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MG Midget and Sprite Technical - Brake Master Cyl Cap
|I am looking for a replacement master cyl cap to use with my Easibleed. Unfortunately the brake master fitted to my frog is non standard with a large reservoir and as far as I can see it is marked Lockheed XXX-405C (3/4"). Can't reliably read the XXX but it might be 3211|
The cap looks like around 80mm diameter over the thread.
Does anyone recognise that as an MG part - the indication is that it might be a type used on the later midgets?
gunson don't seem to supply a range of caps anymore but offer a universal cap. I really don't like the look of that as anyone who has used the Eezibleed knows the risk and consequences of a pipe or cap coming off!
|This is what's on my late 1500 http://www.ebay.co.uk/itm/BRAKE-MASTER-CYLINDER-CAP-AAU3815-AP-4325-148P-/141964608438?hash=item210dc003b6 which has a different code.|
I didn't trust the universal cap either, so bought one of these, drilled through the little vent hole and used that. I did find that the cap was in two parts so had to loose the 'inner cap' to make it work
|Timmy k: does that look like 80mm across the thread?|
The master cyl must have been changed when disks were fitted in the past and the cap is very large in comparison with the norm. It is only a single circuit not that that should affect the size of the cap.
|yes ~80 ID, 90 OD - you can see it in the photo (with the Haynes page behind) - I think its standard for the late model dual circuit cars.|
Whereabouts are you - i'm in Broadstairs if you want to borrow it - or I can post it, it's very light
|Or you could both get together at the East Kent Masc meeting at the Crown, Sarre, this coming Sunday.|
|A visit to a car breakers yard should get you one, or several. And probably at zero cost.|
|Timmy - would you be able to get to the Sarre meeting as Alan suggests. I had been wondering about going anyway as the weather looks promising!|
Here's a tip you might want to think about - I cant take the credit as it was not my idea, so I will quote it direct from the MGA archives
"I have my own trick with Eezibleed that avoids the mess. It slows proceeding down though. I have the 1600 extension on my MC so there is plenty of capacity in there for doing one brake at a time. Therefore I never fill the Eezibleed bottle with fluid. I just let the MC fluid level drop. After doing one brake I top it up again, wait for it to settle then continue with next brake. - Steve"
Sounds like a clever idea to me-using the eezibleed bottle as an air chamber only.
Good luck, Graham
|Graham: I think I remember reading that. Because I work off the floor moving from one wheel to the next is quite laborious so refilling between wheels wouldn't really be an issue. I'll give that a try! Thanks for reminding me. Better than Dot4 over the paintwork.|
I just looked at the Gunson website and the picture shows a range of caps. Why not call them? I had a problem with my Eezibleed a few months back and they sent me a replacement part without any problem
|Dont have a lot of pressure in the tyre when coupling to an Easi-bleed.|
|Timmy: thanks for your help. I've bought that one on ebay.|
Graham: I did look at that but this cap seems much bigger than their largest. Even their dodgy looking "universal" is too small.
This thread was discussed between 03/05/2016 and 06/05/2016
This thread is from the archive. The Live MG Midget and Sprite Technical BBS is active now.