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Photo DIY- Front Caliper Rebuild- W460 Perrot
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Posted 11/9/2008 5:42 PM
G-AMG
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Photo DIY- Front Caliper Rebuild- W460 Perrot

Hey!

Well, since I have been spending so much "dead in the water" time, I figured I should get some other odds and ends done, including re-conditioning of my Calipers. When I changed the brake pads, I noticed the Dust Caps were a bit trashed, so why not renew things.

Apparently, if there is no rusting of the pistons and caliper bores, then these caliper can be rebuilt "several" times.

Please see the WIS comments about the treatment of Superficial Rust. I was surprised they allow ANY sort of polishing/sanding.

Of course, strict adherence to safety protocol must be observed due to the Mission Critical nature of the brake system.

I used the WIS for this job.

The only "hard" part of the job was removing the Caliper Bolts.

After you are done, bleed the brakes. Here is my DIY for it: http://www.pointedthree.com/disc/forums/showthread.php?tid=12456&po...

Personally, I did the RIGHT FRONT first, LEFT FRONT next, just to get the air out of the system, then I RE-DID all Four wheels in the usual RR, LR, RF, LF
pattern.



Edited by G-AMG 11/9/2008 7:37 PM




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#135759
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Posted 11/9/2008 6:46 PM
dentsmithy
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RE: Photo DIY- Front Caliper Rebuild- W460 Perrot

Funny, despite having tackled most jobs on my G wagen outside the engine I always felt the caliper rebuild was out of my comfort zone - thanks for showing that it's a pretty straight forward job.
#135764 - in reply to #135759
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Posted 11/9/2008 7:20 PM
DUTCH
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RE: Photo DIY- Front Caliper Rebuild- W460 Perrot

Photo 27 refers to ??
#135766 - in reply to #135759
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Posted 11/9/2008 7:21 PM
hipine



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RE: Photo DIY- Front Caliper Rebuild- W460 Perrot

DUTCH - 11/9/2008 5:20 PM

Photo 27 refers to ??


For the lower caliper bolt.

-Dave G.
#135768 - in reply to #135766
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Posted 11/9/2008 7:33 PM
G-AMG
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RE: Photo DIY- Front Caliper Rebuild- W460 Perrot

Yes, sorry Dutch, Pic 27 was referring to the RIGHT HAND CALIPER.

The Workshop Manual states: "For the Righthand side [caliper], use a commercial grade socket, shortened by 5mm". The anatomy on the right is slightly different than the left. But, having a 3" wobble extension gave the few degrees of angulation needed to negotiate the obstructions.

I was not in the mood to destroy a nice socket.......
#135769 - in reply to #135759
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Posted 11/9/2008 7:49 PM
03-Gwagen
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RE: Photo DIY- Front Caliper Rebuild- W460 Perrot

G-AMG --

Your DIY's are great. Thanks for the effort.
#135772 - in reply to #135769
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Posted 11/9/2008 8:39 PM
460332

Date registered: Apr 2006
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300
RE: Photo DIY- Front Caliper Rebuild- W460 Perrot

Eminent! I am impressed by all the Mercedes and ATE special tools.

(.. when will you clean that garage floor...

I'd split my calipers last summer and one of my pistons had rust, but I cannot remember which it was!
I only remember it was the most hollow one...? So, do you remember where the different Perrot pistons was placed?
Which type is on the outside of the caliperm, and which type is on the inside? I need to know when I place the order.
Maybe something to point out in your well documented procedure?

Does the manual say you should fill the seals with braking paste?

PS! The hole job is many times easier if you split the calipers, especially if you don't have all these tools!
Watch the small O-ring if disassembling!



#135775 - in reply to #135764
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Posted 11/9/2008 9:06 PM
G-AMG
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RE: Photo DIY- Front Caliper Rebuild- W460 Perrot

460332

Ugggg, Actually I just removed the pistons, and kept things organised such that everything went back into the same bores which they came from. Thus, I cannot answer your question, honestly.

Yes, the WIS says to fill the Dust Cap "Half way" with Caliper Paste.

Please read the attachment from the WIS about the "Splitting" of the Caliper halves. It seems to say that it is a "No, No".

Edited by G-AMG 11/9/2008 9:09 PM




(Caliper Warning.JPG)



Attachments
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Attachments Caliper Warning.JPG (274KB - 1 downloads)
#135777 - in reply to #135759
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Posted 11/10/2008 12:29 AM
petermerle
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Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

Impressive set of tools you have ! There was a thread a while ago how to take the job furthur and split the caliper.
PEter
#135782 - in reply to #135759
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Posted 11/10/2008 1:41 AM
Jonathan Joseph
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RE: Photo DIY- Front Caliper Rebuild- W460 Perrot

G-AMG

As always a great job of documenting the procedure. I'm concerned though that you went to all of this trouble to replace pads and rebuild calipers yet you neither mention nor illustrate the rotor? You measured the rotor to be within spec but that says nothing of the "condition" of the rotor surface. This is an integral part of the brake systems ability to function up to spec. Many would argue that machining the rotors is necessary at every pad change. I would say it is definitely necessary at the point at which the calipers need rebuilding. Some will argue that machining is not appropriate only replacement is correct. Mercedes says you can turn the rotors until they are down to 13mm. I'm a fan of spending $30 to machine instead of $200 to replace, and have never had a problem with in-spec machined rotors, of course I don't race cars. If you have not done this I would recommend it before you put any miles on the truck as the uneven surface of the rotor will quickly translate to an uneven surface on the pads. Then you really need to turn the rotors and get "another" new set of pads to match. Also sometimes the surface of the rotor is smooth but "glazed" I'm no metallurgist so I can't describe what has happened to the metal but the heat and pressure will combine to make the surface of the steel especially polished and slick, also not contributing to good braking. If the rotor is not scored or rough a very light pass on the lathe will remove this glaze.

Jonathan
#135785 - in reply to #135759
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Posted 11/10/2008 1:43 AM
bram_r
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Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

I do wonder why they call for new bolts for mounting the caliper, do they want to make sure Loctite is used (new bolts come pre-loctited)? Can't image such a heavy fine-thread bolt failing.

Bram
#135786 - in reply to #135759
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Posted 11/10/2008 1:57 AM
Jonathan Joseph
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RE: Photo DIY- Front Caliper Rebuild- W460 Perrot

I agree Bram, I've re-installed more calipers than I can count, never used lock-tite, almost never used new bolts, never heard of a caliper coming loose. Not one I installed or any other. That being said there is certainly no harm in doing it the recommended way, but if I had to wait more than an hour to get the parts you can be sure it would go back together with the old bolts, and I'd sleep fine at night.


Jonathan
#135787 - in reply to #135759
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Posted 11/10/2008 8:44 AM
Roly
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RE: Photo DIY- Front Caliper Rebuild- W460 Perrot

I replaced the bolts when I replaced my calipers. The main reason was to ensure that I would be able to get them off again in the future. The heads were fairly rounded by the time I had got them off. Couldn't imagine tackling the job with rounded heads. MB sold them at about £4ea.
#135807 - in reply to #135787
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Posted 11/10/2008 9:21 AM
G-AMG
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Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

JJ- Yes I did have the Rotors "Turned" when I did the Pad change. This was only a few thousand miles ago. I just didn't want to tackle the Caliper job at that time.

In regards to the Bolt Change conterversy-- I know this topic was heatedly discussed a while back. I think there was a 50/50 split as to New/Reuse.

I recall Roughneck describing the tremendous stress on the bolts both during placement, and while in service. For a few extra bucks-- it helps me sleep better at night.....
#135808 - in reply to #135759
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Posted 11/10/2008 9:38 AM
DUTCH
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Caliper Bolts

G-AMG - 11/10/2008 9:21 AM

JJ- Yes I did have the Rotors "Turned" when I did the Pad change. This was only a few thousand miles ago. I just didn't want to tackle the Caliper job at that time.

In regards to the Bolt Change conterversy-- I know this topic was heatedly discussed a while back. I think there was a 50/50 split as to New/Reuse.

I recall Roughneck describing the tremendous stress on the bolts both during placement, and while in service. For a few extra bucks-- it helps me sleep better at night.....


I concur. I find it amusing to read how many folks think they know better than the Daimler engineers - all to save a couple of dollars. And as far as only using new when there's immediate availability of the part, I think it's called planning ahead.

I'm getting ready to replace the front rotors on my G500; and those caliper bolts will be included on the parts order for the job.
#135809 - in reply to #135808
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Posted 11/10/2008 6:16 PM
bram_r
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RE: Caliper Bolts

DUTCH - 11/10/2008 3:38 PM

G-AMG - 11/10/2008 9:21 AM

JJ- Yes I did have the Rotors "Turned" when I did the Pad change. This was only a few thousand miles ago. I just didn't want to tackle the Caliper job at that time.

In regards to the Bolt Change conterversy-- I know this topic was heatedly discussed a while back. I think there was a 50/50 split as to New/Reuse.

I recall Roughneck describing the tremendous stress on the bolts both during placement, and while in service. For a few extra bucks-- it helps me sleep better at night.....


I concur. I find it amusing to read how many folks think they know better than the Daimler engineers - all to save a couple of dollars. And as far as only using new when there's immediate availability of the part, I think it's called planning ahead.

I'm getting ready to replace the front rotors on my G500; and those caliper bolts will be included on the parts order for the job.


oh well, it's not so much I'm trying to outsmart the MB engineers or save that little money, I was thinking of the reason why they call for new ones:
- is it because of the stress in the bolt and risc of failing when re-used
- do they want to be sure Loctite is used, i.e. when installing a new bolt, there's always loctite on it as it comes that way ex-MB.

Since there're plenty of other bolts on a G that are torqued pretty hard and don't have to be replaced when parts are removed/installed.
I agree, when you're planning a front axle rebuild, order those bolts as well. At the same time, I wouldn't mind reusing them when I don't have those at my disposal.
I also don't know of other brands of cars that have this stated in their caliper rebuild procedure.

Bram

p.s. and for removing stuck brake pistons and rebuilding properly, I also splitted the calipers more than once. Again, wouldn't know why MB is giving this a no no.
#135829 - in reply to #135809
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Posted 11/11/2008 12:40 PM
G-AMG
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RE: Photo DIY- Front Caliper Rebuild- W460 Perrot

I think there is more to it than JUST the Loctite issue.

I probably should have taken pictures of the new bolts, but the TOP bolt has NO Loctite applied!! Sooo, I believe there is "another" reason why the experts at DB are requiring replacement.
#135861 - in reply to #135759
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Posted 11/11/2008 6:49 PM
bram_r
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RE: Photo DIY- Front Caliper Rebuild- W460 Perrot

G-AMG - 11/11/2008 6:40 PM

I think there is more to it than JUST the Loctite issue.

I probably should have taken pictures of the new bolts, but the TOP bolt has NO Loctite applied!! Sooo, I believe there is "another" reason why the experts at DB are requiring replacement.



for my current front axle / caliper rebuilt I got new bolts waiting to be installed. Sometimes it would be so interesting to talk to the MB engineers and ask for reasons behind certain design features or maintenance procedures.

Bram
#135881 - in reply to #135861
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Posted 11/11/2008 8:44 PM
nadd
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Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

As always, love the photos...gives me something to aspire to in my collection
#135891 - in reply to #135759
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Posted 11/12/2008 1:32 AM
elevatorbernie
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Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

I would guess that the bolts are one time only because they become deformed when torqued to spec. and if reused, the proper holding abilitilty may be compromised even if re-torqued to spec. again.
#135897 - in reply to #135891
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Posted 11/12/2008 11:51 AM
4x4abc



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RE: Photo DIY- Front Caliper Rebuild- W460 Perrot

Patrick,

the upper and lower bolt for the 460 and, 461 and early 463 have different torque numbers. Possibly the WIS is wrong and later 463 have different torque values as well.
Could not check the WIS - my Windows machine died (man, I love my MACs!), but the pre WIS paper version gives the wrong torque number for the Loctite bolt (14x1.5) and does not acknowledge 2 different bolts. Don't know if the late model 463 have two different size bolts - early 463 had 16x1.5 and 14x1.5 (like the 460 and 461).

the paper manuals only indicate use of new bolt for the smaller Loctite bolt - not the larger 16x1.5 bolt.

Edited by 4x4abc 11/12/2008 11:56 AM




(460.jpg)



(early 463.jpg)



(later 463.jpg)



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Attachments 460.jpg (83KB - 2 downloads)
Attachments early 463.jpg (61KB - 2 downloads)
Attachments later 463.jpg (68KB - 2 downloads)
#135929 - in reply to #135759
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Posted 11/12/2008 12:29 PM
G-AMG
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RE: Photo DIY- Front Caliper Rebuild- W460 Perrot

Yes, Harald, I did use the WIS, and it showed DIFFERENT values between the W463, and the W460. Off the top of my head, I think the W463 was something like 280 for the BOTTOM, and 220 Nm for the TOP.

For the W460, it specified 265 Nm for TOP AND BOTTOM.

I guess the WIS could be wrong. From memory, the "update" Date on the WIS page was July 1997.

The date on the bottom of my German Manual is 1986. This is why I opted to go with the updated 1997 Values.
#135933 - in reply to #135759
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Posted 11/12/2008 12:51 PM
DUTCH
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Torque Values - 02/2008 WIS

Bolt: Fixed Caliper to Steering Knuckle: 265 Nm for 460, 461 & 463

Bolt: Fixed Caliper to Joint Housing, M14: 220 Nm - 463 only.

Bolt: Fixed Caliper to Joint Housing, M16: 280 Nm - 463 only.

"Replace Bolts" in all cases.
#135938 - in reply to #135933
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Posted 11/12/2008 1:33 PM
4x4abc



Date registered: Apr 2006
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RE: Torque Values - 02/2008 WIS

Steering Knuckle = Joint Housing?
if not, what is the Steering Knuckle?
#135944 - in reply to #135938
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Posted 11/12/2008 2:10 PM
DUTCH
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RE: Torque Values - 02/2008 WIS

4x4abc - 11/12/2008 1:33 PM

Steering Knuckle = Joint Housing?
if not, what is the Steering Knuckle?


Not sure. It's the nomenclature used in the attached WIS document.



Attachments
----------------
Attachments Brake Caliper.pdf (115KB - 19 downloads)
#135948 - in reply to #135944
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Posted 11/13/2008 3:49 PM
elevatorbernie
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Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

elevatorbernie - 11/11/2008 10:32 PM

I would guess that the bolts are one time only because they become deformed when torqued to spec. and if reused, the proper holding abilitilty may be compromised even if re-torqued to spec. again.
#136002 - in reply to #135897
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Posted 12/16/2008 6:08 PM
bram_r
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RE: Photo DIY- Front Caliper Rebuild- W460 Perrot

While rebuilding my Perrot front calipers, I splitted the calipers for proper removing and cleaning of the brake cylinders and bores.
I know this isn't recommended by Mercedes and so also the 'square' o-ring that seats between the caliper halfs isn't servicable.

I know from some Suzuki brake rebuilds I did, that the same kind of o-ring is used. Ordered some and these fit ok in the Mercedes calipers. I measured the new Suzuki one with the old Mercedes one, but the Mercedes one was a little deformed after 25 yrs of compression I think, All dimension (inner and outer diameter and thickness were not more than 1 or 2 tenths of millimeter difference . Anyway, my Suzuki o-rings fitted the small bore in the M-B caliper ok, so I will mount these and put them to the test.

pn. Suzuki is 69107-34200, price about $7,- / piece.

Bram



(DSCN7429p.JPG)



Attachments
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Attachments DSCN7429p.JPG (89KB - 2 downloads)
#138443 - in reply to #135759
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Posted 12/16/2008 6:16 PM
bram_r
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RE: Photo DIY- Front Caliper Rebuild- W460 Perrot

Need your help/experience on the following, those Perrot dust seals kind of easily flop off the ridge on the calipers.
I don't have that special tool G-AMG is showing, but even if I press them on hard (even with mallet) I can see them creeping slowly upwards (the brake paste isn't helping much either). Don't dare using too much force since I'm afraid to damage the seal.
Anyway, even the ones that stay on, I feel changes are pretty good a few of them pop off during brake action.

What is a good way to make these seals sit tight on the calipers?

Thanks for your advice.

Bram
#138445 - in reply to #135759
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Posted 12/16/2008 9:45 PM
G-AMG
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Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

Bram,

I remember JJ having trouble like you describe.

Here was his nice "home-made" tool which seemed to solve the problem:

http://www.pointedthree.com/disc/forums/showthread.php?tid=11564&po...

Be sure you pack the "moat" half-way with the Paste.

Good Luck!
#138463 - in reply to #135759
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Posted 12/17/2008 7:26 PM
bram_r
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Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

G-AMG - 12/17/2008 3:45 AM

Bram,

I remember JJ having trouble like you describe.

Here was his nice "home-made" tool which seemed to solve the problem:

http://www.pointedthree.com/disc/forums/showthread.php?tid=11564&po...

Be sure you pack the "moat" half-way with the Paste.

Good Luck!


thanks for the link, however, new questions have emerged haha, but seriously:

Framenumber of my 1982 300GD is 460-323-17-021789
Front-axle number is 7013455
Front calipers are Perrot.

I was rebuilding my brakes and used the EPC to order a brake rebuild set:

- clicked no. '32' at FrontBrake overview;
- then ordered A 000 420 66 83 for a complete set incl. pistons. Note: A 000 420 68 83 is the seal kit for Perrot brakes. I figured A 000 420 66 83 would be the Perrot seal kit incl. the pistons.
- see pic for my dust seals. Looking at topic of http://www.pointedthree.com/disc/forums/showthread.php?tid=11564&po... and http://www.hehlhans.de/bilder/autos/g240/bremsevo/repsatz1.jpg I believe I got the wrong seals.
- went to the M-B dealer. Couldn't find anything wrong with my ordering process. The complete pn. on my 'rebuild kit box' is A 000 420 66 83 0064 btw.

Questions are:
- what should be the pn. for the Perrot rebuild kit. Did M-B mess up or what?

thanks,

Bram








(epc_bremsen2.jpg)



(epc_bremsen.jpg)



(epc_bremsen3.jpg)



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#138546 - in reply to #138463
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Posted 12/17/2008 9:21 PM
G-AMG
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RE: Photo DIY- Front Caliper Rebuild- W460 Perrot

Hmm,

I looked back on my post. I try hard to get part numbers and things in the photos, for circumstances such as these...

Looking back, the part# I used on MY PERROT calipers was: 000 420 68 83



(18.JPG)



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#138556 - in reply to #135759
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Posted 12/18/2008 2:10 AM
bram_r
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RE: Photo DIY- Front Caliper Rebuild- W460 Perrot

G-AMG - 12/18/2008 3:21 AM

Hmm,

I looked back on my post. I try hard to get part numbers and things in the photos, for circumstances such as these...

Looking back, the part# I used on MY PERROT calipers was: 000 420 68 83


Yes, and indeed the correct seals you got.
But what should be my pn. if I want the complete rebuild kit for Perrot calipers.
Assumingly, my rebuild kit pn. 000 420 66 83 (seals plus pistons that is) is showing wrong type of seals.

My dealer has got some info from his part-sources today as well.
He'll be ordering two sets of 000 420 68 83 now. I can use the dust seals of this kit, and probably return my wrong seals and it will be marked as an EPC flaw.
This will get me at least my Perrot seal kits for free.

Still it would be nice to know what the pn. of the Perrot rebuild kit should be.

Bram

Edited by bram_r 12/18/2008 3:35 AM
#138585 - in reply to #138556
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Posted 12/18/2008 7:07 AM
Inkblotz
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Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

Here is the Perrot rebuild kit at Eurotruck: http://www.eurotruck-importers.com/index.php?main_page=product_info...


RE the caliper bolts: Elevatorbernie came closest to the answer. I had read somewhere that the bolts used are referred to as stretch bolts and they will deform when torqued. Allowing them to grip better? I do not know the exact science of this as I a pulling it from memory.

Mark

Edited by Inkblotz 12/18/2008 7:20 AM
#138591 - in reply to #135759
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Posted 12/18/2008 8:50 AM
bram_r
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Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

Inkblotz - 12/18/2008 1:07 PM

Here is the Perrot rebuild kit at Eurotruck: http://www.eurotruck-importers.com/index.php?main_page=product_info...


RE the caliper bolts: Elevatorbernie came closest to the answer. I had read somewhere that the bolts used are referred to as stretch bolts and they will deform when torqued. Allowing them to grip better? I do not know the exact science of this as I a pulling it from memory.

Mark


the Perrot seal kit is not a problem, that's pn. A 000 420 68 83.

Question is: when ordering a complete rebuild kit for Perrot calipers (incl. brake pistons), what is the M-B order number?

Bram
#138600 - in reply to #138591
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Posted 12/18/2008 9:40 AM
G-AMG
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RE: Photo DIY- Front Caliper Rebuild- W460 Perrot

Bram,

Sorry, now I understand what you mean, you are looking for the WHOLE set, not just the Rubbers..

Well, here is the EPC for my VIN. If you give me yours, I'll run your number.

But, I am wondering if your Axle number may be BEFORE the footnoted axle numbers.

Thus, the A 000 420 66 83 part number DOES NOT APPLY TO YOUR TRUCK.



(Caliper.JPG)



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#138602 - in reply to #135759
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Posted 12/18/2008 10:21 AM
bram_r
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Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

thanks for the effort.

as listed in my post above, my G data:

[ Framenumber of my 1982 300GD is 460-323-17-021789
Front-axle number is 7 013455
Front calipers are Perrot. ]

Per the footnote, my front axle no. is in the 7 000001 - 7 063900 range, so it should be the right set..?
I mean, at the M-B dealer this set is also what they would come up with.

Bram

#138606 - in reply to #135759
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Posted 12/18/2008 10:30 AM
petermerle
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Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

There is no such "kit" listed on EPC
Peter
#138607 - in reply to #135759
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Posted 12/18/2008 10:45 AM
G-AMG
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RE: Photo DIY- Front Caliper Rebuild- W460 Perrot

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

Here are the numbers.



(Pistons.JPG)



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#138609 - in reply to #135759
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Posted 12/18/2008 11:03 AM
EuroTruck
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Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

bram_r - 12/18/2008 8:50 AM  Question is: when ordering a complete rebuild kit for Perrot calipers (incl. brake pistons), what is the M-B order number?

 

 

Hello Bram,

 

There is no complete repair kit, including pistons, for the Perrot / WABCO calipers, at least not that I know of.  You must order the seal kit and pistons separately.

Repair kit A 000 420 6683 applies to part numbers A 003 421 4998 and A 003 421 5098, which are TEVES / ATE calipers.

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.

#138614 - in reply to #138600
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Posted 12/18/2008 11:29 AM
bram_r
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Re: Photo DIY- Front Caliper Rebuild- W460 Perrot

EuroTruck - 12/18/2008 5:03 PM

bram_r - 12/18/2008 8:50 AM  Question is: when ordering a complete rebuild kit for Perrot calipers (incl. brake pistons), what is the M-B order number?

 

 

Hello Bram,

 

There is no complete repair kit, including pistons, for the Perrot / WABCO calipers, at least not that I know of.  You must order the seal kit and pistons separately.

Repair kit A 000 420 6683 applies to part numbers A 003 421 4998 and A 003 421 5098, which are TEVES / ATE calipers.

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.



thanks guys, for all your help,

Since I never had any EPC problems/flaws before, I knew there had to be something...
Strange I find that they list in the seal kits 'for Perrot' or 'for Teves', but for the complete rebuild kit they refer to partnumbers. While CD-EPC doens't allow reverse-search on partnumber, a little tricky to find out this 000 420 6683 kit isn't applicable to Perrot brakes. Even M-B dealer and their EPC help-desk didn't come up with this info. Should be a 'footnote' at least I'd say. Especially since the calipers have so clearly casted 'Perrot' in them, it was my reference together with the axle number.

Thanks as well to those passage o-rings. I haven't mounted the Suzuki rings yet, so will go for the M-B rings for good measure.

Anyway, got two sets of 000 420 6883 seal kits today so work can continue on the brakes. The M-B dealer asked me to return the 'wrong' seals for making a credit for that. Otherwise lesson learned I'd say.

Bram
#138618 - in reply to #138614
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Posted 12/18/2008 12:40 PM
petermerle
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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
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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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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
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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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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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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
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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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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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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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