LiftMaster41A3489 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: 16020429

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Details

Material
Metal
Brand
Liftmaster
Color
Silver
Exterior Finish
Silver
Item Weight
0.01 Ounces

📏Compact dimensions

🔄Compatible with multiple brands

🔧Screw-in installation

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 Convenience with Liftmaster!

🔄 VERSATILE USE - Perfect spare part for all Liftmaster chain drive openers from 1984 to now.
🔧 GENUINE QUALITY - Authentic Liftmaster part ensures durability and performance.
📦 COMPACT LIGHTWEIGHT - Weighs only 0.01 ounces, making it easy to handle and store.
🔒 RELIABLE COMPATIBILITY - Seamlessly fits Liftmaster, Chamberlain, and Sears Craftsman models.
⚙️ EFFORTLESS INSTALLATION - Screw-in design for quick and easy setup.

The Liftmaster 41A3489 Garage Door Opener Carriage is a genuine replacement part designed for compatibility with Liftmaster, Chamberlain, and Sears Craftsman chain drive garage door openers from 1984 to present. With its screw-in installation and lightweight design, this trolley assembly is the perfect solution for maintaining your garage door's functionality.

Specifications

Installation Type	Screw-In
Recommended Uses For Product	Spare part for garage door openers
UPC	753182403168
Manufacturer	LIFTMASTER
Part Number	41A3489
Item Weight	0.01 ounces
Package Dimensions	5.98 x 4.02 x 2.28 inches
Item model number	41A3489
Is Discontinued By Manufacturer	No
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No

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

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