Wilmer sliding door replacement rollers

A quick learner from Anderson, IN says:
September 12, 2022

I have a sliding glass door installed in 1999 needling replacement rollers. There is a plastic plug on the interior wood side that exposes a Philip screw slot, which I believe is the center of the bearings, but there is nothing on each end for adjusting the rollers up and down like you see on videos. You can't simply raise this door up and pull out at the bottom to get it off the track to identify the correct replacement part because the exterior face of the door hangs over the track. 

Not finding anything on the internet to help regarding its removal. There is a 3/4 in piece of wood on the interior that hides the track side with screws vertically installed into the header I could remove but still it appears the entire track needs removed. Any suggestions on getting it out so I could get the correct rollers?

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Tom from SWISCO responded:
September 15, 2022

I'm afraid I'm not sure what kind of hardware you may have. It's very odd for a patio glass door roller to simply not have an adjustment screw. 

I'd be happy to look over your door if you were to submit photos of the setup at hand, but to be honest you might be better served by contacting a local professional to come out and look at your door. This sounds like something that will take some hands-on experimentation to get out of the frame, which is unfortunately a limit of our service.
A quick learner from Anderson, IN says:
September 15, 2022
Below are pics of the door. I took a pry bar to take the pressure off the roller, removed the plastic cap and turned the screw to adjust the roller downward on both ends. This being the only logical place to adjust. The adjustment looks more like a 4 lobe clover not a slotted Phillips head type. The door is 22 years old and I am sure the roller assemblies need replaced. The only way I can see to remove the slider assemblies out of the bottom is to remove the wood cover hiding the track at the top and remove the screws in the track header to pull the slider top towards the inside to get the bottom lip of the door off the track. The problem then becomes identify the correct assemblies to buy, put the door back up when the new parts arrive and repeat the process.
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Dave Sr. from SWISCO responded:
September 19, 2022

Hey there, maybe I can help.

I believe the screw that you exposed by removing the nylon plug is the adjustment screw for the roller. Take a look at the rollers listed on this page, which are all used by Andersen. These have that same side adjustment to raise or lower the door. 

Andersen commonly used the 81-018 on their older doors, which had two mounting tabs. You could have the newer style 81-128, which Andersen started using in 1997. The only way to know for sure what you have is to remove the original. 

All that said, based on the description of your problem it is possible that your rollers might only need minor adjustments. Have someone help you to try lifting the door to take the weight off the roller while you adjust it. 
A quick learner from Anderson, IN says:
September 19, 2022
I used a pry bar to raise the door then adjusted the screw on each side to raise it up. While this helps the door slide better it is 22 years old and replacing both rollers before complete failure is needed. The trick is understanding the correct method for removing and identifying the correct replacement rollers, put it back up until they arrive and repeat the process to reinstall. That may require removing the inside top rail screws completely so I can tilt it back?
Sliding Patio Glass Door Tandem Roller
Sliding Patio Glass Door Tandem Roller
81-018
$8.70
Stainless Steel Sliding Glass Door Tandem Roller
Stainless Steel Sliding Glass Door Tandem Roller
81-149
$22.23
Andersen Sliding Glass Door Roller
Andersen Sliding Glass Door Roller
81-128
$18.95
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