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49585IN-15946 REV G  

©2007 TOWING PRODUCTS, INC 

6.

Raise trailer tongue and rear of vehicle with jack.  Lower yoke of snap up bracket until it is parallel with the ground, and 
slip the closest link over the hook (If there are less than 4 links between hook and u-bolt adjust ballmount angle 
rearward, and repeat procedure).  With the snap up bracket handle over the yoke, raise until yoke has passed “over-
center”.  Slide the safety pin through the small hole to lock the yoke in place.  Repeat for other side. 
 

7.  

Lower jack. Re-measure front wheel well reference point. The front wheel well height should be equal to or lower than 
the original measurement.  If the front wheel well height is higher than originally measured, reduce the number of links 
between the yoke hook and spring bar (4 links min.)

 

and recheck the wheel well measurement.  If the front wheel well is 

lower than originally measured, increase the number of chain links between the yoke hook and spring bar and recheck 
the wheel well measurement.  If the original wheel well height is not achievable, it is preferred that the wheel well height 
is lower after the spring bars are loaded.  If there are no more chain links for adjustment, the head assembly  must be 
tilted forward.  The trailer must be uncoupled and the upper bolt removed from the head assembly. The head is then 
pivoted up as appropriate. Reassemble and recheck the wheel well height.  

 
 

 Check to see if trailer is level, if not, you may need to re-adjust ballmount angle and / or position. 

 
 

 Check to see that there is room for the spring bar and chain to move freely when turning a corner. 

 
 

 NOTE: 

Some surge brakes will not work with weight distributing hitches.  Check with manufacturer.  Do not use  

  

sway control with surge brakes.   

 
LUBRICATION

 

1. 

Lubricate the ballmount sockets and spring bar trunnions to prevent rapid wear.  When hooking-up, place one drop of oil 
on the top and a second drop on forward side of upper trunnion.  Place a third drop on the rear side of lower trunnion 
before inserting trunnion into ballmount.  Use a heavy oil or grease.  Don't forget to lubricate the hitch ball with one or 
two drops also.  Trunnions should be lubricated each towing day.  Lubricate lower trunnions with one drop at contact 
point between trunnion and lower socket.  Excess oil, dirt, and grit should be wiped out whenever trailer is uncoupled. 

 

SURGE BRAKES

 

 

Some surge brakes will not work with weight distributing hitches.  CHECK TRAILER AND/OR SURGE BRAKE 
OPERATING INSTRUCTIONS FOR ANY SPECIAL REQUIREMENTS REGARDING WEIGHT DISTRIBUTING 
HITCHES.  Do not use sway control with surge brakes. 

 
 

Summary of Contents for Professional Series

Page 1: ...re and record the distance from the ground to the top of the coupler Fig 1 page 2 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 rati...

Page 2: ... adjustment Insert 3 4 X 4 1 2 bolt F through the lower hole in the ballmount and install 3 4 lockwasher 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 ...

Page 3: ...bove Set the bottom pin of the trunnion into the lower socket of the ballmount and slide the pin into the top slot of the ballmount The spring bar will have to be rotated outward approximately parallel to the vehicle bumper to insert the top trunnion pin Repeat for the other side The spring bars will fit on either side as they are not made right or left handed 5 Position the snap up brackets on tr...

Page 4: ...ead assembly must be tilted forward The trailer must be uncoupled and the upper bolt removed from the head assembly The head is then pivoted up as appropriate Reassemble and recheck the wheel well height Check to see if trailer is level if not you may need to re adjust ballmount angle and or position Check to see that there is room for the spring bar and chain to move freely when turning a corner ...

Page 5: ...hifting Tongue weight should be about 10 15 percent of the gross trailer weight for most trailers Too low a percentage of tongue weight will often produce a tendency to sway Excess weight on the tongue can also lead to sway and damage hitch and or tow vehicle SWAY CONTROLS A sway control can help minimize the affects of sudden maneuvers wind gusts and buffeting caused by other vehicles Use of a sw...

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