Assembly Step | Craftsman 139.53920D guide

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 securety with a 1/4"-20 lock nuL Do NOT overtighten,

°Remove the two bolts from the top of the motor unit.

°Place the "U" bracket, flat side down onto the motor unit and align the bracket hole with the bolt holes. Fasten with the previously removed bolts

•Align the rail assembly with the top of ihe 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,

•Atlach spreader to the motor unit with two screws

HARDWARE SHOWN ACTUAL BtZE

: CAUTION]

"ToavoidSEniOusaamaOetog raOedooiOP n r,

use ONLYthose boitstfastenersmountedin the top of

the opener.

]

Motor Unit

"U" Bracket

BOll

Cover

	©	SLIDE RAIL TO STOPS	""
		ON TOP AND SIDES
		OF BRACKET
		Lock Nut
	Lock Net
Bolt 1/4"_20xl-314"	!/4"-20

ASSEMBLY STEP 3

Chain and Cable

Nnstall lhe Idler Pulley

. Lay the chain/cable beside the rail, as shown, Grasp the end of the cable and pass approximately 12" (30 cm) 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 pro-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 t/4"-20 lock nut.

Idler Belt

Bolt l/4"-20×t.3t4"

Lock Nut 1/4%20

Nut 3!8"

Lock Washer 3/8"

139.53920D specifications

The Craftsman 139.53920D is a versatile and robust garage door opener, designed to provide both convenience and security to homeowners. Known for its reliability and advanced features, this model stands out in the competitive market of garage door openers.

One of the key features of the Craftsman 139.53920D is its powerful motor. With a lifting capacity suitable for most standard garage doors, it boasts a 1/2 horsepower motor that delivers the strength necessary to open and close heavy garage doors effortlessly. This ensures a smooth and quiet operation, minimizing noise disruptions, which is especially valuable for homes with living spaces above or adjacent to the garage.

In terms of technology, the Craftsman 139.53920D incorporates a range of advanced features aimed at enhancing user experience. It comes equipped with Craftsman's proprietary Triband technology, which operates on three frequencies, providing increased range and improved signal reliability. This technology minimizes signal interference, ensuring that the opener responds quickly to your commands, whether you are close by or parked at the end of the driveway.

Safety is also a critical aspect of the Craftsman 139.53920D. The unit includes an automatic reverse feature that immediately stops and reverses the door's motion if it detects an obstacle in its path. This is vital in preventing accidents and ensuring the safety of children and pets. Additionally, the opener is compatible with the Security+ 2.0 system, which offers rolling code technology that changes the access code each time the remote is used, adding an extra layer of security against unauthorized access.

Installation of the Craftsman 139.53920D is user-friendly, with clear instructions provided and all necessary hardware included. The unit can accommodate various garage door styles, making it a flexible choice for different homeowners.

Furthermore, the Craftsman 139.53920D offers smartphone compatibility through the Craftsman smart app, allowing users to control their garage door from anywhere, receive real-time alerts, and even monitor the status of the door remotely. This feature makes it easier than ever to ensure that your garage is secure, even when you're not at home.

In summary, the Craftsman 139.53920D is an excellent choice for homeowners seeking reliability, advanced technology, and convenient features in a garage door opener. Its blend of power, safety mechanisms, and smart technology makes it a standout option for enhancing home security and convenience.

Craftsman 139.53920D owner manual Assembly Step, Fasten the Rail to the Motor Unit

Models: 139.53920D