Two casement replacement operators needed.

Hey Joe. This might be the 39-031 and 39-032 Dual Arm Operators, but just make sure the dimensions below match up with what you have. Let me know if anything differs in any way. For new covers and handles that work with these operators, see the 39-114L and 39-107, sold separately. For the track, see our 39-505.

Dimensions for 39-031

Let me know if you have further questions. 

Hey, Joe. Bob's not here today but I'll do my best to assist you.

To start, the major problem seems like the rollers are jumping out of the track. This could be caused by a few different factors and it's not necessarily easy to narrow it down. It's either a problem with the operator or the hinges.

Your first step should be to disconnect the operator from the track and turn it while it's not attached to anything. How does it work? Is it hanging up or skipping at all? Is there any visible damage to the gears or wheel? Or is the operation smooth?

Next, with the operator still disconnected, open and close the window by hand a few times. Does it hang up or drag at all? Does it seem lopsided? Check the top and bottom hinges for any obvious signs of damage, too, or even dirt or debris that could be clogging the works.

There's no exact science for this, unfortunately, it's something you'll just have to garner based on how the window feels. Trying to break down the operation between the two potential culprits is your easiest bet to figure out what's to blame, but if you've never done this before or otherwise have no experience with this kind or project then it may not be immediately obvious to you. That said, there are only so many reasons why a casement window has this problem. 9 times out of 10 it's either the operator or the hinge, so focus your efforts on those components for now.

Awesome, that makes this a lot easier. If you moved the window by hand and felt no issues then I agree with your assessment: we can safely rule out the hinges as the culprit and focus on the operator.

As for which operator that might be, you appear to have one of the Truth EntryGard operators. These come in a few different sizes but you should start with the 39-031, which has a 4-7/16" long link arm. That link arm size is going to be the determining factor here, so make sure to measure that before you buy anything. 

We also sell the 39-032 for the opposite side, in case you needed it. You can reuse your old covers and handles without issue, but if that's not possible for whatever reason then see our 39-323 and 39-205, respectively. I'll share specs for the 39-031 below for you to review. Lastly, if you did need a new track, I'd suggest our 39-505. It may not be a bad idea to give that a careful once-over, too, just to be safe.

Please let me know if you had any other questions!

Dimensions for 39-031

Not a problem, Joe, I'm happy to help. Looking at these photos, I agree that you're going to have to remove the wood trim to access the screws. This can be tricky, since wood is prone to cracking if you aren't careful, so make sure to use a light touch. We have a video that shows how this can be done that you may find helpful, I'll share that below. You can see my pal Mike score the wood trim and then pry it up, which is precisely what you want to be doing here.

The 39-031 is a genuine Truth EntryGard part. As long as your link arm is 4-15/16" then I'm beyond confident that this is the right part for the job.

Lastly, looking at the orientation of your arms, I also feel confident that the 39-031 is the proper side. The 39-032 will be for the opposite handed window, in case you happen to also need that. Otherwise the 39-031 will replace the part in these photos.

You're very welcome! I was happy to help. We really appreciate you considering us for your business, too, it means a lot.

Best of luck with this project and please don't hesitate to reach out if we can be of any further assistsance.