Need size of brake blead screws . W124

[DREAMER NO2]

It is not very often that i post for myself . Story goes,, its time for me to replace my brake fluid . And i think the best way forward for me ,,is to purchase a set of caliper Speed Blead Nipples . For those who dont know what these are they will replace the normal blead nipples to make the bleading of the brake system easy for one person to do on his own . I found a set, but need to make sure the size of the blead nipples are right . So is there anyone on the forum able to verify the correct size please .

 

[LostKiwi]

Bleed nipple size on Front and Rear Calipers W124 260E

Need help to verify the size of the caliper bleed nipples ..I have check as much as i can ,,but come up with conflicting sizes . I think they are both the same on the front and the rear calipers so one size for all four . I get this size > M8 X 1.25 MM part number > A 000 421 2765...

forums.mercedesclub.org.uk

 

[DREAMER NO2]

Well i had no idea i had answered my own question .

 

[DREAMER NO2]

LostKiwi i know i had asked this before .But so much going on this last 12 months with this covid . I forgot all about my early post i asked some time ago And because the car was covered up i put it to one side . So the caliper bleed screws are one size front and rear . I found a guy on facebook seling set of new Stahlbus bleed nipples size M8 X 1.25 £50 for 4 .I checked up on the price £21 each without the protective caps . I will go for them .Thanks .

 

[LostKiwi]

LostKiwi i know i had asked this before .But so much going on this last 12 months with this covid . I forgot all about my early post i asked some time ago And because the car was covered up i put it to one side . So the caliper bleed screws are one size front and rear . I found a guy on facebook seling set of new Stahlbus bleed nipples size M8 X 1.25 £50 for 4 .I checked up on the price £21 each without the protective caps . I will go for them .Thanks .

It's ok mate... We all have senior moments

 

[DREAMER NO2]

Yes but i have more than my share . And i am my own enemy .. Just been on to Stahlbus bleed valve site ..All information i can find is all the W124 are M8X1.25 with a part number SB110313 that includes 4 bleed valves . But i can find no information on the rears its all front sizes .So i sent an email to make double sure ...

 

[Mark A]

Check out brakeparts or big red, they should list bleed nipples for your calliper.

 

[DREAMER NO2]

Big Red is close to me but they service and paint calipers .And i want Stahlbus Speed Bleeders . And as i said above i found a set, i just need to know if they fit, so i sent the company Stahlbus an email . I found the ones on their web site but in said nothing in the list about rears only fronts .

 

[EmilysDad]

Big Red is close to me but they service and paint calipers . ....

They sell bleed nipples too .... though realise not what you want

http://www.biggred.co.uk/bleed-screws

 

[DREAMER NO2]

EmD I have been doing this caliper bleed thing for 2 years now and i wont give up this time till i have a set in the calipers . I been purchasing parts over the winter to do jobs on the car i have 4 out standing job now ..Thes bleeders will make 5 . Manifolds coming off for sand blasting so then i can replace the studs and holding nuts for new ones . Auto box service , all the bits in the garage . New fuel pumps to be fitted those are Bosch ..Replace the hydraulic tappets ..So i will have lots to do soon ....

 

[DREAMER NO2]

Sorted it now thanks to all of of you that helped .. it only took me 3 hours to be 100% sure . They are M8X1.25 front and rear .

 

[EmilysDad]

Sorted it now thanks to all of of you that helped .. View attachment 66564 it only took me 3 hours to be 100% sure . They are M8X1.25 front and rear .

but how long?

 

[DREAMER NO2]

ED all on tha chart i sent reads 20mm

 

[DREAMER NO2]

Stahlbus sent me an email yesterday to say ,,they would not advise me to use their M8X1.25 20mm on the rear calipers . And they said ok to use them in the fronts only, and they have no information to say they can be used in the rear calipers .. They did say it would be best to have longer bleed nipples than 20mm . The attachment i posted above of the fitting list is not any good Stahlbus say is old information. Well thats no good,, its all or nothing ,,,what a company . . The best i can do is to pick up a set of old ones and check the sizes of them. The length of the thread on the base is the main size i need including the cone .

 

[DREAMER NO2]

I need to know the length of the thread on the original nipples where they screw in to the brake calipers . That wuill make finding a set easy .

 

[EmilysDad]

I need to know the length of the thread on the original nipples where they screw in to the brake calipers . That wuill make finding a set easy .

is it worth buying a new one from MB ??? They surely can't be more than a couple of quid each

 

[DREAMER NO2]

Yes i know but the guy selling the new set Stahlbus nipples wont hold them any longer than today so i will be late getting a new one from mb .My friend owns a shop on Ebay who i asked Thursday to pull one out of a W124 caliper and take the size of te thread for me . After very litte information other than you people ...on these i think no W124 owner as ever done any brake work

 

[DREAMER NO2]

Sent for a set of Ebay just for the thread size alone .