460 1989 Merc Rear brakes bleed nipple
I have gone through my rear brakes getting them sorted ... new fixing kit for shoes is nice but the bottom spring in the MB kit is way too strong/short so I had to reuse the old one. (Note there are MB brakes and ANO brakes .. you need to know which one you have to get the right kit and MB cannot tell .. I found one Star on one of the struts plus the shape of the lower dust caps tells you which make they are).
Anyway.. I cannot get new brake bleed nipples from MB; and MB tech are at a loss. They supplied long M6 ones twice .. right length, wrong thread. I need M7 x39mm OAL ones.
They gave MA000 420 26 55 and MA00 420 51 55 which are both long M6 ones.
Anyone got any clues/hints?
PS.. other bleed nipples come with dust caps which is nice .. no need to order them seperately like me :(
PPS .. Merc Fitting kit is MA601 421 00 92 at £8.90+Vat which does both sides.
Motor factors surley, take the old one in with you, that is where I got mine when I needed them, nearest MB dealer is 50 mile away.
Marcus
From my epc A000 420 26 55 is for MB from axle # 741.516 k 015604 and A 000 420 10 55 for Perrot up to 741.516 k 015604 both Schaefer
A000 420 51 55 shows as a front caliper bleed valve.
You could try A00 420 10 55 its what’s listed for my 89 280
To reply to my own post a few years later .. after a bit of Google work.
On 1988 with MB Rear brake the bleed nipples are M7x1 x38mm which dealer cannot supply (Supplied MA000 420 26 55 is too short). You can get 3A0-611-475 from VAG which is a long bleed nipple (38mm) which is identical (this gives clearance to reach hex section without hitting pipe fitting).
Fitted to VW Caddy vans 1983-92 and Audi 80 1983.
http://www.vwheritage.com/vw_spares_Bleed-nipple-M7-x-1-38mm_act_shop.pr... £1.46 ea/2011
Cost that much from VAG dealer but it was not ex stock (next day delivery).
From my point of view, I have read, quite a few on the forum, present and past; to have changed rear brake springs whilst renewing the shoes.
Whilst that is good practice if you were to run a fast brake service business; so you reduce possibilities of any come back of any faulty work and more importantly to any business you increase sales and turnover figures.
In reality, this is not necessary, unless the spring is broken of severly corrodded, weakening it.
Cheers,
Hi
I know this is an old thread but just in case
The two types of shoes fitted to the rear are MB and PERROT and the name is stamped into the side of the shoes when you get them
off. The spring kits are MB A601 421 00 92 £10.70+vat currently and PERROT A002 586 32 42 £25.60+vat currently, MB have both
instock. One kit does both sides.
If i remember rightly you can tell which type are fitted by the way the handbrake cables attach to the drums, the MB type bolt onto the
drums and the PERROT type clip onto them.
As for the rear bleed nipple the answer is there are two types of cylinder SCHAEFER and TEVES. The SCHAEFER nipples are part
number A000 420 10 55 £8.80+vat each currently but the TEVES cylinders you cant buy the nipples for. The TEVES cylinder are
marked as ATE and the SCHAEFER ones usually unmarked.The cylinders are both interchangable but you cant buy the TEVES
cylinder A008 420 43 18 and only the SCHAEFER one A011 420 8818 £39.80+vat each. MB have stock
You must have had a TEVES (ATE) cylinder and the dealer had no chance of getting them for you.
Easy when you know how!!!!!????!!!!
Hi again
Maybe a long shot but the brakes on the old 307/308 van etc are a similar set up. The shoes and springs are the same, however most other parts are not.The cylinders are listed as a different number but again SCHAEFER and TEVES. The SCHAEFER nipple is the same number A000 420 10 55 and lists M6 but the TEVES also has a nipple available A000 420 86 55 £3.20+vat each available in MB Germany and this is listed as M7. Maybe these are the answer....
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Thanks for that Ernest.
Looking my invoices more closely;
MA000 420 10 55 = your car/recommendation = what they gave me to start with which is right length but M6 instead of M7 thread.
MA000 420 51 55 = a front bleed nipple for my car as you state.
MA000 420 26 55 = the second attempt they gave me.. same right length but wrong thread.
Confusion was caused as I managed to get £5 out of the dealer as they refunded me money on the wrong/more expensive front bleed nipple part number .. so you can get blood out of a stone!
I have got a couple of M7 from the motor factor (ta Marcus); a little wrong as the cone section at the front is too long so you get even less thread engagement than the already limited bit that engages (no lathe to turn down :cry: ) and while the MB allows for molegrips in later life due to their length .. don't try that with the motor factor ones.
Oh well .. seems we still have a mystery... surprised no one such as MB has suggested new Slave cylinders.. the expensive solution.