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blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17375

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

Before now I have stripped calipers where the only way to get the piston out has been to split the caliper then to drill and tap a hole in the back of the piston and use a bolt as a jackscrew to force the piston out. Despite the pistons being that badly stuck, the calipers have generally been salvageable.

On the whole now though I am of the view that the cost of a new quality caliper is so low that it isn't worth the effort of overhauling one, the hours involved in doing a decent job simply aren't worth it. If you want stainless pistons, fit them in a new caliper. If you don't, then just replace the calipers every five years or so.

17th Jun 2024 8:08pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20358

Does anyone happen to know the spanner size for the 2.4 Puma 90 brake bleed nipples?
Also any tips on a perfect tool for the job?

I have everything else, just need to get the right spanner.
There are a few options on the market for brake bleed spanner’s so anyone have any suggestions for a really good tool for the job?

There are flare nut types, a type with integral seal and nipple, / colour coded and ring spanner type, I think a spanner with flats is just best avoided as will slip and possibly round. Which would be a nightmare in itself so certainly don’t want to do that. $W33T $0U7H3RN $UG4R
🇬🇧🏴󠁧󠁢󠁥󠁮󠁧󠁿🏴󠁧󠁢󠁷󠁬󠁳󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🇮🇪🇺🇸⛽️🛢️⚙️🧰💪

27th Oct 2024 6:30pm

landy andy

Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5699

2006 Defender 110 Td5 USW Zermatt Silver

Aren’t the bleed nipples 11mm. And if tight use a socket, to snap it loose, then spanner.

27th Oct 2024 8:06pm

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 8026

2011 Defender 110 Puma 2.4 USW Stornoway Grey

11mm. Alot of the specific brake spanners don't fit as the sides are too thick on the pipe inlets, you can get away with them on the bleeds. I tend to use the ring end of std spanner. Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop

27th Oct 2024 8:40pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20358

Thank you.

27th Oct 2024 8:53pm

TexasRover

Member Since: 24 Nov 2022
Location: Paris
Posts: 1051

2002 Defender 110 Td5 DCPU Chawton White

Rebuild a few calipers over the years, never had an issue popping the pistons out with compressed air. Keep your fingers well clear and use a c clamp to place back and hold the pistons that popped. As said replacement calipers are affordable but a piston seal kit is more affordable still.

Recently rebuild my rear calipers on my 110 and took maybe 30 min a side. Should be good for another 10 years, went for normal chromed rather than stainless.

Click image to enlarge

28th Oct 2024 7:32am

landy andy

Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5699

If anybody wants a not too bad set of rear callipers let me know, I’ve got an old pair on my garage floor.

28th Oct 2024 8:27am

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