Shorelandr Disc Brake Lockout User Manual download pdf

Midwest Industries, Inc. Ida Grove, IA 51445 800.859.3028 www.shorelandr.com 0003175

REV A 12/14/04

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.

Trailer’s 5-prong wire harness

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 brakes. 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 normally 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 harness 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 and 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 vehicle 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 operat-

ing 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

1 2

Summary of Contents

Page 1 - Using a 4-prong Plug

Midwest Industries, Inc. Ida Grove, IA 51445 800.859.3028 www.shorelandr.com 0003175REV A 12/14/04Operating Trailers with Disc BrakesMan

Page 2 - REV A 12/14/04

Midwest Industries, Inc. Ida Grove, IA 51445 800.859.3028 www.shorelandr.com 0003175REV A 12/14/04WARNING: These brackets disable norm

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Shorelandr Disc Brake Lockout User Manual

Browse online or download User Manual for Trailers Shorelandr Disc Brake Lockout. ShoreLand'r Disc Brake Lockout User Manual

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