Automotive Air Conditioning Information Forum (Archives)

Provided by www.ACkits.com

We've updated our forums!
Click here to visit the new forum

Archive Home

Search Auto AC Forum Archives

GM R4 double lip shaft seal Pages: 12

dman on Sat July 12, 2008 12:03 AM User is offline

Year: 1992
Make: Chev
Model: S10 Blazer
Engine Size: 4.3
Refrigerant Type: 134

I've had no luck replacing the shaft seal. The first one inverted and totally deformed while trying to get it to start on the thread protector. The outer lip seemed extremely small and didn't fit unless forced. I used plenty of oil and the smaller o-ring from the kit. The second one I just twisted the heck out of to get it over the thread protector and it seemed to seat fine and didn't invert but it just won't hold a seal. I got the seals locally. Can someone crosscheck the numbers to make sure I have the right seal in the first place. The package says it's for an HD6, HT6. The number is MT2105 santech.

It originally had a ceramic seal so I need to order the cage remover tool also. I found a shop here that removed it for me free but I will need one for future use. Thanks for any help.

Chick on Sat July 12, 2008 6:05 AM User is offlineView users profile

You can get the seals and the tools right here. Drop an e-mail to ackits.com. You obviously have the small seals, which won't work, but the guys here can set you up with the larger ones..Hope this helps..

Changing GM front shaft seals

-------------------------
Chick
Email: Chick

---------------------------------------------

Freedoms just another word for nothing left to lose

GM Tech on Sat July 12, 2008 9:31 AM User is offline

Ceramic seals were obsoleted on R-4 in 1984-- so who knows what is going on with your '92 blazer? That should have been a single lip teflon seal in there-- also the compressor should be a 6 pole clutch and not a 4 pole- bolt on pulley config... so how did you get an 8-year prior pump on the '92 Blazer. You obviously have the wrong seal-- I have done thousands of seal replacements and have never incurred your problem...

-------------------------
The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

dman on Sat July 12, 2008 10:05 AM User is offline

Interesting, maybe I was wrong about it being ceramic but I thought any of them that had the cage style were ceramic. It had the snap ring, then a metal washer type seal that sealed the o-ring then under that the cage style seal. It was black plastic looking material. The pulley is the standard metric press on. How do I tell how many poles it has? I've had the car for 2 years and it had the compressor then. The previous owner said they recently had it replaced. it is a reman. I replaced the condenser, evaporator (bought from the good people at AMA). I already had the accumulator. I won't make that mistake of buying parts elsewhere again. The seal kit was just a spir of the moment thing. The santech seal kit had a small and a large o-rings, too my eyes they were the same though, I had to choose which matched the existing o-ring that I removed but I did choose the closest match..

Edited: Sat July 12, 2008 at 10:35 AM by dman

TRB on Sat July 12, 2008 10:12 AM User is offlineView users profile

As for the seal the Santech should not have been an issue brand wise.

-------------------------

When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

dman on Sat July 12, 2008 10:29 AM User is offline

But was it the correct seal for an R4? The package didn't list R4, just H6. Do H6's and R4's have the same size shaft? I had to stretch that thing at least an 1/8 inch to get it started on the thread protector. That just doesn't seem right.

GM Tech on Sat July 12, 2008 10:32 AM User is offline

Ceramic seals were used along with the carbon (bird cage) seal- found mostly on A-6 compressors- I don't have photos on this computer- or I would post them

You may have the wrong shaft seal protector tool- the new seal should slide over it with minimal resistance- then snap into place when it is seated inside the o-ring- you can do it all by feel once you do a few....

You probably have the right compressor- just a little hazy on what the seals are and their use- I can't fathom the older R-4 being on your truck...besides- there was not a serpentine belt application for the old style compressor...

-------------------------
The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

dman on Sat July 12, 2008 10:40 AM User is offline

The thread protector fits snugly on the shaft though. and that's why I'm thinking I just got the wrong kit locally. I didn't mean to infer there was anything wrong with the santech brand, just that I may have gotten the wrong kit.

dman on Sat July 12, 2008 10:50 AM User is offline

"- the new seal should slide over it with minimal resistance- then snap into place when it is seated inside the o-ring- you can do it all by feel once you do a few.... "

That's what I thought. I felt it slip into place on the o=ring but there was anything but minimal resistance getting it started over the thread protector.

GM Tech on Sat July 12, 2008 12:38 PM User is offline

H-6, R-4, V-5 all used the same seal.....there was a period of time around 2002 that H-6 went to a larger shaft diameter- but you have the opposite problem- if you got the wrong H-6 seal it would have slipped over too easily. Your R-4 should take the AC delco 15-30948 or GM 2723954. these are what I use-- see if they cross up with your kit..

-------------------------
The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

TRB on Sat July 12, 2008 12:56 PM User is offlineView users profile

That Delco crosses over to our 21-32504

-------------------------

When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

dman on Sat July 12, 2008 1:12 PM User is offline

(R4 - DA6 - HR6) Your link shows these compressors. My santech kit lists HD6 AND HT6. Are they different from the HR6?

TRB on Sat July 12, 2008 1:59 PM User is offlineView users profile

Did a little cross checking from GMtech's Delco to our main supplier to our main O-ring and gasket supplier. Remember I using their supplied data. What I find interesting in this is doing these crossing GMTech's Delco seems to be a single lip seal. Again according to these crosses which are not always correct or updated.

15-30948 crosses to a 21-32504

Checking my Seal supplier I believe the same seal kit as the 15-30948 to be a SK-705N.

SK-705N crosses to the 21-32504.



-------------------------

When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

Chick on Sat July 12, 2008 2:14 PM User is offlineView users profile

Tim, your number "21-34734" is what I use on V5's R4's.. as shown on the seal replacement thread..Hope this helps..

-------------------------
Chick
Email: Chick

---------------------------------------------

Freedoms just another word for nothing left to lose

TRB on Sat July 12, 2008 2:26 PM User is offlineView users profile

I use it also Chick. I just thought I would cross the numbers GMTech posted. I personally still stand behind the two numbers I have listed for the different shaft sizes.

-------------------------

When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

Chick on Sat July 12, 2008 2:48 PM User is offlineView users profile

Tim, GM tech's numbers are correct, as they are what I used to use also. But a couple years back, we went thru this same problem with small seals, and you found that number for me which is what I use now.. The aftermarket numbers are apparantly wrong (not yours) but the number I gave, 21-34734 is what crosses with the GM and Delco number..Won't forget that again... Hope this helps..

-------------------------
Chick
Email: Chick

---------------------------------------------

Freedoms just another word for nothing left to lose

TRB on Sat July 12, 2008 4:01 PM User is offlineView users profile

Where did you find the cross for those numbers?

-------------------------

When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

Chick on Sat July 12, 2008 4:43 PM User is offlineView users profile

From you a couple years ago when I couldn't get the right seals, other than from GM, with both the GM and acdelco numbers as GM tech stated. Then we had a bunch of smaller seals which didn't work, and after a lot of work (surprised you forgot) you found that the 21-34734 IS the correct number from your supplier for the Gm double lipped seal to replace GM and delco numbers..I still have a few and they work just fine...

-------------------------
Chick
Email: Chick

---------------------------------------------

Freedoms just another word for nothing left to lose

TRB on Sat July 12, 2008 5:04 PM User is offlineView users profile

Right but I manually looked up the seal itself. As stated the two numbers we ended up with are correct for our double lip seals.

My question in this post is the 15-30948 really a double lip seal? I searched all over the net today and every parts house just says lip seal, including the Delco site.



-------------------------

When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

Chick on Sat July 12, 2008 5:43 PM User is offlineView users profile

Yes it is Tim, I still have one of those too. And you can see the two lips, I can send you a pic of the "Delco package" with both numbers on it , and try a closeup of the double lip if you'd like.. In fact I got them from a local GM dealer at the time, and they came in the Delco package with both GM's number and the Delco number on it..

-------------------------
Chick
Email: Chick

---------------------------------------------

Freedoms just another word for nothing left to lose

TRB on Sat July 12, 2008 6:10 PM User is offlineView users profile

Good, my only concern here was if someone not knowing the difference. Bought a Delco seal thinking it was a DLS and getting a SLS. But if Delco updated the product within the item number all is good!

-------------------------

When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

Chick on Sat July 12, 2008 6:13 PM User is offlineView users profile

To dman : The pic below shows the "cage, ceramic seal, and the "replacement double lipped seal". If you only pulled out what looks like the one on the far right, it;'s a regular lip seal and no cage is inside. If you pulled out a ceramic seal, no rubber in the middle, then you have a cage below it. But I think you just have them confused. You can order item number 21-34734 from Ackits.com and you will have the right double lipped seal for your R4 compressor..Hope this helps..




-------------------------
Chick
Email: Chick

---------------------------------------------

Freedoms just another word for nothing left to lose

dman on Sun July 13, 2008 12:05 PM User is offline

Thank you. I will place my order first thing in the morning. I definitely had the 2 piece seal. May I suggest amending the instructions for replacing the shaft seal to include mentioning the original seal, like mine, may be a two piece seal, and you will need the "cage" removal tool in addition to the "lipped" seal removal/install tool. Just a thought and I may be wrong if it already mentions it but thanks again for all the advice and excellent step-by-steps. ........ and great pricing ....and great customer service .... and fast shipping. A rare combination these days.

terryk on Tue March 19, 2013 2:01 AM User is offline

Quote
Originally posted by: TRB
That Delco crosses over to our 21-32504

WyrTwister on Fri April 12, 2013 7:01 PM User is offlineView users profile

Quote
Originally posted by: dman
I've had no luck replacing the shaft seal. The first one inverted and totally deformed while trying to get it to start on the thread protector. The outer lip seemed extremely small and didn't fit unless forced. I used plenty of oil and the smaller o-ring from the kit. The second one I just twisted the heck out of to get it over the thread protector and it seemed to seat fine and didn't invert but it just won't hold a seal. I got the seals locally. Can someone crosscheck the numbers to make sure I have the right seal in the first place. The package says it's for an HD6, HT6. The number is MT2105 santech.



It originally had a ceramic seal so I need to order the cage remover tool also. I found a shop here that removed it for me free but I will need one for future use. Thanks for any help.


I watched a YouTube video of a guy changing a seal . He lubed the seal and the seal / shaft protector real well . Then forced the seal over the seal protector , backwards , to stretch the seal . He said it would make it easier to install , when he went to install it ( the correct direction ) , for real .

God bless
Wyr


Back to Automotive Air Conditioning Forum

We've updated our forums!
Click here to visit the new forum

Archive Home

Copyright © 2016 Arizona Mobile Air Inc.