Fasten the Rail to the Motor Unit

ASSEMBLY STEP 2

•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. Do NOTovertighten.

•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 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.

•Attach spreader to the motor unit with two screws.

HARDWARE SHOWN ACTUAL	SIZE
	©
	Lock Nut
Bolt 1/4"-20xl -3/4"	1/4"-20

ASSEMBLY STEP 3

Install the Idler Pulley

To avoid SERIOUSdamageto garagedoor opener, use ONLY those bolts/fasteners mounted in the top of the opener.

Chain

Spreader

Motor Unit

Sprocket

"U" Bracket

Bolt

Protection

Cover

Bolt Hole

J Lock Nut

Bolt

Chain and

Cable

•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 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.

			Washer
Idler	_	Trolley
Bolt tl	Screwdriver	\
	I
	I
	I
	I
	I				Bolt
					Bolt
				Trolley	I
				Trolley	t
			Grease	Stop
	_	_._	Inside	Pulley Hole
Lock	I	'_	Idler	"'", U
Washer			Pulley
3/8"	E		Pulley
3/8"	E
					_-	Lock
				Idler	,	Nut
				Pulley

HARDWARE SHOWN ACTUAL SIZE

Jli}_ i/J'Jj

Idler Bolt

Bolt 1/4"-20x1-3/4

Lock Nut 1/4"-20

Nut 3/8"

Lock Washer 3/8"

139.53930D specifications

The Sears 139.53930D is a sophisticated and reliable garage door opener that has made a significant mark in the world of home automation. With its innovative design and advanced features, this model stands out in the crowded marketplace of garage door systems.

One of the defining characteristics of the 139.53930D is its powerful motor. The opener is equipped with a robust 1/2 horsepower motor, providing ample lifting power for a variety of garage door sizes and weights. This ensures smooth and efficient operation, allowing homeowners to go about their daily routines without the worry of a sluggish or malfunctioning door.

Another key feature of the 139.53930D is its safety and security enhancements. The unit comes with a complete set of safety sensors that can detect objects in the door's path, stopping the door from closing if an obstruction is detected. This ensures added safety for children and pets, an essential consideration for any family. Additionally, the model incorporates a rolling code technology that generates a new access code every time the remote is used. This significantly reduces the risk of unauthorized access, giving homeowners peace of mind.

The installation process has also been made simpler with this model's user-friendly design. The package includes detailed instructions and all necessary hardware, making it accessible for both professional installers and DIY enthusiasts. The opener is compatible with various garage door sizes, accommodating most standard installations, which boosts its versatility.

Moreover, the Sears 139.53930D supports multiple forms of remote access. It comes with two streamlined remotes that make it easy to open and close the garage from a distance. For added convenience, the system is compatible with Smart Home technology, allowing users to control the door via smartphone apps or smart home systems. This level of integration is becoming increasingly popular, providing an additional layer of convenience for modern households.

In conclusion, the Sears 139.53930D delivers a robust and secure solution for garage door automation. With its powerful motor, advanced safety features, easy installation, and compatibility with smart technology, it represents a formidable choice for homeowners looking to enhance their garage door system. As the trend towards home automation continues to grow, this model stands out as a reliable and efficient option.

Sears 139.53930D owner manual Fasten the Rail to the Motor Unit, Install the Idler Pulley

Models: 139.53930D

ASSEMBLY STEP 2