Replaced Window Regulator, still sticking!! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1968_K20_4x4 · 02-09-2017, 12:40 AM

I recently replaced my window regulator (Drivers side) with a new unit from LMC. I also replaced the rubber door glass run and the felt insert on the vent window, all with parts from LMC. However, when I put it all back together my window goes up ok untill about 3/4 of the way up, and then it gets very difficult to crank. I can force it through this tough spot, and then it will finish going the rest of the way up. Same thing to roll it down, it starts out ok, but when it gets about 1/4 of the way down it is very difficult to crank. However once I get over this spot I can finish rolling it down normally. I dont understand why this is happening as its all new parts inside the door, and I did grease up the channels that the regulators wheels run in. Very frustrating as I spent all the time and effort to rebuild my door, just to have it work no better than it did before!

Any ideas why this is happening??

truckster · 02-09-2017, 12:50 AM

Did you take the bottom track off the glass? It sounds like it might be off center, which can cause the rollers to hit the end of the track as it goes up and down.

1968_K20_4x4 · 02-09-2017, 01:13 AM

Ya I had the glass right out of the door... Ok thanks for the reply, Ill check and try to see if the rollers are hitting anywhere

*randy500* · 02-09-2017, 01:55 AM

Check that the rear channel in the door, that the weatherstrip is fully seated, especially where it transitions from the channel to the door. Test the regulator by loosening up the bolts on that channel and see if it rolls up without binding.

1968_K20_4x4 · 02-09-2017, 09:23 AM

That sounds like a good idea, thanks! I will try that as well and see what happens

1968_K20_4x4 · 02-09-2017, 09:32 PM

I took a look at my door today, and all the rollers appear to be functioning as they should. I removed the screws of the rear channel, and when I did that, the window went up and down perfectly!! It works well with the channel just slightly lower than its original position, so I think Ill modify the channel to fit where it wants to go and give my window the room it needs to move freely. Thanks for the ideas guys!

*randy500* · 02-09-2017, 09:37 PM

I knew that was the problem, did you check to see if the rear channel rubber was fully seated where it transitions to the door? Lots of times its not and this happens. Put your hand up in there, its difficult and push it in or, push the rubber in while the channel is a little lower and slide the metal up over the rubber while pushing it up into proper position for the bolts.

1968_K20_4x4 · 03-09-2017, 05:54 PM

I did some slight adjustment to the rear channel in the door and made sure the rubber was completely seated properly, and now everything seams to be working just fine. Thanks guys!

slikside · 03-09-2017, 08:51 PM

Sub'd...good info for my future project.

**70STOVEBOLT** · 03-09-2017, 10:23 PM

Would the rear channel being out of adjustment cause the glass to dig into the division bar felt? I gabevthis dame problem with both of mine. I have not had the rear channel out of the driver's side but I replaced the glass and the bottom channel, it was purchased assembled (tinted glass). The passenger's side glass was also purchased with the bottom channel assembled but I did have the rear channel out if it. I also have new channel runs and division bar felts installed. I converted the regulators to power as well.

*randy500* · 03-09-2017, 11:45 PM

The glass digs into the division bar because the rear run channel lining is not seated at the transition, the symptom is hard to roll up near the top where the guide on the glass itself comes to the area of run channel lining that is not seated. You have to feed the run channel down carefully and then check by hand it's all the way seated, a flashlight looking down can sometimes reveal the problem

**70STOVEBOLT** · 03-10-2017, 11:44 AM

Randy, thanks for the tip, I will check that out.

btraudt · 03-11-2017, 01:05 PM

I'm in the process of removing the triangular side window so I can put new weather stripping around it. I'm having a hard time getting that window out while the larger window is still in place. Do I have to take it out first?

CG · 03-11-2017, 03:04 PM

Quote:

Originally Posted by btraudt

I'm in the process of removing the triangular side window so I can put new weather stripping around it. I'm having a hard time getting that window out while the larger window is still in place. Do I have to take it out first?

http://67-72chevytrucks.com/vboard/s...d.php?t=732400

02-09-2017, 12:40 AM	#1
1968_K20_4x4 Registered User Join Date: Oct 2016 Location: Ontario Canada Posts: 191	Replaced Window Regulator, still sticking!! I recently replaced my window regulator (Drivers side) with a new unit from LMC. I also replaced the rubber door glass run and the felt insert on the vent window, all with parts from LMC. However, when I put it all back together my window goes up ok untill about 3/4 of the way up, and then it gets very difficult to crank. I can force it through this tough spot, and then it will finish going the rest of the way up. Same thing to roll it down, it starts out ok, but when it gets about 1/4 of the way down it is very difficult to crank. However once I get over this spot I can finish rolling it down normally. I dont understand why this is happening as its all new parts inside the door, and I did grease up the channels that the regulators wheels run in. Very frustrating as I spent all the time and effort to rebuild my door, just to have it work no better than it did before! Any ideas why this is happening??

02-09-2017, 12:50 AM	#2
truckster Registered User Join Date: Jan 2001 Location: Orem, Utah Posts: 8,002	Re: Replaced Window Regulator, still sticking!! Did you take the bottom track off the glass? It sounds like it might be off center, which can cause the rollers to hit the end of the track as it goes up and down.

02-09-2017, 01:13 AM	#3
1968_K20_4x4 Registered User Join Date: Oct 2016 Location: Ontario Canada Posts: 191	Re: Replaced Window Regulator, still sticking!! Ya I had the glass right out of the door... Ok thanks for the reply, Ill check and try to see if the rollers are hitting anywhere

02-09-2017, 01:55 AM	#4
randy500 Account Suspended Join Date: Jul 2016 Location: Tacoma, WA Posts: 6,873	Re: Replaced Window Regulator, still sticking!! Check that the rear channel in the door, that the weatherstrip is fully seated, especially where it transitions from the channel to the door. Test the regulator by loosening up the bolts on that channel and see if it rolls up without binding.

02-09-2017, 09:23 AM	#5
1968_K20_4x4 Registered User Join Date: Oct 2016 Location: Ontario Canada Posts: 191	Re: Replaced Window Regulator, still sticking!! That sounds like a good idea, thanks! I will try that as well and see what happens

02-09-2017, 09:32 PM	#6
1968_K20_4x4 Registered User Join Date: Oct 2016 Location: Ontario Canada Posts: 191	Re: Replaced Window Regulator, still sticking!! I took a look at my door today, and all the rollers appear to be functioning as they should. I removed the screws of the rear channel, and when I did that, the window went up and down perfectly!! It works well with the channel just slightly lower than its original position, so I think Ill modify the channel to fit where it wants to go and give my window the room it needs to move freely. Thanks for the ideas guys!

02-09-2017, 09:37 PM	#7
randy500 Account Suspended Join Date: Jul 2016 Location: Tacoma, WA Posts: 6,873	Re: Replaced Window Regulator, still sticking!! I knew that was the problem, did you check to see if the rear channel rubber was fully seated where it transitions to the door? Lots of times its not and this happens. Put your hand up in there, its difficult and push it in or, push the rubber in while the channel is a little lower and slide the metal up over the rubber while pushing it up into proper position for the bolts.

03-09-2017, 05:54 PM	#8
1968_K20_4x4 Registered User Join Date: Oct 2016 Location: Ontario Canada Posts: 191	Re: Replaced Window Regulator, still sticking!! I did some slight adjustment to the rear channel in the door and made sure the rubber was completely seated properly, and now everything seams to be working just fine. Thanks guys!

03-09-2017, 08:51 PM	#9
slikside Registered User Join Date: Jun 2010 Location: San Diego Co. Posts: 1,187	Re: Replaced Window Regulator, still sticking!! Sub'd...good info for my future project. __________________ 1972 Chevy C-10, SWB, Fleet, 350/350, PS, PB, HEI, mostly stock, Survivor.

03-09-2017, 10:23 PM	#10
70STOVEBOLT Senior Member Join Date: Jun 2005 Location: Winona Lake, IN Posts: 6,480	Re: Replaced Window Regulator, still sticking!! Would the rear channel being out of adjustment cause the glass to dig into the division bar felt? I gabevthis dame problem with both of mine. I have not had the rear channel out of the driver's side but I replaced the glass and the bottom channel, it was purchased assembled (tinted glass). The passenger's side glass was also purchased with the bottom channel assembled but I did have the rear channel out if it. I also have new channel runs and division bar felts installed. I converted the regulators to power as well. __________________ 70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Sliding Rear Window Power Windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear

03-09-2017, 11:45 PM	#11
randy500 Account Suspended Join Date: Jul 2016 Location: Tacoma, WA Posts: 6,873	Re: Replaced Window Regulator, still sticking!! The glass digs into the division bar because the rear run channel lining is not seated at the transition, the symptom is hard to roll up near the top where the guide on the glass itself comes to the area of run channel lining that is not seated. You have to feed the run channel down carefully and then check by hand it's all the way seated, a flashlight looking down can sometimes reveal the problem

03-10-2017, 11:44 AM	#12
70STOVEBOLT Senior Member Join Date: Jun 2005 Location: Winona Lake, IN Posts: 6,480	Re: Replaced Window Regulator, still sticking!! Randy, thanks for the tip, I will check that out. __________________ 70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Sliding Rear Window Power Windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear

03-11-2017, 01:05 PM	#13
btraudt Registered User Join Date: Feb 2017 Location: Austin Posts: 7	Re: Replaced Window Regulator, still sticking!! I'm in the process of removing the triangular side window so I can put new weather stripping around it. I'm having a hard time getting that window out while the larger window is still in place. Do I have to take it out first?

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