Technical Front Caliper Type?

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Technical Front Caliper Type?

widemouthfrog

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Can some kind soul tell me which type of front brake caliper I've got (Bosch or ATE)?:

2011-08-29_18-22-19_598.jpg
 
I just changed my discs and pads at the weekend, and I took some photos first (although right-hand side, not left-hand side like your photo).
Mine are Bosch:
DSCF0180.JPG
If you take the wheel off, the Bosch identification is easy to see:
DSCF0181.JPG
 
Thanks chr1s. Knowing where to look once I'd seen your pics, I managed to slide a bit of plastic mirror twixt caliper and alloy and shine a torch on it; Bosch it is.

How did you get on with the disc and pad change?
 
It was all quite straightforward, once I had the tools around me and the tightening torques. It took me just over an hour for each side.

* Jack up the car. Remove the wheel. Support the car on an axle stand.
* Slide the rubber retainer for the brake pipe out of the bracket on the suspension damper.
* Disconnect the brake pad wear cable (LH side only) - my cable is sliced off anyway !
* Remove the spring holding the caliper to the bracket.
* Remove the two rear bolt covers (plastic). Undo the bolts underneath (mine required a 7mm Allen key).
* Remove the caliper and support it (I used an axle stand, but you could suspend it from above - but not by the brake pipe).
* Undo the two fixing bolts from the caliper bracket (19mm socket on mine). Remove the bracket.
* Undo the two disc retaining pins (12mm ring spanner on mine). Remove disc.
* Remove the brake pad on the opposite side to the piston.
* Compress the piston to make space for the new pads, using a clamp/clamps against the old brake pad.
* Take care to remove excess brake fluid as the piston is slowly pushed back in (I spooned it from the fluid reservoir).
* Remove the remaining brake pad from the caliper.
* Refit in reverse order (fitting new brake pads, with anti-squeal paste and copper grease):
disc retaining pins - tighten to 12Nm (I had to guess, using a ring spanner, but you may have a deep 12mm socket).
caliper bracket bolts - tighten to 105Nm.
caliper bolts - tighten to 24Nm (I had to guess, using an Allen key, so an Allen socket would have been better).
 
Does anyone know if the carrier for the front brakes is common to both the ATE and Bosch calipers?

The inside faces of both discs on my car a corroded and don't look like they're seeing much 'pad action'. As the calipers are single piston, I think that may be a sign that they aren't moving on their pins as they should.

Eper (on here) has got a bit of a mental block on the pages for front brakes for some reason so even if I put my chassis number in I can't see any part number info. I've found a place online that sells slider refurb kits (including new pins) but they won't commit when it comes to advising compatitbility with caliper type.
 
Just got a front Caliper repair kit for mine, from BiggRed.
The brakes were making a graunching sound under hard braking.
Thought it might be a bit of grit stuck in a pad at first, as all the pads had plenty of meat on them.
When I took the left wheel off though, there was a narrow band scored in the wheel where the caliper had been rubbing.
I'd assumed that the bushes for the sliding bearer pins would be plastic, but they're just rubber, so with a bit of wear, and them softening up over time, it allowed the caliper body to move outwards enough under braking to touch the wheel. (n)

I machined up a couple of replacements on my lathe from Black Delrin platic (Engineering Acetal Homopolymer), as a temporary fix.
 
Mmmm, that sounds very much like mine. Think I'll have to take the wheels off and have a look this weekend. Mine occasionally graunch under braking, but I also get a faint rubbing sound from the front nearside when I'm turning right (sounds tinny metallic, like a stone trapped against a disc guard, but I've checked and there's no stone in there....)

I had a look at the BiggRed kits but could only see them for ATE calipers. I've got Bosch calipers.

Where was the play on yours? Were the slider pins themselves worn or corroded?
 
The pins are fine on mine, I cleaned them up a while ago, and coated them with Dry Film Lube.
The play was totally down to the state of the rubbers.
Use a screwdriver to try and lever the body of the caliper outwards, levering against the carrier.

The BiggRed website lists repair kits for both Bosch and ATE calipers (1.9 JTD 155, 110, and 105, and the same for all the 1.6 petrols).

http://www.biggred.co.uk/catalogue.php

Their ebay site doesn't quote Bosch in the description, but this is the kit you want I believe...
http://www.ebay.co.uk/itm/Fiat-Stilo-Multipla-Brake-caliper-repair-kit-203854-/270823657614?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3f0e59108e#ht_4824wt_1163
 
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Once you have the pads out and discs off - clean everything up. Especially the contact patches on the caliper hanger where the pads contact.

When replacing the pads, re-assemble with copper grease on all contact areas between pads and caliper hanger. If the pads dont slide along the caliper hanger with the disc out, then file down the surfaces on the pads then protect the bare metal with copper grease.

The pins need to be cleaned of all pad dust with scotchbrite and greased with something like dry film lube.

You would be unlucky to need to replace any parts. A thorough job when changing the brakes should solve it.
 
the photos are both ATE callipers not Boshe.... you can see the "micky mouse ears" clearly
 
the photos are both ATE callipers not Boshe.... you can see the "micky mouse ears" clearly

If you're referring to my photos, in post #2 , then I beg to differ. Look at the top left of the caliper in the second photo - the name BOSCH is very clear (if upside down in the photo) !
 
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I am pretty sure that you can see the curly script ATE logo on the calliper next to Boshe in that photo. Ie it says Boshe on ATE callipers.
I think anyone would be confused by this.
The Pad shape is the best way to tell the difference.

I found this it shows it better:

You'll get a pretty good idea of what the pads will be like by looking at the inner and outer faces of the discs.

BTW, these are my (ATE) calipers after they had been refurbed. Note the confusing markings!:

IMG_4827.jpg
 
Fair enough. But I am still confused why ATE include the name BOSCH on their calipers.

From their website http://outcat-cs.tecdoc.net/ows/en/7707C590D44DF6433B2B80447BA7DBC0.ows_cs4.srv;jsessionid=7707C590D44DF6433B2B80447BA7DBC0.ows_cs4?view=VIndexFramesetJsp , it appears that they supply calipers for both the ATE brake system (up to 09/2004) and the Bosch brake system (10/2004 to 02/2008). I'm not too sure which system mine uses, as it is a nosejob but registered 12/2004.
Do they include Bosch on their calipers just for the, later, Bosch brake system ?

ATE Calipers.jpg
 
It doesn't seem to follow any date order. Like you, I got very confused by the names on the calipers - bought a set of Bosch pads (anyone want a set of Mintex pads, still in the box?) as I saw 'BOSCH' cast into the caliper, only to find that I needed the ATE ones . As photoboy says, the giveaway is that the ATE pads have 'ears' on them, the Bosch ones don't, so rather than looking at the caliper, it's best to look at the pads you want to replace (you can see them from under the car without having to remove anything):
 

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It doesn't seem to follow any date order. Like you, I got very confused by the names on the calipers - bought a set of Bosch pads (anyone want a set of Mintex pads, still in the box?) as I saw 'BOSCH' cast into the caliper, only to find that I needed the ATE ones . As photoboy says, the giveaway is that the ATE pads have 'ears' on them, the Bosch ones don't, so rather than looking at the caliper, it's best to look at the pads you want to replace (you can see them from under the car without having to remove anything):

Mine has ATE calipers. Bosch is not on the casting, as my front calipers are still fairly new in reality.

The picture to me of the bosch pads, look like rear pads, as rear pads mostly have stubby locaters.
 
They're definitely the front pads. I can't get a direct link to the destination page to work, but if you go here:

http://de.bosch-automotive.com/part...rakes_1/disk_brakes/brake_pads_1/brake_pads_1

then click on 'eCAT' and fill out the search page (tick the 'enlarge vehicle fleet to all countries' box), it will show all Bosch parts available for the Multipla, including pictures of the front and rear pads. The rear ones are similar in appearance but quite a bit smaller.
 
Hi I'm new to the club just need some advise as my bug needs new front pad and discs u stated Bosch is visible but so is the ATE sign as it is on my caliper so how do I know wat pads to buy as both Bosch and ate are printed on the caliper I'm confused do I buy Bosch or ate pads my reg is a x reg
 
Thanks mine r ate by the pictures srry didnt see pics when on first time still trying to navigate the site many thanks for the help
 
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