ASSEMBLY STEP 2

Fasten the Rail to the Motor Unit

•Insert a 1/4"-20xl-3/4 bolt into the cover protection bolt hole on the back end of the rail as shown.

Tighten securely with a 1/4"-20 lock nut.

•Remove the two screws from the top of the motor unit.

•Attach spreaders to the U bracket by snapping them into place.

•Place the U bracket, flat side down, on the motor unit and align the bracket holes with the screw holes. Fasten with the previously removed screws.

•Align the rail assembly with the top of the motor unit. Slide the rail end onto the U-bracket, all the

way to the stops that protrude on the top and sides of the bracket.

HARDWARE SHOWN ACTUAL SIZE

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Lock Nut

Boit 1/4"-20 x 1-3/4

1/4"-20

To avoid serious damageto garage door opener, use only those screws mounted in the top of the opener.

Screws

Motor Unit

/ Sprocket

"U" Bracket

Boll

Cover

dook Spreader into Back Slots,

then Snap Tab

ON TOP AND SIDESinto Front SIot

OF BRACKET

"Lock Nut

ASSEMBLY STEP 3

Install the Idler Pulley

•Lay the chain/cable beside the rail, as shown. Grasp the end with the cable loop and pass approximately 12" of cable through the window. Allow it to hang until Assembly Step 5.

•Remove the tape from the idler pulley. The inside center should be pre-greased. If dry, regrease to ensure proper operation.

•Place the idler pulley into the window as shown.

•Insert the idler bolt from the top through the rail

and pulley. Tighten with a 3/8" lock washer and nut underneath the rail until the lock washer is

compressed.

•Rotate the pulley to be sure it spins freely.

•Insert a 1/4"-20xl-3/4 bolt into the trolley stop hole in the front of the rail as shown. Tighten securely with a 1/4"-20 lock nut.

Chain and

Cable

Idler

BottTrolley

Stop Hole

Locking Pliers

Boll

Trolley

Stop Hole

\

insidePulleyPulley _:

3/8"Lock I Washer_

_ Cable Loop

idler Pulley

_1 3/8" Nut

I

HARDWARE SHOWN ACTUAL SIZE

 

 

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Idler Boit

Bolt 1/4"-20 x 1-3/4))))))')')'))'))Lock

Nut 1/4"-20

Lock Washer3/8"

 

 

Nut3/8"

9

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Sears 139.53962SRT1, 139.53975SRT1 owner manual Install the Idler Pulley, Fasten the Rail to the Motor Unit
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139.53975SRT1, 139.53962SRT1 specifications

The Sears 139.53962SRT1 and 139.53975SRT1 are two sophisticated garage door opener models that have gained significant attention for their innovative features and technologies. These devices represent the cutting edge of convenience and security in residential garage systems.

One of the standout features of both models is the integrated MyQ technology. This allows users to control their garage doors remotely using a smartphone app, ensuring seamless access even when they are away from home. Whether you’re on vacation or simply running errands, the ability to monitor and control your garage door from anywhere adds an unmatched level of convenience and peace of mind.

Both the 139.53962SRT1 and 139.53975SRT1 come equipped with a powerful ¾ HP motor. This robust motor provides sufficient lifting power for standard-sized garage doors, ensuring efficient and reliable operation. The powerful motor is designed to handle heavy doors with ease, making it a suitable choice for a variety of residential applications.

Safety is a critical aspect of garage door systems, and these models excel in this area. They feature advanced safety sensors that detect obstructions in the door’s path. This means that if something is in the way as the garage door closes, it will automatically reverse, preventing potential accidents and injuries.

In addition to safety sensors, both models are equipped with rolling code technology. This system enhances security by changing the access code every time the remote is used, preventing unauthorized access and potential break-ins.

Another noteworthy characteristic of these garage door openers is their quiet operation. Thanks to a specially designed belt drive system, both models minimize noise during operation, making them ideal for homes with living spaces situated above the garage.

Installation is made simpler with the inclusion of detailed instructions and user-friendly components, allowing most homeowners to set up the system with minimal hassle.

Overall, the Sears 139.53962SRT1 and 139.53975SRT1 garage door openers combine powerful performance with advanced technology, safety features, and ease of use, making them top choices for anyone looking to upgrade their garage door system.
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