Brakes - Calipers


Topics covered:

Conversion to accommodate vented discs

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From: Jamie Austin[SMTP:jamie.austin@austingroup.co.uk]
Sent: Saturday, August 26, 2000 5:59 AM
Subject: [D90] very heavy duty (military) brakes

Rob, contact B&H services in Basingstoke, they sell the conversion for the front callipers to make them fit the vented discs.it's a couple of little spacers that you bolt in between the two halves of the calliper. i think that the whole kit, discs and all, is about #150, but they sell the bits separately.

Jamie
'96 Tdi D110
'92 V8i D90
'85 Tdi D90

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From: Jamie[SMTP:jamie.austin@austingroup.co.uk]
Sent: Thursday, October 26, 2000 9:02 AM
Subject: [D90] Towing

For the vented calipers, with the standard vented discs, use: FTC 902

the part numbers for the standard (110 and 90) defender vented discs are:
STC 1266 (RH)
STC 1267 (LH)

The heavy duty military vented discs are :
FTC 1914 (RH)
FTC 1915 (LH)

I don't have the part numbers for the calipers, but i measured mine, and the little spacer that goes in between the two halves of the standard vented caliper is exactly twice as wide on the HD version. so if you can get hold of a few more of the spacers, or get some machined up then you're in business!

the HD discs, over here, are VERY expensive....#360 UKP $540!!! EACH! but John Craddocks, in the UK ( www.johncraddockltd.co.uk ) had a special on, selling them, brand new, still in the LR box for #30 UKP ($45) each! a bit of a saving! don't know if the offer is still on though.

Jamie

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Rebuilding Calipers

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From: Brad Harris[SMTP:brad.harris@westernsouthernlife.com]
Sent: Wednesday, October 25, 2000 11:22 AM
Subject: RRO: RE: Caliper rebuild

I thought that the wheel cylinders on my 109 were easier to rebuild than the brake calipers on my RR. The brake calipers were easier to bleed afterwards though. I didn't need to hone out the brake caliper on the RR but I did need to hone the wheel cylinder on the 109. The pistons are a pain to get out if you don't have compressed air handy. Take a good look at your pistons before you take the caliper apart. Mine needed to be replaced. The chances are you'll need to replace them so it would be nice to have them on hand to minimize the down time. I couldn't find a source for the seal between the two halves of the caliper so I didn't take the halves apart. This would make it difficult to hone unless you have a right angle drill or flexible extension. Again, I didn't need to hone the bore. Use a c-clamp and a large washer to press the metal ring in place (the ring that goes in the caliper after the seal). I tried pushing in the first ring by hand and it bent. The large washer and clamp worked great.

Have a good day,
Brad H.

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