Assembly Step 2

Install the Trolley on the T-rail

Attach the threaded shaft to the trolley with the lock washer and nuts as shown°

Lock Washer

5/16"

Inner Nut

5/16"

T_ey

Hardware Shown

Actual Size

 

©

Trottey

Lo_ W_he r

NuI

 

5/16"

=J16"-18

 

-As a temporary stop, insert a screwdriver into the hole in the front end of the T-rail.

Slide the trolley assembly along the rail to the screwdriver stop.

If trolley hits against any nuts on the T-rail, the bolts and nuts were attached from the wrong side and must be repositioned. Review Step 1.

Assembly Step 3

!

Fasten the T-rail to the Opener

 

Place the opener on packing material to protect the cover,, For convenience, put a support under the cable pulley brackeL

Remove the (2) 5/16"-18xl/2" washered screws mounted in the top of the opener.

Align the holes in the back section of the T-rail with the holes in the opener.

Fasten the rail with the (2) washered screws previously removed. Tighten securely.

Remember to use only these screws! Any other

screws will cause serious damage to the opener.

Insert a 5/16=-18x7/8" hex screw into the cover protection bolt hole in the T-rail as shown° Tighten securely with a 5/16" lock washer and nut.

NOTE: This screw prevents trolley over-travel.Keep a 2" minimum between the trolley and this screw when adjusting travel limits (see page 28).

Hardware Shown Actual Size

To fasten rail, use only those screws mounted

in the top of the opener. Any other screws will c_use seriou_ damage to the opener,

Hex Screw 5/16_-18x7/8

Cover

Protection

T-ran

(Back Section).

5/16"-18

Hex Screw

Nul

Lock Washer

5/16""18_718_

5/16"

5/16"

u UmHHHHmiin=,

Page 9
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Craftsman 139.53675SRT owner manual Assembly Step, Install the Trolley on the T-rail, Fasten the T-rail to the Opener

139.53675SRT specifications

The Craftsman 139.53675SRT is a versatile garage door opener designed to offer homeowners convenience, reliability, and a host of advanced features. Known for its ease of use and robust performance, this model has gained popularity in various residential settings.

One of the standout features of the Craftsman 139.53675SRT is its powerful 1/2 horsepower motor. This motor is designed to lift standard garage doors with efficiency and speed, providing a smooth opening and closing experience. Whether your door is lightweight or heavy, this opener can handle the task with minimal noise and vibration.

Incorporating advanced technology, the Craftsman 139.53675SRT features a rolling code security system. This enhances safety by changing the access code every time the remote is used, preventing unauthorized access. This technology ensures that you can trust your garage door opener to keep your home secure.

Another notable characteristic of this model is its compatibility with smartphone technology. The unit supports Smart Garage technology, allowing users to connect via their smartphones. Users can monitor and control their garage door from anywhere, adding an extra layer of convenience to everyday life.

Additionally, the Craftsman 139.53675SRT comes with a wireless keypad, which allows for keyless entry and makes it easy for family members or trusted friends to access the garage without needing to give out remotes. This keypad can be mounted outside the garage door, ensuring that anyone needing entry can do so without hassle.

Installation is made simpler with the detailed instructions provided, and the opener is designed to work with most standard garage door sizes. Additionally, the unit features a soft start and stop mechanism that reduces wear on the door and opener, extending the lifespan of both.

Safety is a priority with the Craftsman 139.53675SRT. The unit is equipped with safety sensors that detect obstructions in the door’s path, automatically reversing if anything is in the way. This feature helps to prevent accidents and injuries, particularly in households with children or pets.

In summary, the Craftsman 139.53675SRT is a reliable and feature-rich garage door opener that prioritizes convenience, safety, and technology. With its powerful motor, advanced security features, and smart connectivity, it has positioned itself as a strong contender in the market for garage door openers.