brake leak

Moderator: Art1012

timhenson
Posts: 5
Joined: Wed Jun 13, 2018 5:22 pm

brake leak

Postby timhenson » Fri Mar 08, 2019 1:35 pm

Hi
I have a series 3 E type and was after some advice please.
The following is what I have got:-
1) It’s leaking brake fluid from the ‘cap’ of the reservoir by the servo.
2) I can find no other leaks anywhere.
3) The fluid level in the main reservoir is going down. A lot, say 25mm over 2 days.
4) The level in reservoir by servo is not going down.
5) So it appears what is happening is fluid is draining from the main reservoir and somehow coming out of the cap of the second reservoir by the servo.
I am thinking the servo unit is somehow broken and allowing this to happen. Any comments gratefully received before I swop servo.

Kind Regards
Tim
Tim Henson
[email protected]
0121 353 1511
Jaguar 1971 series 3 E type V12.
Rolls Royce 1933 20/25.

User avatar
JerryL770
Posts: 48
Joined: Sun Jan 22, 2017 6:36 pm

Re: brake leak

Postby JerryL770 » Sat Mar 09, 2019 6:41 pm

Yes, I would agree that the servo is faulty. This type of bypass is possible when one of the servo seals fails, It needs a rebuild or replacement. Probably wise to do a rebuild or replace the brake master cylinder at the same time.
JerryL
1970 E-Type S2 FHC. Dark Blue with Red interior. MX5 seats
Ariel Leader returned to the road since 1974 - now passed to someone more enthusiastic :)
Various R/C flying models

Online
User avatar
RichardSEL
Posts: 776
Joined: Thu May 26, 2016 6:29 pm

Re: brake leak

Postby RichardSEL » Sun Mar 10, 2019 9:16 am

Yes, I would agree that the servo is faulty. This type of bypass is possible when one of the servo seals fails, It needs a rebuild or replacement. Probably wise to do a rebuild or replace the brake master cylinder at the same time.
FWIW I've had good experience x2 from Contract Auto Engineering in Stourbridge (no connection)
They've done a set of calipers, master cylinder, and vacuum servo for my Mk IXs, and a master cylinder
for my XJ6 series 1. I did use BiggRed for the calipers on that car only because, in that instance, they were price competitive and faster delivery

I don't know anything about Past Parts
Gone: '59 Mark I, '56 Mark VIIM, '59 Mark IX, '01 XJ8 Sovereign 4L LWB, '01 XJ8 Sport 3.2L, '01 XJ8 Exec 3.2L
Current: '03 Strange Rover L322
In trim shop for total refurb: '73 Owen Sedanca 4.2L
Stalled in storage '61 Mark IX with 4.2L

User avatar
JerryL770
Posts: 48
Joined: Sun Jan 22, 2017 6:36 pm

Re: brake leak

Postby JerryL770 » Sun Mar 10, 2019 11:56 am

SNG Barratt will have any parts you need including repair kits.
JerryL
1970 E-Type S2 FHC. Dark Blue with Red interior. MX5 seats
Ariel Leader returned to the road since 1974 - now passed to someone more enthusiastic :)
Various R/C flying models

timhenson
Posts: 5
Joined: Wed Jun 13, 2018 5:22 pm

Re: brake leak

Postby timhenson » Sun Mar 10, 2019 6:40 pm

Thanks both for the info, very grateful. And yes while doing it might as well do master cylinder as well. Thinking of stripping down first then decide on rebuild or new.

Thanks again

Kind regards. Tim.
Tim Henson
[email protected]
0121 353 1511
Jaguar 1971 series 3 E type V12.
Rolls Royce 1933 20/25.


Who is online

Users browsing this forum: No registered users and 1 guest