Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 04-08-2000, 12:50 AM
MikeTangas's Avatar
Senior Member
Join Date: Apr 2000
Location: So. Cal
Posts: 4,430
Now that I have replaced the actuators with complete units, I am asking if the actuators is rebuildable. When I finished, I was looking at one of the old units and noticed that the rubber diaphrams appeared to be held in place by a snap ring. Removing the ring, I was able to remove the worn diaphrams and clean up the body.

Can just the diaphrams be purchased to rebuild the unit? If so, then I could rebuild the two I pulled out, and have low cost spares handy for the next time.


Mike Tangas
73 280 SEL

Reply With Quote
Old 04-08-2000, 03:09 AM
Larry D
Posts: n/a

I've seen the diaphragms in Impco's Performance Products catalog for Mercedes. You can request a catalog at http://www.************************/ordermercedes.asp I've not ordered any of their parts yet, but they list what looks like this model diaphragm for $6.95 each. (They have a little trouble with terminology, as they also call the complete actuator a "diaphragm", but the price there is $66.05.) Since they have them, others are bound to as well. Let us know what you find; I will need to do this soon myself. My D is now limping along on two patched door lock diaphragms that I "McGuiver'd" tothether using a similar size diaphragm from surplus, some wire, and some silicone sealant.
Reply With Quote
Old 04-08-2000, 08:39 AM
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
If you really want to save some money notice that two of the diaphrams will be nearly new on each 4 diaphram servo. Only replace the cracked ones.

As the inside of the door is outside of the car (rain water goes through it). The upper diaphrams weather crack while the lower ones don't. (BTW all models got rid of these exposed diaphrams around 1980).

The $66 price for complete units sounds pretty steep to me (is this place supposed to be discount?). Many of these mail order retailers are just that - retailers. Prices on aftermarket parts that approach MB list, pretty good game.

We have used the single replacement diaphrams for years but they are now only on 20 year old vehicles and we have quit stocking them.

Steve Brotherton
Owner 24 bay BSC
Bosch Master, ASE master L1
26 years MB technician
Reply With Quote
Old 04-08-2000, 09:10 PM
MikeTangas's Avatar
Senior Member
Join Date: Apr 2000
Location: So. Cal
Posts: 4,430
66 is about 10 dollars more than what I paid at, $56.00 and change, a complete unit, including the push rod. Since the local MB shop wanted about $60 just for the vacuum body, I didn't feel bad buying the whole unit.

Now I can see about ordering some rubbers, and I can rebuild the ones I pulled out, and have good spares for the next time.

I know what you mean about the elements Steve. The right rear, was soooo bad, the upper body was full of water (washed the car the night before), and the lower rubber was really dry rotted. I found the window stop tabs were bent down a few degrees, which allowed the windor rail to make contact. The is what rubbed the hole to begin with. The tabs have been straightened, and the window does not make contact - for now. Looks like 27 years of rolling up and down took it's toll as well.

Mike Tangas
73 280 SEL
Reply With Quote
Old 04-10-2000, 01:28 PM
J.HIDALGO's Avatar
Registered User
Join Date: Jul 1999
Location: Jax, FL
Posts: 1,785
Try George Murphy at Performance Analysis (423)482-9175. He can probably help you out VERY cheap!
Let us know!

Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Electric lock actuators or stay with vacuum? 81Wagon Diesel Discussion 19 03-25-2012 09:52 PM
Vacuum help? kerry Diesel Discussion 14 01-04-2005 05:01 PM
How may vacuum actuators in W124? AtlBenz Tech Help 1 05-10-2004 09:59 PM
Vacuum Actuators Leaking Wayne Johnson Tech Help 2 08-18-2003 10:15 AM
Door lock diagnosis & repair, by popular demand ncarter Tech Help 1 07-15-1999 10:24 AM

All times are GMT -4. The time now is 07:15 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page