Pro Series 49570 User Manual

INSTALLATION INSTRUCTIONS

49568

Heavy Duty Round Bar Adjustable

Weight Distributing Hitches

PLYMOUTH, MI.

DEALERS: Give these instructions to your customers. SIZING WD AND TRAILER HITCH SYSTEMS

1. Refer to provided Consumer Information to weigh loaded trailer tongue to determine proper system size.

2. Chose a system with tongue rating at or above the actual trailer tongue weight

3. Tongue rating of trailer hitch must meet or exceed measured tongue weight of trailer. OEM hitches may not be rigid enough for tongue weight and may need to be replaced (too much flex and won’t carry load).

4. Total trailer gross weight rating must never exceed tow vehicle rated gross tow rating. INITIAL SET-UP

1. Line up tow vehicle and trailer on level pavement,

in straight-ahead position, uncoupled.

2. Level the trailer and measure and record the distance from the ground to the top of the coupler. (Fig.1).

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).

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

4. Attach hitch ball to the ballmount (A). Standard height hitch balls with 1-1/4" shanks are supplied with lock washers and nuts (If you must use a 1” shank ball, use the provided 58184 bushing (B) to reduce hole size in ballmount (A) to 1”). Always use a lock washer placed between the ballmount and 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 draw bar (C). Extended bumper guards, pickup truck "caps", or rear mounted spare tires can limit turn angles unless a longer bar is used. Individual draw bars (C) are available in various sizes.

6. Insert the draw bar (C) into the hitch box and install a pull pin (D) and spring clip (E). Draw bar may be used in either the up or down position (see Fig. 2).

NOTE: The ball height should be greater than the coupler height by approximately 3/4 to 1” (measured in step 2) to compensate for vehicle squat. For vehicles with air springs, air shocks or an automatic leveling system, check vehicle owners manual. Unless otherwise specified, level the trailer with the vehicle loaded as it will be when towing before setting ball height and attaching trailer.

49569 49570

Highest Position Lowest Position

Fig. 1

Fig. 2

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

7. Position the ballmount on the draw bar so that the ball will be approximately 3/4” higher than the coupler when in the center of its tilt adjustment. Insert 3/4 X 4 1/2" bolt (F) through the lower hole in the ballmount and install 3/4” lock washer (G) and 3/4” nut

(H). Rotate ballmount up to approximately the center of the tilt adjustment and install one adjustment washer (J) on 3/4 x 5 1/2“ bolt (K) and insert bolt in upper slot in the ballmount. Note: The adjustment washer hole is not on center and can be rotated 180°

for maximum head adjustment or half adjustment steps (see below). Install the second adjustment washer (oriented the same as

the first), lock washer, and nut on the other side. Torque the 3/4 nuts (K) to 300 ft-lbs (If large enough torque wrench is not available, torque nuts to 150 ft-lbs, then turn nuts an additional 1/4 turn - DO NOT lubricate the threads).

Adjustment washer hole oriented vehicle forward: Adjustment washer hole oriented vehicle rearward: Max head tilt rearward Max head tilt forward

OPTIONAL SHIM KIT

Use the shim provided when needed to fill any gap between the Weight Distributing Head shown below and the hitch bar used in the particular application.

It is easier to install the shim from the top down as shown below. In doing so, you will encounter one of three scenarios:

1. Shim will go all the way down to line up with the bottom hole. If this is the case, use the entire shim in

the gap.

Note: It is conceivable that in some rare combinations, two shims could be used. In these cases,

contact Customer Service at 800-632-3290 or 800-428-7303 for a free additional shim service kit #58207.

2. Shim will not begin to fit between the head and hitch bar. If this is the case, discard shim and continue

installation. The existing gap is acceptable

3. Shim will not go in far enough to reach bottom hole.

If this is the case, cut shim in half and use only the top half for the top bolt. Discard bottom half of shim.

INITIAL HOOK-UP NOTE: Car and trailer should be loaded and ready for travel before final leveling.

1. Pick a reference point on the front wheel well. Measure and record distance to pavement.

Front wheel well to pavement ___________________

2. Attach chains to spring bars using U-bolts, flat washers, and locknuts. Let 2-3 threads protrude below locknut. Chain must not

bind.

STANDARD SPRING BAR

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