Document Number: 0003651
Page 7
S H O R E S T A T I O N
L A K E F R O N T S Y S T E M S
How the Winch Brake Mechanism Operates
This unique brake mechanism includes a feature that holds your platform in the raised position when the grip
on the hand wheel is released. It is designed to hold the load applied to the lift at any position the hand wheel
is released. It is up to you to maintain the brake system to make sure that it is always operating properly.
Brake System Assembly Instructions
The brake mechanism consists of several component parts that must be assembled in the following manner for
the brake system to operate properly.
1. The drive shaft has a flat disc that is welded to the shaft in a permanent location.
2. The disc brake pad is placed on the drive shaft and slid against the welded flat disc.
3. The clutch sprocket is placed on the drive shaft next. Note that there are notches on the outer diameter of
the clutch sprocket. The clutch dog must be raised so that the outer diameter of the clutch sprocket can be
slid under the end of the clutch dog so that the notches on the outer diameter and the end of the clutch dog
will engage each other during operation.
4. Slide a flat oilite washer onto the drive shaft until it contacts the clutch sprocket installed in step 3.
5. Note that there should be a small amount of grease applied to the threads on the inside of the wheel hub
before you attempt to assemble it on the drive shaft. A small amount is necessary to allow the threads to
move freely against each other but care must be taken not to over grease.
WARNING
: Excess grease will have a tendency to work itself onto the brake disc assembled in step 2. Once
grease is applied to the disc brake surfaces, normal use of the winch will cause a glazing to form on the disc
surface, thus reducing the amount of friction that can be generated with the braking system leading to
premature failure.
6. Place the large hand wheel onto the end of the drive shaft so the center hub of the wheel is aligned and
positioned on the end of the drive shaft. Apply light pressure inward on the center of the hand wheel as you
rotate the hand wheel clockwise. The large acme threads inside the hub of the hand wheel will thread onto the
acme threads of the drive shaft. Rotate the hand wheel until it is fully threaded onto the acme threads and the
center hub is against the flat washer installed in step 4.
7. Place on
a 5/8” flat washer until it contacts the step in the shaft between the standard threads on the end
of the shaft and the acme threads.
8. Thread on the 5/8” cap nut and tighten it against the flat washer just installed. This will prevent the hand
wheel from threading off of the acme threads when the hand wheel is turned counterclockwise to lower the
lift platform.
9. Assembly is complete.
Winch and Brake Mechanism Operation
How the Brake Mechanism Operates
RAISING THE PLATFORM
1. To raise the lift platform, rotate the large hand wheel clockwise. As the hand wheel is rotated the hub in
the hand wheel will thread itself onto the acme threads of the drive shaft. Once it has threaded itself onto the
threads far enough so that the clutch sprocket and disc brake pad are fully compressed against each other,
the complete brake system will rotate with the drive shaft.
2. As the hand wheel is continued to be turned clockwise, you will hear a definite clicking sound. This click is
created by the clutch dog engaging the notches on the outer diameter of the clutch sprocket. This will
continue to happen until you stop rotating the hand wheel.
3. When the lift platform is at the desired height, stop turning and release the grip on the hand wheel. The
brake system is now engaged if operating properly and will hold the platform in its raised position.
LOWERING THE PLATFORM
1. To lower the platform, rotate the hand wheel counterclockwise. When you do, the first thing that happens
is the hub inside the hand wheel will thread itself off of the acme threads on the drive shaft. When it does, the
