The Triumph Dolomite Club - Discussion Forum

Hello,

Is there a kit to recondition the tandem brake sensor / union ? The H shaped item by the servo.

Thanks, Richard

See Richard Old's contribution in the last magazine...

I currently have one apart, but am struggling to get the shuttle out!

RichardHyde wrote: ↑Mon Sep 23, 2019 11:18 am Hello,

Is there a kit to recondition the tandem brake sensor / union ? The H shaped item by the servo.

Thanks, Richard

If its what i think you mean then said,theres a seal kit try LDparts or Paddocks its the same parts as used on Stags

Dave

xvivalve wrote: ↑Mon Sep 23, 2019 11:21 am See Richard Old's contribution in the last magazine...

I currently have one apart, but am struggling to get the shuttle out!

I made up a tool for centerizing that shuttle,makes it easier when bleeding the brakes

Dave

Is it leaking or seized? If nothing wrong with it, leave well alone! If it's duff, I tend to remove them from the system altogether (and have 2 or 3 semi functional ones as a result) It doesn't do anything much or tell you anything you don't already know, since the light only (theoretically) comes on with pressure loss in a circuit of the brakes which you will already know cos the pedal has gone to the floor (or nearly)

So I do away with the wretched thing, substituting a tee piece in the front brake line and an inline joiner in the rear line. Then use the wire to power a float equipped master cylinder lid, culled from a scrap Saab 9-3 (get the plug and a few inches of wire too) which WILL give you advance warning of impending circuit failure! Brake bleeding is a lot easier without the stupid thing there as well! I'm doing just such a delete for a customer ATM, i'll post some pics when it's done!

Steve

A long long time ago a Malcom England wrote an article for Dolly mixture on what was needed to overhaul this unit. He identified the need for a copper washer which at the time could be obtained from Halford as part HFX227 Sump Plug washer and the o rings which could be obtained from Hanshel seals & mouldings. At the time I purchased some but I had to have a minimum quantity of 30. The packaging is marked with a part number BS008 EPDM. The supplier is still around but I do not know if more detail is required to actually purchase them.

The more I read about this unit the more I think the best thing is not to touch it if it is not leaking and not to worry about centering the shuttle valve just unplug the wire or pack the switch out to stop it bring the warning light on.

When it comes to bleeding the system just bleed the two front calipers and then do the rear and forget about the shuttle valve as it does not shut off either of the brake lines it just separates the two lines. The important thing is to monitor the brake fluid level so that you get a warning of any minor leaks.

A requests for Alun.

I hope that you will be able to free up the shuttle and that this will then enable you to provide your assessment as to how this item effects the cars brake hydraulics.

I obviously hope you will come to the same conclusion as I have previously stated.

Richard the old one wrote: ↑Mon Sep 23, 2019 6:59 pm
The more I read about this unit the more I think the best thing is not to touch it if it is not leaking and not to worry about centering the shuttle valve just unplug the wire or pack the switch out to stop it bring the warning light on.

When it comes to bleeding the system just bleed the two front calipers and then do the rear and forget about the shuttle valve as it does not shut off either of the brake lines it just separates the two lines. The important thing is to monitor the brake fluid level so that you get a warning of any minor leaks.

A couple of years ago my callipers were reconditioned and at the same time this valve was stripped and checked. It was all ok so put back. Then getting the light out when bleeding was impossible, just couldn't get it to centre. Two man job over and over trying to set it. Light off shout to shut nipple, light back on. Gave up. I put a spacer washer to bring the micro switch out of the shuttle and left it. I have replaced the hoses this year with braided ones and again no problems bleeding and the balance is not affected at all.