Draw-tite 7902 TRUNNION BAR WT.-DIST. User Manual download pdf

INSTALLATION INSTRUCTIONS

Trunnion Style

Weight Distributing Kits

PLYMOUTH, MI.

HIGH-PERFORMANCE BALLMOUNT

*D not included in all kits

**B not included in all kits

INITIAL SET-UP

1. Line up tow vehicle and trailer on level pavement, in straight-ahead position, uncoupled.

Level the trailer and measure and record the distance from the ground to the top of the ball socket (X dimension Fig 1)

Level

the

trailer

and

measure

and

record

the

distance

from

the

ground

the

top

the

ball

socket

dimension

Fig

3. Select a hitch ball with a diameter that matches the trailer coupler size. The three most common sizes are 1-7/8", 2",

and 2-5/16". Select ball with 1-1/4" or 1" threaded shank that is V-5 rated equal to or greater than trailer gross vehicle

weight rating (GVWR). A thin jam nut (.72” thick) should be used on standard ballmount to prevent interference with

spring bar trunnion.

WARNING: Raised balls usually have reduced load ratings. Ball rating MUST equal or exceed trailer GVWR.

4. Attach hitch ball to the ballmount (G). Standard height hitch balls with 1-1/4" shanks are supplied with lockwashers and

nuts (If you must use a 1” shank ball, use bushing 58184 (B) to reduce hole size in ballmount (G) to 1”). Always use a

lockwasher and place washer next to nut. Unless otherwise specified by ball manufacturer torque ball nut to 450 ft/lbs for

1-1/4" nut, 250 ft/lbs for 1" nut.

5. Some installations may require a longer hitch bar (D). Extended bumper guards, pickup truck "caps", or rear mounted

spare tires can limit turn angles unless a longer bar is used. Individual hitch bars (D) are available in various sizes.

I h hi h b (D) i h hi h b d i ll ll i Pl b ll (G) hi h b d d

nsert t

(D)

nto t

ox an

nsta

a pu

ace

mount

(G)

onto

ar an

move up or

own

for proper height. Hitch bar may be used in either the up or down position (see below).

NOTE: Ball height should be greater

than coupler height (measured in step 1) to compensate for vehicle "squat”

(approximately 3/4” to 1”).

HIGHEST POSITION

LOWEST POSITION

For Installation Assistance or Technical Help, Call 1-888-521-0510

1 2 3 4

INSTALLATION INSTRUCTIONS 1

Summary of Contents

Page 1 - INSTALLATION INSTRUCTIONS

INSTALLATION INSTRUCTIONSTrunnion StyleWeight Distributing KitsPLYMOUTH, MI.HIGH-PERFORMANCE BALLMOUNTD*D*JEB**KBK*D not included in all kits**B not i

Page 2

For vehicles with air springs, air shocks or automatic leveling system, check vehicle owners manual. Unless otherwise specified, level the vehicle wit

Page 3

INITIAL HOOK UP NOTE: Car and trailer should be loaded and ready for travel before final leveling.1. Pick reference points on front and rear wheel wel

Page 4

WARNINGS: LOADED BALL HEIGHT SHOULD NEVER BE GREATER THAN UNCOUPLED BALL HEIGHT. Front wheel overload and loss of rear wheel traction can result, and

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Draw-tite 7902 TRUNNION BAR WT.-DIST. User Manual

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