Brake service & maintenance of braking systems, Backing up a trailer with disc brakes, Brake service and maintenance – ShoreLand'r Powersports Trailer 2008 User Manual
Page 11

Midwest Industries, Inc.
Ida Grove, IA 51445
800.859.3028
www.shorelandr.com
0003513
Page 11
REV B 4/11/2008
BRAKE SERVICE & MAINTENANCE OF
BRAKING SYSTEMS
ShoreLand’r®uses only a hydraulic surge brake system with a
hydraulic surge actuator on their Powersports trailers. This system
has an actuator on the tongue of the trailer that attaches to the tow
vehicle. It is designed that when the brakes are applied on the tow
vehicle the trailer will push into the tow vehicle. As this load is ap-
plied to the actuator a master cylinder inside the actuator generates
pressure on the brake fluid that is then supplied to the wheel cylin-
ders of the drum brakes or into the calipers on disc brake systems.
As this brake fluid is supplied the pressure is applied to the brake
shoes or pads causing the brakes to apply on the trailer.
BACKING UP A TRAILER WITH DISC BRAKES
OPERATING TRAILERS WITH DISC BRAKES
Many ShoreLand’r
®
trailers come with disc brakes as standard
equipment. This system is designed to brake in both forward and
reverse, therefore the brakes must be disengaged to back up.
IMPORTANT: To properly operate this system the tow vehicle
MUST be equipped with a matching 5-prong trunk harness to
power the solenoid. Otherwise, a lockout key must be used (this
key is provided with your actuator).
TRAILER’S 5-PRONG WIRE HARNESS REQUIREMENTS
Required 5-prong trunk harness on tow vehicle.
HOW THE SOLENOID LOCKOUT WORKS
The disc brake actuator has a lockout solenoid that is activated by
the tow vehicle’s back-up lights. When the vehicle is put in reverse,
the solenoid redirects the brake fluid back into the actuator reservoir
rather than applying pressure to the brake calipers. Then, when the
tow vehicle is put into park, neutral or a forward gear the solenoid
returns to its original position allowing the brakes to function nor-
mally during travel.
ALTERNATIVES TO THE 5-PRONG HARNESS
As stated above, the best way to operate the solenoid is with a
5-prong wire harness on the tow vehicle that matches the wire har-
ness plug of the trailer. This allows the solenoid to be plugged in
at the same time the trailer lights are connected for towing. If a
5-prong harness is not available there are a number of short-term
fixes that will allow you to use the trailer.
UFP ACTUATOR LOCKOUT KEY
UFP actuators are shipped with a lockout key attached to the side
of the actuator on a short cable. The round end of the key is simply
inserted in the slot on the side of the actuator. When the key is in
the slot, the trailer can be backed without the brakes engaging.
When the trailer is moved forward, the key will fall out of the slot.
The key fits very loosely to insure that it will not remain in the slot
after backing. Leaving the lockout key in the slot would disable the
brake system during normal use, which could result in a serious
accident.
ADDING A 5TH WIRE & PLUG
A separate wire and plug can be wired into the tow vehicle back-up
lights that can be plugged into the fifth wire of the trailer harness.
The solenoid will work as described above, however this new wire
will have to be plugged into the trailer harness separately.
USING A 4-PRONG PLUG
If the tow vehicle is equipped with a 4-prong plug, the trailer can
still be moved using the solenoid to lock out the brakes. Though not
ideal, this is acceptable for backing trailers in either a storage yard
or a shop environment where the tow vehicle is not the normal ve-
hicle that will be used with the trailer. Before backing, simply unplug
the trailer’s 5-prong harness from the tow vehicles 4-prong trunk
harness. Turn the harness 90 degrees and plug the blue wire on
the 5-prong harness into the brown wire on the 4-prong harness. To
activate the solenoid, turn on the tow vehicle’s lights. The power for
operating the running lights will operate the solenoid, disengaging
the brakes so the trailer can be backed up.
UFP ACTUATOR WITH LOCKOUT KEY
Turn plug to connect the blue wire to the brown wire.
BRAKE SERVICE AND MAINTENANCE
WARNING: Trailer brakes must be maintained in good working
conditions. Loss of adequate braking could result in serious in-
jury or property damage.
The braking systems are covered in much greater detail in the
Brake Information Packet that pertains to brake systems and
brake components only. Contact your local dealer or contact
Shoreland’r
®
directly to receive a copy of this information.
This trailer is equipped to meet applicable U.S. Federal safe-
ty standards. Check local and state requirements regarding
brakes and any additional equipment that may be required.
Any modifications or additions including load equalizing
hitches, without written factory consent: usage in an abnor-
mal manner including overloading voids all manufacturers
warranties and liability.