V8V Handbrake Calliper

[bullet7]

Anyone know how to force the piston back into the handbrake calliper, only the workshop manual is less than helpful?

[craig elam]

turn the piston clockwise, if you dont have a caliper wind in tool just use something that fits the slots in the face of the piston, i assume your replacing handbrake pads, use the adjustment in the piston so the pads are just clear of the discs, if your lucky lever travel will be ok, if not use the cable adjusters to set it up,

[bullet7]

Many thanks Craig. Yes, new discs & pads at the rear. Getting the pins out of the handbrake calliper on the driver's side was a complete PITA. On the normal calliper they popped out just fine.

Interesting that the handbrake pads, which are the originals, are stamped TRW but also have Brembo printed on them too. I thought they were separate companies.

[craig elam]

i think there always difficult because they never get removed unlike the service brake pads, im a great copperslip fan the old boy that taught me said "it makes the next mans job a lot easier", im still hoping to be the next man one day!!
when i did my handbrake pads they crossed over to "S" type jag think i paid £11 for a set!!, enjoy your weekend project

[rancidswan]

Hi bullet7

Out of interest where did you get your rear discs/pads what brands did you go for and what did you pay for them?

rancid.

[bullet7]

First of all, I lied about the pads, they have Textar stamped on them, not TRW. The new ones I'm fitting are TRW. These came from eBay at £21.87 delivered, link https://www.ebay.co.uk/itm/332458058059

Discs came from Autodoc in Germany, genuine Brembo at £151.39 delivered.

Pads are Porterfield R4S from Whifbitz in Newport at £171.96 - I collected these as I was on my way past, almost.

As the main calliper has been off, I bought new stretch bolts from AM at £6.48

The pins for the handbrake pads were a shocker at £71.14, again from AM - I couldn't find another supplier for these, but I'm sure there is somewhere

[craig elam]

71 quid!!! ,I dont mind one bit paying the price for AM parts but when its reboxed jag /Ford /Volvo bits..., i think its fair to guess that as the h/brake pads cross reference to "S" type jag thats it probably the same or very similar caliper, pins from euro car parts tenner i bet,

[craig elam]

just thought , the s type doesnt have vented rear discs so the pins are probably shorter so it might be a bespoke part, my apologies to AM

[bullet7]

Pins are a Brembo part, that's what it says in the packet. I guess it stands to reason as the callipers are Brembo too, but I'm sure they can be found cheaper elsewhere. Unfortunately, I didn't have the time to shop around and wait for delivery.

So, one side done, now for the other.......

[craig elam]

hope its going well!!, was there a brembo part number on the packaging

[DB9VolanteDriver]

If one intends to remove the rear disc, it is simpler to split the handbrake caliper in situ than to attempt to remove it. Makes pad replacement simpler.

[bullet7]

Not sure if there is a Brembo part number or not. On one side of the sealed bag, there is the usual AM part label with their part number. On the other side of the bag there is a much smaller sticker (a bit like a price sticker) with the numbers 122 320406. Inside the bag there is also a Brembo instruction leaflet which has a number on the front (98.8248.60) - I guess this could be the part number, but these look like generic instructions.

I didn't get to finish the second wheel. I got as far as replacing the disc and putting the hydraulic caliper back but the handbrake one stumped me. The pins on the passenger side were even more corroded than the driver's side, in fact so was the disc. I ended up removing the two bolts holding the caliper together but even then could not get the pins out. I cut through both pins enabling me to part the caliper and remove the pads. The ends of the pins that have the spring clips in them came out surprisingly easily. It was the other ends which are interference fit into the caliper which were stuck. I managed to remove one of them by twisting with mole grips. The other one refused to budge. As time was running out yesterday, I left the caliper with penetrating oil sitting in the hole with the remaining stuck pin. Hopefully it will have soaked in by next weekend.