Automobile Accessories User Manual

7901=600LB WDH KIT, 7902=800LB WDH KIT, 7903=1200LB WDH KIT, 7979=HEAD KIT
INSTALLATION / OPERATION INSTRUCTIONS
WEIGHT DISTRIBUTING HITCH SYSTEMS
7901, 7902, 7903, 7979 (DUAL SWAY CONTROL ATTACHMENT)
NOTE: When selecting a shank, select the shortest unit that provides clearance with all the
accessories on the tow vehicle and the trailer. This will maximize weight distributing and handling
characteristics.
DO NOT EXCEED TOWING VEHICLE MANUFACTURER’S LOAD RATINGS
INTRODUCTION
When a trailer is hitched to a tow vehicle, the tongue weight typically causes the rear of the tow vehicle to
lower and the front to raise. See Figure 1.
Figure 1
The purpose of a weight distributing hitch is to remove excessive weight from the tow vehicle’s rear axle
and distribute it to the front wheels and the trailer wheels. See Figure 2.
Figure 2
SETUP DIMENSIONS
1. Line up tow vehicle and trailer on level pavement, in a straight-ahead position, uncoupled.
2. For vehicles with air springs, air shocks or automatic leveling systems, check vehicle owner's manual.
Unless otherwise specified, level the vehicle with the vehicle loaded as it will be when towing. Deactivate
load leveling system before coupling trailer and adjusting spring bars.
3. Measure and record uncoupled height on front and rear wheel openings to pavement and level trailer
coupler height [See figure 3].
Figure 3
SPRING MAX. TONGUE MAX. GROSS TRAILER
BAR WEIGHT(LB) WEIGHT (LB)
RATING WHEN USED AS A WEIGHT "600" 600 12,000
DISTRIBUTING HITCH WITH SPRING "800" 800 12,000
BARS SHOWN: "1200" 1200 12,000
RATING WHEN USED AS A WEIGHT
CARRYING BALL MOUNT WITHOUT 7979 600 6,000
SPRING BARS:
F = _________________ R = _________________ H = ___________
7900 – 01APR05C PCN7753  2005 TOWING PRODUCTS, INC Litho in USA
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