Assembly Section: Pages 8 - 11

To avoid installation difficulties, do not run the garage door opener until instructed to do so.

Assembly Step 1

Assemble the T-rail &

Attach the Belt Pulley Bracket

Place the 3 T-rail sections on a flat surface for assembly. The end sections are identical. Make sure the "arrow label" on the center section is pointing toward the door.

Insert the carriage bolts so the square bolt necks seat in the square holes in the T-rail end sections and pass through the round holes in T-rail center section. Assemble lock nuts, ensure alignment and tighten.

Make sure bolt necks are seated in the square holes

and rails are aligned before

 

you tighten lock nuts.

 

(See right and

wrong

 

views). Improper

 

assembly can cause

 

jerky

trolley

operation,

 

noise

and/or

nuisance

 

door

reversals.

Right

Wrong

 

 

 

T-RAtL

BACK

 

 

 

(TO OPENER)

 

 

 

T-rail

 

 

1/4"

(End Section)

 

 

Lock Nut

 

Brace

If T-rail is not assembled

 

EXACTLY

as shown,

 

trolley will

not travel

 

smoothly

along length of

 

rail or it will hit against

Brace

 

 

the nuts.

\

T-rail

\

Carriage Bolt

,

_

1/4"-20X1/2"

T-rail

(End Section)

Belt pulley bracket

attaches to FRONT

Square Carriage

END of T-raU

Bolt Holes

T-RAIL FRONT

(TO DOOR)

Position the belt pulley bracket on the front end of the

T-rail as shown. Fasten securely with the hardware shown.

Hex Screws

5/16'-18x7/8"

Hardware Shown Actual Size

©

Lock Nut

Carriage Bolts

1/4"-20x7/16"

1/4"-20xl/2"

Hex Screw

Nut

Lock Washer

5/16"-18x7/8"

5/16"-18

5/16"

 

Q

 

When

 

 

tightening the

 

 

screws, be

 

 

sure to keep

,,r.o.O-

 

bracket parallel

 

Otherwise, the

 

 

 

to the rail.

 

 

 

rail may bow

 

Right

Wrong

when opener is

 

 

operated.

Page 8
Image 8
Craftsman 139.53664SRT2 Assembly Section Pages 8, Assembly Step, Assemble the T-rail Attach the Belt Pulley Bracket

139.53664SRT2 specifications

The Craftsman 139.53664SRT2 is a highly regarded garage door opener that combines reliability, advanced technology, and user-friendly features. Designed for residential use, this model stands out due to its robust functionality and ease of installation, making it a popular choice among homeowners.

One of the standout features of the Craftsman 139.53664SRT2 is its powerful motor. It boasts a 1/2 horsepower motor capable of lifting standard residential garage doors with ease. This strength means reliable performance even in adverse weather conditions, ensuring that your door operates smoothly and efficiently each time.

Another key technology in this model is the Smart Control system. The Craftsman 139.53664SRT2 allows users to operate their garage door remotely, thanks to its built-in Wi-Fi connectivity. By connecting to a smartphone app, homeowners can monitor and control their garage door from anywhere, providing added convenience and security. This feature also enables users to receive alerts and notifications, ensuring they are always informed about the status of their garage door.

Security is a top priority for the Craftsman brand, and the 139.53664SRT2 features advanced security measures, including rolling code technology. This technology generates a new access code each time the remote is used, effectively preventing unauthorized access and ensuring that your garage remains secure.

The installation of the Craftsman 139.53664SRT2 is straightforward, thanks to its user-friendly design and comprehensive instructions. Many users appreciate that it can be installed as a DIY project, saving on installation costs while providing the satisfaction of completing the task themselves. The system is compatible with most existing garage door systems, making it versatile for different setups.

In terms of noise level, the Craftsman 139.53664SRT2 operates quietly, allowing for a smooth opening and closing process without disturbing the household. This feature is particularly beneficial for those with living spaces above the garage.

Overall, the Craftsman 139.53664SRT2 is a dependable garage door opener that integrates modern technology, ensuring safety, convenience, and ease of use. Its powerful motor, Wi-Fi capability, and enhanced security features make it a valuable addition to any home.