HAVE TO DOUBLE OR REINFORCE FRAME IF REAR
HINGE IS NOT 5” OF REAR AXLE SUSPENSION SUPPORT. CONSULT
FACTORY IF IN DOUBT.
1. Set rear hinge into notches and clamp in place. Make sure rear hinge assembly is square and
level with truck frame and top of hinge pivot pad is flush with top of riser.
2. Weld into place with 3/8” fillet welds.
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