Craftsman 139.53645SRT3 Install the Trolley on the T-rail, Hardware Shown, Actual Size

Models: 139.53648SRT2 139.53645SRT3 139.53834SRT3 139.53335SRT3 139.53646SRT2 139.53660SRT1

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Assembly Step 2

I

Hardware Shown

 

 

Actual Size

Install the Trolley on the T-rail

 

 

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

LoCk Washer

Nut

5/16 °

5/16" - 18

Lock Washer

Outer Nut 5/16"_

Troile_

Temporary Stop

Screwdriver

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 screwdriverstop.

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

Assembly

Step

3

I

Fasten the

T-raft to

the Opener

Place the opener on packing material to protect the cover. For convenience, put a supportunder the cable pulley bracket.

mounted in the top of the opener.

i Rernove the (2) 5/16"-18xl/2" washered screws

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 intothe cover protectionbelt 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

Hex

Screw

Nut

Lock Washer

_16' -

18 x 718"

5/16"- 18

5/16'

CAUTION

To fasten rail, use only those screws mounted In the top of the opener. Any other screws will cause serious damage to the opener.

Washered Screw

5/16"-18xl/2"

Hex Screw 5/16"-18X7/8'

Cover

Protection

5/16"*18

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Craftsman 139.53645SRT3 owner manual Install the Trolley on the T-rail, Hardware Shown, Actual Size, Fasten Raft to Opener

139.53648SRT2, 139.53645SRT3, 139.53834SRT3, 139.53335SRT3, 139.53646SRT2 specifications

The Craftsman 139.53660SRT1, 139.53646SRT2, 139.53335SRT3, 139.53834SRT3, and 139.53645SRT3 are a series of advanced garage door openers designed for homeowners looking to enhance convenience, security, and functionality in their daily lives. Each model is equipped with cutting-edge technologies that streamline garage access while ensuring safety and durability.

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Overall, the Craftsman 139.53660SRT1, 139.53646SRT2, 139.53335SRT3, 139.53834SRT3, and 139.53645SRT3 garage door openers represent a blend of functionality, security, and user convenience. Homeowners seeking reliable, smart, and efficient solutions for managing their garage doors will find these models highly effective, offering peace of mind and ease of use in their everyday lives.