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Advice please on strange design of front brake bolt - D4
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kevofcov
 


Member Since: 06 Nov 2007
Location: Other end of M69
Posts: 571

England 2016 Discovery 4 3.0 TDV6 Graphite LE Auto Java BlackDiscovery 4
Advice please on strange design of front brake bolt - D4

2016 Graphite





Is there anything that I need to know before I remove this bolt? It’s one of the two that hold the caliper bracket to the car. The head is an unusual design. Must be like that for a reason. My guess is that there is either a special 23mm socket needed or its shape is due to the torque needed when reassembling, or both.
Also has it changed design from D3 to D4? 21mm to 23mm as well maybe?
  
Post #226840921st Dec 2021 7:45 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10738

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

You just need a normal multi point socket
  
Post #226841121st Dec 2021 7:47 pm
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pjm-84
 


Member Since: 04 Oct 2016
Location: Hampshire
Posts: 2608

Ukraine 

Just check that they are not stretch bolts so need to be replaced.....
  
Post #226842221st Dec 2021 8:24 pm
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Bicycle repairman
 


Member Since: 18 Sep 2019
Location: Cumbria
Posts: 188

United Kingdom 2010 Discovery 4 3.0 SDV6 GS Auto Galway GreenDiscovery 4

They are not stretch bolts
 D4 GS let the retro fit begin
Heated steering wheel
Aftermarket TPMS
Double Din head unit satnav and TV
Reverse Camera
Cubby fridge
Door panel upgrade
Mood lighting
Digital Dash personalised
Back lit sun visors
4.5 Facelift front, rear and memory mirrors
Stainless bumper tread plate
6 pot Brembo conversion
HSE heated memory seats
Retro fit auto lights and wipers
LR 663 Defender alloys
275 45 20 GG AT3s
quarter of a D3 
 
Post #226842321st Dec 2021 8:26 pm
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SteveKK
 


Member Since: 11 Apr 2019
Location: North Herefordshire
Posts: 292

Ukraine 2010 Discovery 4 3.0 SDV6 HSE Auto Buckingham BlueDiscovery 4

Have a read through the Bodsy Brake Bible as this will tell you everything you need to know.

https://www.disco3.co.uk/wiki/Bodsys%27_Br...ment_guide

Regards,
Steve
  
Post #226846822nd Dec 2021 9:06 am
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