Motor Unit Assembly Parts

'16 i

i' 11"

/ i

i

13

i'

7

(Down)

Contact LIMIT SWITCH ASSY.

ContactContactWire

KEY PART

NO. NO.

141A4371

2 41A4885-4

41A2817

441 B4245

541D178-1

64A 1344

7108D77

830B532

912A373

10 41A3150

11 41C4842

DESCRIPTION

Belt Cap Retainer

Gear and sprocket assembly. Complete with: Spring washer, thrust washer, retaining ring, bearing plate, roll pins (2), drive gear and worm gear, helical gear w/retainer and grease

Drive/worm gear kit w/grease, roll pins (2)

Line cord

End panels w/all labels

Light socket

Lens

Capacitor - 1/2 HP

Capacitor bracket

Terminal block w/screws

Universal replacement motor & bracket assembly.

Complete with: Motor, worm, bracket, bearing assembly, RPM sensor

KEY PART

NO. NO.

1241A5525-36

1341A2818

1441 D3452

1541A2822-1

1641 C4398A

1741AB150

1841 C5499

41C5500

1941A5484-3

41A2826

41A2825

DESCRIPTION

Cover

Limit switch drive & retainer

Limit switch assembly

Interrupter cup

RPM sensor assembly

Receiver logic board assembly. Complete with: Logic board, end panel w/all labels, light socket

High voltage wire harness Low voltage wire harness

End panel w/all labels

NOT SHOWN

Motor shaft bearing kit

Opener assembly hardware kit (includes screws not designated by a number in illustration)

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Sears 139.53915D owner manual Motor Unit Assembly Parts, Description
Page 37 Page 39

139.53915D specifications

The Sears 139.53915D is a significant addition to the lineup of garage door openers, blending both functionality and modern technology to enhance user convenience. This model is designed to accommodate residential garage doors, forming a reliable solution for homeowners who prioritize safety, security, and ease of use.

One of the standout features of the 139.53915D is its powerful motor, capable of handling heavy garage doors with ease. With its 1/2 horsepower motor, it ensures a smooth and swift opening and closing mechanism, allowing for quick access while still maintaining durability. This strength is particularly beneficial for larger or heavier doors that require more power for reliable operation.

The opener utilizes a chain drive system, renowned for its durability and strength. Chain drive systems are highly effective in providing reliable performance, making them a popular choice for various households. Despite this robust mechanism, the opener remains relatively quiet during operation, minimizing disruptions in the home environment.

A key characteristic of the Sears 139.53915D is its security features. It is equipped with rolling code technology, which generates a new code every time the remote control is used. This significantly enhances security by preventing unauthorized access and ensuring that only designated users can operate the garage door.

Additionally, the model features a safety reverse system, which automatically reverses the door's direction if it encounters an obstruction while closing. This not only protects vehicles and other possessions but also safeguards pets and children—an essential component for family households.

Installation of the Sears 139.53915D is designed to be straightforward, with comprehensive instructions that facilitate an efficient setup process. For those who prefer a seamless experience, the opener is compatible with several accessories, including smart home technologies. This compatibility allows users to integrate their garage door opener into a broader home automation system, providing added convenience and control through smartphone apps or smart devices.

In summary, the Sears 139.53915D garage door opener is a robust, reliable choice for homeowners seeking an efficient and secure opening mechanism. Its combination of a powerful motor, durable chain drive system, advanced security features, and ease of installation make it a formidable option in the market for garage door solutions.
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