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Liftmaster 41A3489 Garage Door Opener Carriage

Q: Chamberlain's instructions seem quite extensive (21 steps). Did people actually do all 21 steps found on their website to replace 41A3489?

I doubt anybody even reads the instructions--I certainly didn't read them. The only tricky bit is to make sure that you don't let the chain jump the sprocket during disassembly--otherwise you will end up as I did and do a bit of trial and error to get the chain right again. It's really a trivial repair job if you have any household repair experience at all, and if you have only a little, this would be a good place to start. You'll want to have some basic tools like sockets and wrenches. Do pay attention to the instructions that come with it about the master link, although it is pretty easy to figure out without the instructions. Honestly, a really simple repair that took me about 1 1/2 hours from unpacking the kit to finish, and I have a very difficult to access system, I worked in an unhurried fashion, and I messed up and let the chain jump during disassembly adding some extra time to the project. As a final piece of advice, these are the basic steps as best as I remember them. One, detach far end of rail from motor so that you can remove old piece and slide new one on. Two, undo old piece from chain and remove. Three, slide new piece on rail and fix it to chain. Four, reattach rail. When you are done there are adjustments on the motor box to fine tune the garage door up and down settings. Take your time, try not to let the chain jump the sprocket or mark the chain and sprocket so you know what are the correct lengths, and probably don't try to do this in the middle of a cold, bitter winter. Otherwise, instructions? What instructions?

Q: does this part have both inner and outer carriage for the T-rail?

Yes it does. Thank you for asking. It is available from Moving Up Garage Doors

Q: Will this part fit craftsman 1/2 hp model 917.378431?

Don’t recognize that model number recheck the number should be a 139.xxxxxx

Q: Does this trolley have plastic inserts for a smooth opening?

No, but from my experience, it have to be replaced every three years

4.6/5

Product ID: 364058064

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Details

Brand
LiftMaster
Item Weight
0.01 Ounces
Installation Type
Screw-In
UPC
753182403168
Manufacturer
Liftmaster

📅Since 1984

🔗Chain drive compatible

🔧Genuine part

Frequently Bought Together

Liftmaster 41A3489 Garage Door Opener Carriage

Lubriplate Multi-Purpose Grease for Gate or Garage Door Openers LBR-S

LIFTMASTER Garage Door Openers 83A11-2 Rail Grease

Description

🔑 Unlock the Future of Garage Access!

TIMELESS DESIGN - Compatible with models from 1984 to present, ensuring longevity.
COMPLETE ASSEMBLY - Includes everything you need for a smooth operation.
EASY INSTALLATION - Quick and hassle-free setup for your garage door opener.
DURABLE CONSTRUCTION - Built to withstand the test of time and heavy usage.
SEAMLESS COMPATIBILITY - Works with Liftmaster, Chamberlain, Sears, Craftsman, Wayne-Dalton, and Master Mechanic.

The Liftmaster 41A3489 Garage Door Opener Carriage is a genuine replacement part designed for seamless compatibility with various chain drive operators. This complete trolley assembly is perfect for models from 1984 to present, ensuring durability and ease of installation.

Specifications

Manufacturer	Liftmaster
Item model number	41A3489
Package Dimensions	15.2 x 10.2 x 5.8 cm; 0.28 g
ASIN	B000F5KEWO

Have a Question? See What Others Asked

Chamberlain's instructions seem quite extensive (21 steps). Did people actually do all 21 steps found on their website to replace 41A3489?

does this part have both inner and outer carriage for the T-rail?

Will this part fit craftsman 1/2 hp model 917.378431?

Does this trolley have plastic inserts for a smooth opening?

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

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€ 198.26

Duties & taxes incl.

Finlandstore

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30 daysfor PRO membership users

15 dayswithout membership

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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