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neon1991



Member Since: 26 Mar 2018
Location: Colchester
Posts: 74
United Kingdom 2014 Defender 110 Puma 2.4 USW Firenze Red
wabco ABS
morning all,

I just thought I'd post in case anyone else found themselves to be in the same boat as me. last week my ABS pump bit the dust. wasn't getting any flow from the front lines doing a power bleed and my diagnostics backed up my thought that the pump had died. I sent it off for a rebuild but it was heavily corroded internally.

I have a reasonably expensive rebuilt unit on it's way today.
Being impatient, I looked for other options wondering why the Disco II ABS module seemed so much cheaper and more readily available than the defender one. they look the same other than the labeling of the brake lines. Curious, I fitted a disco II abs unit that's was up for sale down the road form me for £30.

I wasn't expecting much but it works perfectly!!! ignore the brake labeling and just plumb it up as you would a defender unit. £30 unit is on there now and the £500 unit is about to drop onto my door step! typical lol
Post #842074 6th Jul 2020 11:52am
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Swine&Small



Member Since: 20 Mar 2017
Location: Norfolk
Posts: 1223
United Kingdom 
Ouch ! Big Cry 1983 Series 3 Pick up in Marine Blue
1967 Morris Traveller
1966 Morris Convertible
2012 VW T5 Camper
Quod Abundat Non Obstat.
Post #842075 6th Jul 2020 11:58am
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GREENI



Member Since: 22 Aug 2010
Location: staffs
Posts: 10367
United Kingdom 
top tip !!
Post #842111 6th Jul 2020 3:16pm
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Craig-C



Member Since: 25 Aug 2017
Location: Staffs
Posts: 40
United Kingdom 2007 Defender 90 Puma 2.4 HT Rimini Red
Just done the same job myself on my TD5. Worked a treat. My motor was also full of rust.

It is difficult to access but can be done on a TD5 by removing the inlet grill and ducting, wheel arch and loosening the brake pedal box.

My Puma is a none ABS spec. Thumbs Up

Maybe the cost is just due to availability. FFRR TDV8 sold
PUMA 90 :0[==]0:
90 TD5 CSW XS
MX5 (NC)
BMW 320
BMW 1200 GS Adventure
SUZUKI HAYABUSA
Post #842151 6th Jul 2020 6:46pm
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Mike c



Member Since: 11 Aug 2017
Location: Maldon, Essex
Posts: 905
England 2004 Defender 90 Td5 CSW Belize Green
As above, purely down to availability, all discovery 2s came with abs/traction control and were sold in their thousands, plus lots being scrapped due to chassis rot which is a shame really.

Useful to know though as my td5 has abs Thumbs Up
Post #842152 6th Jul 2020 6:58pm
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v8bob



Member Since: 14 Mar 2018
Location: Midlands
Posts: 305
United Kingdom 1998 Defender 90 300 Tdi HT Nato Green
Re: wabco ABS
neon1991 wrote:
morning all,

ignore the brake labeling and just plumb it up as you would a defender unit.


Do you know if this works? Have you tested it with individual wheels with lost traction?
It concerns me that not matching could cause the electronics of the ABS to release the wrong brake.
Post #842153 6th Jul 2020 7:04pm
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neon1991



Member Since: 26 Mar 2018
Location: Colchester
Posts: 74
United Kingdom 2014 Defender 110 Puma 2.4 USW Firenze Red
yes, abs and TC work on the correct wheels. managed to get it cross axled on a local lane near me for a bit of a play.
Wabco only have one part number for these pumps. Landrover just plumbed them differently for the disco. New pump arrived yesterday so have a bit of a dilemma. fit it or keep it as a good spare...
Post #842245 7th Jul 2020 7:49am
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 16933
United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
I imagine that the ECU simply tells the modulator which brake line to pulse or release, and the mapping of wheel to output is in the ECU. If the ECU says modulate line 1, the modulator with do just that.

It's a handy tip to know that these are interchangeable*. Thumbs Up




* But I am still glad I don't have ABS/TC on my Defender, it would just be one more thing to go wrong.
Post #842261 7th Jul 2020 8:47am
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neon1991



Member Since: 26 Mar 2018
Location: Colchester
Posts: 74
United Kingdom 2014 Defender 110 Puma 2.4 USW Firenze Red
youre not wrong Lonewolf! It's not a fun job getting that lump out of the tiny little hole they found to put it in
Post #842281 7th Jul 2020 10:16am
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