Midwest Industries, Inc. Ida Grove, IA 51445 800.859.3028 www.shorelandr.com 0003359
REV A 6/13/05
Page 10
RB Series
The RB -series rear bunk assembly is installed by placing
the bunk assembly mounting channel over the rear cross
member and securing in place with a 1/2” x 4-1/4” hex bolt
and lock nut. (See Diagram A). Note that it should be left
loose until the boat is placed on the trailer. Repeat on the
other roller arm assembly. Once the proper positions is
determined, it may be tightened.
The short stabilizer bunk is installed to the adjustable bunk
bracket on the front cross member with a 3/8” x 1” hex bolt
and lock nut. (See Diagram A, Detail B).
Trailer Adjustments
The adjustment of the trailer to your boat is very important
not only for the trailer, but also the boat. Failure to do so
may lead to potential failure or damage to either the trailer
or boat.
Adjust as follows:
1. Place the boat on the trailer so that the transom is located
at the rear of the support system. On a RB trailer, the tran-
som of the boat should be within 1-2” of the end of the bunk.
This gives you maximum support on the transom.
The rear cross member is adjustable forward or backward to
allow the trailer to be adjusted to various length boats. This
is accounplished by removing the pivot bolt on holds each
end of the rear pivot to the side frame. Reposition the rear
pivot arm into the other hole position pre-drilled in the side
frame. Re-attach the rear pivot to the side frame with the
bolts just removed. Tighten.
The wire harness for the three-light identification light must
be re-positioned where it comes from the side frame to the
rear pivot to eliminate slack, and sagging of the wiring.
Axle Adjustments
The amount of tongue weight on your trailer can be adjusted
as follows:
To lower the tongue weight, adjust the axle assembly for-
ward. To increase the tongue weight, adjust the axle back-
ward.
The distance that the axle assembly has to be moved will
vary because it is directly related to the weight and center of
gravity of the boat placed on it.
Best towing is achieved when the tongue weight is 5-7% of
the total gross load of the complete unit.
Note: Wire harnesses and brake line lines (if equipped with
brakes) will need care when moving the axle assembly.
Rear RB Support System
2. RB BUNKS. Position the RB bunk assemblies so they are
far enough apart to give your boat stability while transport-
ing. When the desired width is achieved, move the RB bunk
assemblies so that they are just to the outside of a strake.
The RB bunk assemblies need to be adjusted so that you
have a minimum of one to two inches of clearance between
the keel of the boat and the center cross member pads. This
will help center the boat when loading and unloading.
3. When the desired position is determined, tighten only
enough to hold the bunks from moving while the other ad-
justments are being made. Final tightening will be done at
the end of the adjusting process.
Front Support System
1. The keel of the boat must rest on the center of the front
keel roller system creating a three-point support system. The
keel roller system is designed to fit most boats without need-
ing any further adjustment, however there are considerable
differences in boat bottom designs and certain lines of boats
will require a riser. One riser is shipped inside the rear keel
guide roller bracket. This can be removed and bolted on the
bottom side of the keel guide roller bracket so it is between it
and the keel cradle itself. This will raise the front end of your
boat 3/4”. In the event that this is not enough, an additional
one can be added to the other keel guide roller bracket.
Once the height of the roller cradle assembly is established
the stabilizer pads can be adjusted. This is accomplished by
sliding the pad up against the boat bottom by hand. It is not
necessary that they carry much weight. They are designed
to just give your boat added stability while being towed. It
may be necessary to adjust the assembly up so that they
can be moved further apart giving additional support. Pull
the assembly away from the boat. Place the U-bolt that
holds the assembly to the cross member in a lower hole in
the bracket. Then push the assembly back against the boat.
Tighten in position.
Winch Post
1. Now that all other adjustments are complete the winch
post can be adjusted. Slide the winch post base backward
on the tongue until the bow roller comes in contact with the
boat. This bow roller needs to be positioned directly above
the boat bow eye to prevent your boat from moving forward
in the event of a sudden stop. It can be moved up or down
by removing the back bolt that mounts the winch head to the
base. When this bolt is removed, the head can be rotated
up or down to reach the desired height required to fit your
boat. Once in this position, align the closest pair of holes in
the brackets and reinsert the bolt just removed. Tighten. At-
tach the winch strap and crank winch tight. Attach the bow
eye safety chain into the bow eye of the boat as well. This is
just another level of protection to keep your boat and trailer
together as one unit.
Adjustments are now complete. Double check your boat for
fit. If desired fit has been achieved, tighten all fasteners that
may have either been left loose or have been loosened to
do the adjusting.
Note: All nuts and bolts must be tightened before towing.
The law requires that the white ground wire on both the
tongue wire harness and vehicle harness be properly
grounded to respective trailer and vehicle frames.
Re-check all fasteners on the complete trailer to make sure
they are all tight and ready for towing. All fasteners should
be periodically check before towing.
See your ShoreLand’r Owner’s Guide for further technical
information regarding your trailer and its components.
