Can someone please identify this caliper

[vmaxtrike]

Hello everyone im desperately trying to identify which caliper this is.

As you may have noticed ive snapped the bleed nipple and trying to get it out ive made it worse.

Ive no idea what mercedes use this caliper so trying to find a replacement is a nightmare not knowing the make, model and year of car.

Ive tried googling etc the serial numbers on the caliper with no success

Stamped on the caliper is Bendix 339 35 488 (489 on other side)

Ive also invcluded a pic of the brake pad to find indentification.

I take it the Merc symbol on the caliper is to do with Mercedes or is it just a coincidence?

So what id love to know is

1: what make, model and year use this caliper

2: is it a front or rear caliper

3: What size bleed nipple will I need

4: After knowing the 2 above points is there a caliper on the market which is an upgrade that uses the same mounting points.

These are on my trike so thats why I dont know any of the above

Any advice would be greatly appreciated

 

[Druk]

That pad looks the same as the front pad fitted to BL minis which also fitted the rear caliper of a W124 although for some reason squealed like a pig.

Yup. just dug one outa the spares in the garage. very similar to a 93 W124 320TE rear caliper.

 

[npuk]

Tried emailing Bendix? Eurocarparts sell Bendix calipers so may be worth a try asking them.

Also found this: http://www.bendixcatalog.com/Application.aspx?b=B

 

[grober]

My bet is that that ATE will have an equivalent you can use. Mercedes certainly used Bendix calipers in the 70's and early 80's

 

[Druk]

Is there a EuroCarParts near you? Ask to see a rear caliper from a W124 1993 320TE... just for comparisons sake. There were a couple of different suppliers so there are slight differences in design, but they will all fit the bolt centers.

 

[vmaxtrike]

Hi guys

Many thx for the replies and especially the picture as they look virtually spot on.

I have a local motorfactors so getting one to check wont be a problem.

As to Euro Car Parts, Cheap Car Parts - Euro Car Parts UK?s No.1 Car Parts Retailer I had a quick look

93 W124 320TE, does that come under a 300 series Merc, cant find no mention of W124 (please excuse my total ignorance of all things Mercedes)

Is the ATE caliper considered any better?

Your help so far has been great and I only wish I found the forum last week as its been giving me a right headache lol

 

[Druk]

W124 is the chassis classification. Collectively refers to the E class model produced between 1986 and 1996 (approx for the pedants) includes 200 230 260 280 300 and 320 + exotics. E is a saloon, TE is the estate car and I only listed that because that's the car my caliper came from...

If it's any help I'll post the critical dimensions of the caliper I have.

ATE is recognised as a top brand and is OEM.

This is a typical example FYI.

.




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[vmaxtrike]

Btw Druk

If you have that caliper nearby still can you check to see if there is a thread in the mounting holes as mine has but some of the stock pics you see online seem to be smooth.

 

[vmaxtrike]

W124 is the chassis classification. Collectively refers to the E class model produced between 1986 and 1996 (approx for the pedants) includes 230 280 300 and 320 + exotics

If it's any help I'll post the critical dimensions of the caliper I have.

That would be great

 

[Druk]

Btw Druk

If you have that caliper nearby still can you check to see if there is a thread in the mounting holes as mine has but some of the stock pics you see online seem to be smooth.

Well spotted. Mine has smooth holes so that rules it out. Sorry about that.

Checked the manual for the model prior to this (W123) and it looks the same. Might help if you could post a pic of the upright the caliper is bolted to. Maybe even the complete back axle or subframe of your trike.



.

 

[vmaxtrike]

Hi mate, not all is lost as im sure the thread holes were machined, not sure why as there is room behind to put a nut and even if I have to I can get the local machine shop to thread them for me.

My back axle is a home job but il take some pics when its stopped raining (its under cover)

in the mean time can you measure the distance in mm's between the 2 mounting holes (the closest point between the holes) as indicated in the pic and also the size of the hole itself to the closest mm.

 

[Druk]

Spoke to a Merc indie who specialises in older cars and he knew of no caliper that had threaded holes. He thinks they have been threaded to suit the application.

The holes are 10mm tight and the spacing 75mm <---> between centers. NB. not the closest point cos mine will differ from yours if yours have been machined out.

 

[vmaxtrike]

Thx Again Druk, ive not got my caliper as its at the garage though im going to drive over and measure it, I just measured one of the bolts and its 11mm, so as already mentioned its been machined to fit though il look to see if I can use a 10mm nut and bolt, on the standard Mercedes setup is a nut and bolt used to mount the caliper or are they mounted in such a way the bolt goes through the caliper into a machined fixing point.

 

[Druk]

Thx Again Druk, ive not got my caliper as its at the garage though im going to drive over and measure it, I just measured one of the bolts and its 11mm, so as already mentioned its been machined to fit though il look to see if I can use a 10mm nut and bolt, on the standard Mercedes setup is a nut and bolt used to mount the caliper or are they mounted in such a way the bolt goes through the caliper into a machined fixing point.

This is how^. Bolt points are extensions of hub carrier.

 

[Druk]

FYI. Took the bleed screw outa mine and it's standard 8mm metric thread. If you could get your machine shop to drill and easyout it, a new one is...A000 421 27 65 and the rubber cap...A000 421 71 87 from any Mercedes dealer or from here by post.

Mercedes-Benz Parts, Inchcape

 

[vmaxtrike]

Thx for all the info Druk, measured my other caliper today and its 75mm between centres, my holes were 10mm but have been machined to fit a 11mm thread though checked on the hub assembly and I have plenty of room to use a 10mm bolt and nut.

Also visited motorfactors and a rear caliper from a W124 1993 320TE is £60 + vat so not the end of the world and its also an ATE rather than Bendix

Hopefully find out tomorrow if my bleed nipple can be removed

 

[Druk]

One last thing. Some 124s had single plate rear discs and some had ventilated, which is the case with a 320. Not sure if the width between pistons is the same for all calipers so that's something else to bear in mind.
Are your discs ventilated?

 

[vmaxtrike]

Mine are singles, though not sure if the disk is mercedes related (thats the next thing to find out) The gap between the pistons if fully depressed is about 40mm on mine, about 44mm from piston housing lip to piston housing lip

 

[Druk]

Mine are singles, though not sure if the disk is mercedes related (thats the next thing to find out) The gap between the pistons if fully depressed is about 40mm on mine, about 44mm from piston housing lip to piston housing lip

The gap between pistons on mine is approx 55mm. the clearance gap for the disc to run in is 22mm. This looks to be a caliper specific to ventilated discs.
Try your factor for a caliper from a 1986 W124 230e or TE cos from memory this car had single plate rear discs. If not we'll try something else.
Also, a Mercedes rear disc is easily identified by having an internal drum for the handbrake to operate on. No question about this cos they're all the same regardless of year or model.

 

[vmaxtrike]

Glad you pointed that out mate, well done to you.

Mine are standard single disks, nothing there for hand brake operation, usual 5 holes, locating lug and hole for a securing screw.

put the pads in the caliper and I got about 15mm disk room maximum...

thx for the headsup regarding the earlier model of caliper, il find out next week when factors are open again.