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Photo DIY- Front Caliper Rebuild- W460 Perrot
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Posted 12/18/2008 12:40 PM
petermerle
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Date registered: Apr 2006
Location: Cape Town ( deep south )
Vehicle(s): W460 *1, W123 *2, W124
Posts: 1312
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Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

On EPC is says that kit 6683 applied to caliper A0034214998 and 5098 . If you look up that part number it reports it as a TEVES caliper
Peter
#138624 - in reply to #135759
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Posted 12/19/2008 2:05 AM
Oldtimer
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Date registered: Feb 2007
Location: Germany, Bavaria, near Munich
Vehicle(s): 240 GD, 1979/10 ; G55AMGK 2006/2, 280GE 1984, SL55
Posts: 9

RE: Photo DIY- Front Caliper Rebuild- W460 Perrot

G-AMG - 12/17/2008 4:45 PM

Well, I guess you are stuck getting the pistons as individual items.

Here are the numbers.



Hello ,

the information EPC gives about the pistons is wrong, inside and outside pistons are the same pistons with the part number of the inside piston, the outside-number is a spezial piston which you don't need.

see the pictures on my website http://hehlhans.de/280ge/bilder/bremse/topf2.jpg and

http://hehlhans.de/280ge/bilder/bremse/topf3.jpg

You will find many photos at http://www.hehlhans.de/tipp98.htm about my restauration of the 280GE, sorry the website is in German .


@Barm

nice, that you know my website. I found your articles about the WUR of the 280GE, I rebuild one 280GE 1984 for the transylvania-trophy 2009 at Deva, Romania

http://www.transilvania-trophy.com

Can I use your picture of the whole system WUR on my website? If you speek German , please you can write me an email to webmaster@hanshehl.de

Sorry, my English is not good

Greetings Hans Hehl



Edited by Oldtimer 12/19/2008 2:12 AM
#138668 - in reply to #138609
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Posted 12/19/2008 7:18 AM
Inkblotz
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Date registered: Apr 2006
Location: Georgia
Vehicle(s): 90 300GD "Thundering Turtle II", w/ 603A turbo
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RE: Photo DIY- Front Caliper Rebuild- W460 Perrot

Hehl

It's great to have you join us! Your detailed 240Gd web site has helped me out on many occasions with my 300GD in figuring out how to repair it.

Welcome

Mark
#138682 - in reply to #138668
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Posted 12/19/2008 9:17 AM
G-AMG
G-Class DIY Host




Date registered: May 2006
Location: South Texas
Vehicle(s): '04 G55, '80 280GE, '99 S420, '98 E320, 2011 E350
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Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

Oldtimer,

I am actually happy you mentioned the INNER and OUTER are, in fact, the SAME!

When I did this job, I was careful to keep the inner/outer orientation correct upon re-install....... but when I had everything apart, I noticed NO DIFFERENCE between the inner and outer pistons!!

Thanks for clearing this up in my mind.

Now the question: Why IS there a special outer piston??

Edited by G-AMG 12/19/2008 9:19 AM
#138686 - in reply to #135759
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Posted 12/19/2008 9:21 AM
trc
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Date registered: Jun 2006
Location: Estonia
Vehicle(s): MB G350DT '93; MB 300 SD '83 ; Subaru Forester,
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Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

Whoa. Hello Hans. I'm glad you found a way here.
Have found very good tips from your site. Too bad i have translate it with online translators
#138687 - in reply to #135759
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Posted 12/19/2008 10:33 AM
petermerle
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Date registered: Apr 2006
Location: Cape Town ( deep south )
Vehicle(s): W460 *1, W123 *2, W124
Posts: 1312
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Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

Welcome to P3 Hans , fantastic website you have!
PEter
#138692 - in reply to #135759
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Posted 12/20/2008 5:31 AM
Oldtimer
Member




Date registered: Feb 2007
Location: Germany, Bavaria, near Munich
Vehicle(s): 240 GD, 1979/10 ; G55AMGK 2006/2, 280GE 1984, SL55
Posts: 9

Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

Hello,

much thanks for the kudos.

Yes, it's good to know that all around the world there are friends of the "Mercedes Gelaendewagen".

I'm sad, that my website is not in English. Klaus Hold (http://www.gwagen.de) had translated some time ago several pages of my website, he speeks very good English and his website is also in English. But it is too much work to translate all my jobs about my three G's and my "green baby", my SL55AMG of 2002.

But I shot many pictures which needs no translation

Dave Gomes (hipine here in the forum) is a friend of mine and visited me in 2005.

so long Hans

#138766 - in reply to #138692
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Posted 12/20/2008 5:43 AM
Oldtimer
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Date registered: Feb 2007
Location: Germany, Bavaria, near Munich
Vehicle(s): 240 GD, 1979/10 ; G55AMGK 2006/2, 280GE 1984, SL55
Posts: 9

Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

Now the question: Why IS there a special outer piston??

Edited by G-AMG 12/18/2008 3:19 PM

Hello G-AMG,

I asked this a specialist from Mercedes and he asked some other folks and searched in the Mercedes archives, but nobody there knows the function of the special outer piston. Only one had the idea, that is a noise reduction of the brake, perhaps.

But i will find it out.

Hans
#138768 - in reply to #138686
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Posted 12/20/2008 12:20 PM
nadd
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Date registered: Apr 2006
Location: UAE, Dubai
Vehicle(s): G55 ART LHD, numerous Chevys
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Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

Welcome to the forum Oldtimer, I am glad you found the time to join a significant part of the international G community online. You helped me with clearing up a petrol tank fuel level problem (loose hose) a while ago and your website has been a source of help and inspiration to a lot of people (especially that bit about installing 2 windshield washer nozzles on olders Gs).
#138792 - in reply to #135759
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Posted 3/28/2011 8:57 AM
petermerle
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Date registered: Apr 2006
Location: Cape Town ( deep south )
Vehicle(s): W460 *1, W123 *2, W124
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Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

EuroTruck - 12/18/2008 6:03 PM

 

Hello Bram,

 


For future reference, the seal rings for the brake fluid passages inside the caliper are p/n A 000 423 1560.  The seals are 10mm OD X 6mm ID X 2mm height.  MB does not recommend splitting the calipers on the G, but we all know that it can be safely and effectively done.  MB does allow the UNIMOG calipers to be split open, therefore, we keep dozens of these small rings in stock for the UNIMOG folks, and the EPC actually shows these rings along with the UNIMOG calipers.

http://www.eurotruck-importers.com/index.php?main_page=product_info&cPath=1_73&products_id=944

Now please, no more Suzuki parts on your G. 

Hope this help,

 

-Sean P.

 

Anyone know if the ATE caliper uses the same internal O ring as the Perrot Caliper? No part number is listed for ATE pistons - anyone know the part no for that ?

Peter

#187144 - in reply to #138614
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Posted 5/3/2011 6:44 AM
460332

Date registered: Apr 2006
Location: Europe
Vehicle(s):
500
Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

AFAIK the only difference between the ATE and Perrot calipers are the dust seals, the pistons are the same!
The Perrot (french) calipers are made to Mercedes specifications, i.e the enginnering around this seal should be the same.

For the 460 comes the ATE calipers comes in dual circuit and the later singel circuit, I don't think Perrot calipers followed the Gw's this late.


#189384 - in reply to #187144
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Posted 5/10/2011 4:45 PM
Razon



Date registered: Jul 2008
Location: Vancouver, BC
Vehicle(s): 1986 280ge Cabrio, 617A, 5sp manual
500
Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

When I bought my truck, it came with a set of new pistons, and seal kits ...ready to install. I have perrot brakes, but it turns out the kit must of been for ATE since not everything fit. Here's what I observed when I tried to install them

The pistons looked very similar...small difference in the area where the dust seal goes on. But they went in , no problem, so I'm using them.

The dust seals are different. The ATE ones must have a slightly larger diameter, because they were loose when I tried to install them on my calipers.

The ATE O rings have a perfectly rectangular profile/cross section. When I tried to install them in my Perrot calipers, it was quite hard to push the pistons back in (small parts of rubber also broke off of them)

It didn't feel right, so I bought the original Perrot dust seals and O ring kits. The O ring profile on the Perrot O rings is not rectangular, the inside corners are nicely beveled. With these O rings installed, the pistons went back in with very little effort.

The Perrot dust seals also went in nice, they just didn't like the fact that there was new paint on the calipers. I had to scrape the paint off before pressing them in place.


#189695 - in reply to #135759
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Posted 9/6/2020 11:03 PM
otiswesty
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Date registered: Jun 2007
Location: Portland, Oregon
Vehicle(s): 460 461 463
Posts: 2771
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Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

The previous Perrot brake pads I have also have a paper like layer facing the pistons. Many photos I have seen of new replacements are just painted metal there. Any one know if this matters, and should there be an additional layer there to protect or insulate the piston head surfaces?

Edited by otiswesty 9/6/2020 11:38 PM




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