Thread: IIA brakes bleed and adjust

Hi Aulroers

This post is really just to say thanks to JDNSW and ColColeman for their posts on Series brakes from 2012. I have copied the two posts that helped me sort out my LWB 6 cyl IIA's brakes at last this weekend, relating to bleeding and adjustment.

Cheers
Paul

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http://www.aulro.com/afvb/showthread.php?p=1715523

If it pumps up to give a hard pedal, it is not a bleeding problem, but adjustment, either at the shoes or at the pedal.

If it is not a hard pedal when pumped up, it is probably a bleeding problem. In either case, start by clamping at each of the three hoses to the axles. If the pedal is not rock hard at this stage, you can then investigate master cylinder pedal adjustment and if necessary bleed at the union to the master cylinder.

Then release the clamp on the rear hose, adjust all shoes to lock wheels, and bleed - should get a solid pedal. Reclamp the rear hose, and repeat procedure at each front hose.

An alternative to locking the shoes is to remove the drums and clamp the shoes in using a large G-clamp. This has the advantage of minimising the volume in the wheel cylinder. In either case, the adjustment factor is removed from the equation.

When bleeding conventionally, use several rapid strokes of the pedal. The bleed nipple should be equipped with either a one way valve on a hose into a container, or have a helper to close the nipple. Alternatively, reverse bleeding or power bleeding can be used.

Clamps for blocking off brake hoses should be available from any auto parts place, and are quite cheap.

It would help id you stated whether it is a dual brake system or not, but in any case, the same approach applies. Remember that you can bleed at any junction if necessary, and remember that air bubbles will rise to the highest point, but can be carried along by a rapid flow of fluid.

Hope this helps,

John

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http://www.aulro.com/afvb/showthread.php?p=1715567

As JDNSW said, it is all in the adjustment. Only takes 1 shoe to be out and the pedal feels no good.

This is the foolproof order.

1: Back all adjusters right off.
2: Bleed from rear left, rear right, front left, front right, repeat,
3: adjust up each shoe until it grips, back off 1 click
4: done

Experience shows, that if you think you have bled it properly, you most likely have. Adjustment causes most of the pedal travel.

CC




Sent from my B1-730 using AULRO mobile app

+1 here, I used those posts recently as well