MK1 Master cylinder seal kit

Everything that keeps your car in contact with the road, and from contacting other road users.
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Sloppy 2000
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MK1 Master cylinder seal kit

#1 Post by Sloppy 2000 » Sat Jul 28, 2018 6:31 pm

My 1968 2000 has a single line brake master cylinder. I have put new seals in it today and there is no seal for the check valve in the kit. I have checked and can't find a kit with one in any where. Even on CW site the kit comes with no check valve seal.
It does not look it's best and I wondered why there aren't any and what to do. Can anyone advise?

Jeff
Triumph 2000 estate mk1 1968

johnnydog
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Re: MK1 Master cylinder seal kit

#2 Post by johnnydog » Mon Jul 30, 2018 11:48 pm

Hi Jeff,
I'm not exactly sure which seal you are referring to. I am aware of the 'trap valve' or sometimes referred to as the 'check valve' (part no 502747), but the parts book does not show a seal specifically for this part of the kit.
I have got boxes of seal kits for all the hydraulic parts of our Triumphs, so if there is indeed a specific seal, I may well have one.
Any chance you could take a photo of the old one, and email it to me, even or Whatsapp it to me.
John.
Register Member no. 1596

1967 Mk1 2000 in Gunmetal Grey
1969 Mk1 2000 in Royal Blue
1970 Mk2 2000 in Valencia Blue
1972 Mk2 2.5 PI in Triumph White
1973 Mk2 2.5 PI in Sienna Brown
1976 Mk2 2500S in Carmine Red

Sloppy 2000
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Re: MK1 Master cylinder seal kit

#3 Post by Sloppy 2000 » Wed Aug 01, 2018 4:57 pm

Hi

The white part in the kit that came is a later check valve apparently, originals are no longer available. So I infact have the right kit. Only thing is which way round. Do the little feet on it go towards spring or other way around?

Jeff
Triumph 2000 estate mk1 1968

Clifford Pope
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Re: MK1 Master cylinder seal kit

#4 Post by Clifford Pope » Wed Aug 01, 2018 5:32 pm

Haynes doesn't mention item 2 in the notes, but shows it apparently with the feet pointing towards the spring. Autobooks uses the same diagram, but poorer quality, and only describes the check valve insert as going at the front, larger end, of the spring.

I remember encountering this some years ago, and either must have concluded that it was obvious (does it seem to fit the wider end of the spring better one way round?) or phoned up Chris Witor. Sorry, can't remember.

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Re: MK1 Master cylinder seal kit

#5 Post by Sloppy 2000 » Wed Aug 01, 2018 7:05 pm

That's just what I needed. I'll b road legal soon. Thanks all
Triumph 2000 estate mk1 1968

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