Hex socket/ Allen key for brake pads

idunno · 17th March 2012, 11:12

I am thinking of taking my brake pads out to give them and the discs a clean, does anyone know what size hex socket or allen key i will need as i will have to go and buy one, I will also have to remove the wear sensors to be able to do this, do they just pull off?

I did try searching other threads but could not find the information i needed.

Thanks in advance for any help given.

oldcarguy · 17th March 2012, 11:32

Cant remember the size, but they are tight, so get one to fit a ratchet or swivel bar. will get back with the size later if no one replies.

wuzerk · 17th March 2012, 11:36

The sensors just pull out but treat them carefully as they are brittle. The tool you need is a 'Hexagon bit socket 7mm...3/8" drive' available from Halfords etc. 7mm is not usually included in any socket set.

Jakg · 17th March 2012, 11:51

I just undid the Hex bolt with a T50?

Is there some other bolt I didn't spot?

carguy143 · 17th March 2012, 11:53

Yep, 7mm is the right size for the caliper key. Did mine on Monday.
Rik.

tdi90 · 17th March 2012, 12:34

When I cleaned the brake pistons, I didnt bother undoing allen bolts.
Just took the caliper off, and the pads come out with a bit of wiggling.

Ched · 17th March 2012, 14:33

They had 7 mm on vaux cavaliers,mines been sat on the shelf for 15 years,still in its original wrapping.......

idunno · 17th March 2012, 14:36

Thanks for your help, i went and bought a set of hex sockets from Halfords.
I have only done the front ones upto now, what i did notice was that the front discs are ventilated but the rear discs are not, does this make any difference when it comes to buying the pads or are all the cars the same?

17th March 2012, 11:12	#1
idunno Regular poster Rover 75 Saloon Join Date: Jun 2011 Location: Tamworth Posts: 78 Thanks: 19 Thanked 9 Times in 3 Posts	Hex socket/ Allen key for brake pads I am thinking of taking my brake pads out to give them and the discs a clean, does anyone know what size hex socket or allen key i will need as i will have to go and buy one, I will also have to remove the wear sensors to be able to do this, do they just pull off? I did try searching other threads but could not find the information i needed. Thanks in advance for any help given.

17th March 2012, 11:36	#3
wuzerk Passed Away Rover 75 CDT 03 auto Conn. SE Join Date: May 2009 Location: London Posts: 2,885 Thanks: 104 Thanked 254 Times in 204 Posts	Tools The sensors just pull out but treat them carefully as they are brittle. The tool you need is a 'Hexagon bit socket 7mm...3/8" drive' available from Halfords etc. 7mm is not usually included in any socket set.

17th March 2012, 11:53	#5
carguy143 This is my second home MG ZT 190+ Join Date: Jul 2011 Location: Skelmersdale, Lancs Posts: 3,027 Thanks: 163 Thanked 161 Times in 122 Posts	Yep, 7mm is the right size for the caliper key. Did mine on Monday. Rik. __________________ "You don't park a ZT, you simply allow it to rest until next time." It may not happen very often but if I say something helpful please hit the "thanks" button as it helps other users. Thank you. No. 16 of only 52 Nocturne Blue 75/ZT ever produced. ONLY TEN of these were ZT 190+ http://badges.fuelly.com/images/sig-uk/263467.png

17th March 2012, 12:34	#6
tdi90 Gets stuck in Nissan Navara Join Date: Oct 2011 Location: Wisbech Posts: 875 Thanks: 130 Thanked 98 Times in 76 Posts	When I cleaned the brake pistons, I didnt bother undoing allen bolts. Just took the caliper off, and the pads come out with a bit of wiggling. __________________ ZT gone, Range Rover gone. Nissan Navara pick up now

17th March 2012, 11:32	#2
oldcarguy Posted a thing or two Rover 75 Conn SE Tourer Join Date: Aug 2011 Location: Driffield Posts: 1,952 Thanks: 27 Thanked 151 Times in 125 Posts	Cant remember the size, but they are tight, so get one to fit a ratchet or swivel bar. will get back with the size later if no one replies.

17th March 2012, 11:51	#4
Jakg This is my second home N/A Join Date: Feb 2010 Location: Suffolk Posts: 6,867 Thanks: 0 Thanked 397 Times in 302 Posts	I just undid the Hex bolt with a T50? Is there some other bolt I didn't spot?

17th March 2012, 14:33	#7
Ched I really should get out more....... MG ZT V8, MGZT 135 derv ,MG TF 135 Join Date: Dec 2011 Location: Romsey Posts: 2,300 Thanks: 553 Thanked 573 Times in 385 Posts	They had 7 mm on vaux cavaliers,mines been sat on the shelf for 15 years,still in its original wrapping.......

17th March 2012, 14:36	#8
idunno Regular poster Rover 75 Saloon Join Date: Jun 2011 Location: Tamworth Posts: 78 Thanks: 19 Thanked 9 Times in 3 Posts	Thanks for your help, i went and bought a set of hex sockets from Halfords. I have only done the front ones upto now, what i did notice was that the front discs are ventilated but the rear discs are not, does this make any difference when it comes to buying the pads or are all the cars the same?