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[gbh]

Yes that's the parts I ordered say they should be 5-10 days so we'll see as for the Delphi part it is more meaty and was a very tight fit on one side may try again when the new Bosch discs arrive

[dave the builder]

Maybe the handbrake cable has been adjusted too much in the past ?
handbrake adjustment is done at the hub but many garages/DIYers just tighten the cable 
with the adjusters wound in,shoes centralised,
 put the disk over,remove and adjust till you can no longer get the disk on,
adjust back slightly ,refit disk ,work the handbrake a few times to centralise again,
adjust through the hole till it binds,wind back till it runs free
then adjust the handbrake cable to a sensible number of clicks

i think TIS says 7 clicks ,I set mine at 3 

[Enceladus]

Yes that's the parts I ordered say they should be 5-10 days so we'll see as for the Delphi part it is more meaty and was a very tight fit on one side may try again when the new Bosch discs arrive

Member johnnydog offered you a set of used but servicable. pins and springs. You'd likely be quicker taking him up on the offer.
New discs should be even tighter on the shoes. Are you sure you've backed off the adjuster between the  shoes, at the top? It's easy to turn in the wrong direction which spreads the shoes apart.

Anyway if your old shoes are undamaged with a least some remaining thickness then just clean them up and put them back on.

gbh - to save you pulling your hair out , I have a set of the correct used vented pins and springs that I can spare if you want to pm me.
They are rusted but with care will clean up sufficiently to be quite serviceable. The springs are the parts that normally disintegrate but the pins will usually clean up with a rotary wire brush.
But they are here if you need them.

[Doctor Gollum]

It's actually quite easy to fit the shoes on the piss.

If the adjuster is wound home and the cable moves freely, then you need to reposition the shoes. This simply involves pushing them to where they belong, (helps if you put a wipe of copper slip where they contact the backing plates), then the disc should pop on and spin freely.

With practice you can set the adjustment almost spot on before, leaving just a final tweak once the disc is bolted to the hub. Takes a couple of go's pulling and refitting the disc, but it's one of those jobs... Fiddly yet satisfying.

Also bear in mind that the disc retaining screw needs to be fitted for the disc to spin freely

[gbh]

Learning all the time from these useful tips

[johnnydog]

With practice you can set the adjustment almost spot on before, leaving just a final tweak once the disc is bolted to the hub. Takes a couple of go's pulling and refitting the disc, but it's one of those jobs... Fiddly yet satisfying.

If refitting the old disc, a few minutes spent removing the lip that inevitably has developed on the outer edge of the handbrake shoes contact area saves a lot of time in the adjusting, and the 'on / off' of the disc before the final fitment /adjustment.

[Doctor Gollum]

I don't personally bother removing the rear disc unless there's a specific handbrake problem or I am replacing the disc

Brakes are May's big job on the Barge. Handbrake service plus new discs, pads and fittings. Plus a suspension survey whilst it's up in the air with the wheels off...

[gbh]

Well I can report that the spring retaining clips have arrived and very quickly too via Vauxhall dealers so that's one less problem and not too bad at £7 each

[gbh]

Reason I decided to strip it all down was that when I was having the wheels aligned poorly they told me they could see a foreign object by the hub which turned out to be a shim.Also the back wheels were seizing if left for a while and a good opportunity to check it all out.Having failed the MOT on front brake discs and being in December and going into hospital got the garage to sort it,now seemed the time!!!

[Doctor Gollum]

Well I can report that the spring retaining clips have arrived and very quickly too via Vauxhall dealers so that's one less problem and not too bad at £7 each

Before you fit it, check against this...

http://www.omegaowners.com/forum/index.php?topic=127928.msg1942220#new

[Enceladus]

Well I can report that the spring retaining clips have arrived and very quickly too via Vauxhall dealers so that's one less problem and not too bad at £7 each

Before you fit it, check against this...

http://www.omegaowners.com/forum/index.php?topic=127928.msg1942220#new

Might be wrong but in that thread there used to be a useful photo of the vented parts laid out on a sheet of graph paper. The photo seems to have gone AWOL.

Just in case.
GM #9195055 are the pad retaining pins for vented discs and are 86mm long. Pins for solid discs are 73.5mm.
GM #9195056 are the anti-rattle cross springs for vented discs and are 56mm across the horizontal span. Solid disc cross springs are 48mm across the horizontal span. And that's because although the pads are the same the vented disc is 20mm thick vs 12mm for the solid.

Also the vented disc calipers have Ø42mm pistons vs solid at Ø40mm. So they're not identical.

[Doctor Gollum]

Still shows here  pic is forum hosted aiui

Certainly I doubt I still have the original...

[Enceladus]

That's funny. It was definitely missing earlier. But now it's appeared back.

[gbh]

[gbh]