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seriesonenut

Member Since: 19 Nov 2014
Location: Essex
Posts: 1221

wheel cylinder troubles

Hi
Hope someone might be able to give me a steer with a wheel cylinder problem on my Series One (1957)

Click image to enlarge brakewvf by Richard Holmes, on Flickr

Today I set about changing the off side rear wheel cylinder ( no drama) then the front. The system is 'empty' of fluid (all lost through the rear cylinder). The new front Delphi cylinder seems to have a too powerful spring. The pistons are being held in by the rubbers, I fitted it but it is forcing the shoes out to max. Had a nightmare getting the drum off again.

Am I missing something obvious? The rear cylinder acted as expected, pistons pushed back and gently expanded.

Any suggestions, do I have a new but duff cylinder? 1984 One-Ten CSW
2010 XS USW (sold)
1957 Series One 88 diesel
1958 Series One 88 4x2

24th Oct 2021 4:48pm

Shroppy

Member Since: 25 Feb 2016
Location: Shropshire
Posts: 866

1986 Defender 130 V8 Petrol HCPU Aintree Green

I presume you have the 10", single leading shoe set up? If so, does the shoe-shoe spring not keep the pistons 'returned' in the cylinder? I've never had a wheel cylinder with an internal spring strong enough to over power the shoe spring.

Assuming you have all the springs in their correct places then I can only think that you either have a duff (overly powerful cylinder spring) wheel cylinder as you suggest or a particularly weak shoe spring.

A photo would help

1985 127 V8 Build Thread
Series 2 109"
Series 1 80"

24th Oct 2021 6:14pm

seriesonenut

Member Since: 19 Nov 2014
Location: Essex
Posts: 1221

Thanks. Straight out of the box the cylinder pistons seem fully out, you can push them in but they return immediately. The return springs to be fair look tired so I am going to get a new set. We are going to check with the local Indi supplier and I will give it a go again next weekend. All very odd

1984 One-Ten CSW
2010 XS USW (sold)
1957 Series One 88 diesel
1958 Series One 88 4x2

24th Oct 2021 6:30pm

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