How to front and rear brake pads removal.


Just thought I'd put this up as we don't have one yet.

Jack up and remove wheel from the car to gain access to brake.



Next take out the guide bolt from the bottom 10mm



you may need to slacken the top guide bolt no need to fully remove it



then pull the housing out and up





Tie the housing to something (although I didn't)

To remove the brake pad just pull it out towards you the back one pulls out away from you



remove the brake pad retaining springs they just pull down or up (give them a clean).



Refitting is the reversal of removal the guide bolts need to be torqued up to 28 N.M (21 lb ft).
If you need to push the piston back in Vauxhall use tool CH-6007-B but I find a couple of bits of wood and a G clamp is just as good.


Now for the rear

again jack up and remove wheel



fully remove the calliper vibration dampener 13mm spanner





again pull the housing out and up





there is not a lot of room here hence no pics but the pads pull out the same as the front as do the retaining springs.

Again clean the retaining springs
refitting is the reversal of removal the guide bolt and calliper vibration dampener need to be torqued up to 28 N.M (21 lb ft). Not having a torque spanner I just did the calliper vibration dampener up nice and tight.
If you need to push the piston back in Vauxhall use tool CH-6007-B with CH-6007-50 adapter these are wind back at the rear so you will need to wind them.

Thanks to JohnL for supplying the following pics on rewinding the pistons on the rear.





Not sure if you can see from the picture but I bolted the top of the calliper back up which held everything in place and allowed me to concentrate on turning the rewind tool. and not worry out holding the calliper and looking out for the brake pipe.

Total job took no more than 30 minutes complete.

Number 7 was used on the rewind tool.

Here is list for Pads and Discs and GM Part numbers and Disc and PCD sizes.

Astra J GTC, DISCS AND PADS, PCD 5x115 ALL ENGINE SIZES  

FRONT DISC, 321MM 13502826
FRONT PADS, 13137751
REAR DISCS, 292MM 13502138
REAR PADS, 13300867

ASTRA J 5 DOOR, DISCS AND PADS, PCD 5x105 engine size 1.4 VVT 1.6 VVT 1.3 CDTI

FRONT DISC, 276MM 13502044
FRONT PADS, 13301207
REAR DISC, 268MM 13502134
PADS SET, REAR 13300867

ASTRA J 5 DOOR DISCS AND PADS 5x115 1.6 TURBO 1.7 CDTI 2.0 CDTI

FRONT DISCS, 300mm 13502051
FRONT PADS, 13301234
REAR DISCS, 292mm 13502137
REAR PADS, 13319294

Astra J VXR, DISCS AND PADS, PCD 5+115

FRONT DISCS 355mm 13370436
FRONT PADS 13411116
REAR DISCS 314mm 13371163 or 13429575
REAR PADS 13417473


Electronic Parking Brake Control Module

Note: Verify the rear brakes are clear of any obstacles before starting the calibration procedure. During the procedure the rear brakes will cycle several times, stay clear of all moving parts until the process is complete.

Perform the Parking Brake Calibration procedure in Module Setup.

Calibration without Scan Tool

1.Ignition ON, apply and hold the brake pedal.
2.Push and hold the electric parking brake switch down for 5-6 seconds.
3.Release the electric parking brake switch.
4.Momentarily push the electric parking brake switch down.
5.Remove the EPB MODULE fuse and reinstall. (Engine fuse-board fuse 29 30A K83 Parking Brake Control Module (J71))
6.Apply the electric parking brake.
7.Release the electric parking brake

Here is a Thread on How to Grease the Slider Pins and Shims and Pads to stop Brake Squeal

http://www.vxoc.org.uk/forum/Thread-How-to-Stop-brake-Squeal-Astra-J

(19:th-Jan-2017, 19:56:20)Big Dave2 Wrote: My socket set jumps from 19mm to 22mm. 19mm isn't big enough, and 22mm looks too loose.

It looks like 21mm to me.

(19:th-Jan-2017, 19:42:33)Astra VXD Wrote: Issue I found when ordering from anywhere other than Vauxhall is.. you have the option of 2 rear disk sizes for my car,one being 268mm and the other being 292mm (which is what I wanted) but then when I want a rear pad there was only one choice for this. So this means the 268mm disk and the 292 mm disk uses the same size pad which in my eyes is completely pointless of a bigger disk.im upgrading to USR slotted with green stuff from ebc.anyone else noticed this.if I go to gsf or anywhere they say there is only one rear pad size for my car Astra 2.0cdti.

(20:th-Jan-2017, 12:00:32)Big Dave2 Wrote:

(19:th-Jan-2017, 19:56:20)Big Dave2 Wrote: My socket set jumps from 19mm to 22mm. 19mm isn't big enough, and 22mm looks too loose.

It looks like 21mm to me.

I guess I'll find out very soon. Managed to borrow a socket set from work that has a 20 and 21mm socket. Just waiting for the delivery of the discs and pads.

(20:th-Jan-2017, 12:43:31)Rusty2009 Wrote: I never paid attention to the size When I did mine sorry.

(6:th-Feb-2017, 14:20:55)Big Dave2 Wrote: Can anyone confirm as I'm sure it'll be handy not only for me, but others in the future too.

(11:th-Feb-2017, 08:24:29)Rusty2009 Wrote: IIRC they wind back clockwise and anti-clock wise.

(7:th-Dec-2018, 22:00:37)Collster Wrote: Cheers rusty,just noticed message, passed mot 2 days after they were done so result.. they said because all 4 disc's and pads done might take a while for them to adjust,but definitely think a bleed might be needed...also said that the handbrake  is self adjustable , not sure if true,but will try the parking on flat bit hopefully Will work, thanks

(21:st-Feb-2014, 14:02:19)Rusty2009 Wrote:

How to front and rear brake pads removal.


Just thought I'd put this up as we don't have one yet.

Jack up and remove wheel from the car to gain access to brake.



Next take out the guide bolt from the bottom 10mm



you may need to slacken the top guide bolt no need to fully remove it



then pull the housing out and up





Tie the housing to something (although I didn't)

To remove the brake pad just pull it out towards you the back one pulls out away from you



remove the brake pad retaining springs they just pull down or up (give them a clean).



Refitting is the reversal of removal the guide bolts need to be torqued up to 28 N.M (21 lb ft).
If you need to push the piston back in Vauxhall use tool CH-6007-B but I find a couple of bits of wood and a G clamp is just as good.


Now for the rear

again jack up and remove wheel



fully remove the calliper vibration dampener 13mm spanner





again pull the housing out and up





there is not a lot of room here hence no pics but the pads pull out the same as the front as do the retaining springs.

Again clean the retaining springs
refitting is the reversal of removal the guide bolt and calliper vibration dampener need to be torqued up to 28 N.M (21 lb ft). Not having a torque spanner I just did the calliper vibration dampener up nice and tight.
If you need to push the piston back in Vauxhall use tool CH-6007-B with CH-6007-50 adapter these are wind back at the rear so you will need to wind them.

Thanks to JohnL for supplying the following pics on rewinding the pistons on the rear.





Not sure if you can see from the picture but I bolted the top of the calliper back up which held everything in place and allowed me to concentrate on turning the rewind tool. and not worry out holding the calliper and looking out for the brake pipe.

Total job took no more than 30 minutes complete.

Number 7 was used on the rewind tool.

Here is list for Pads and Discs and GM Part numbers and Disc and PCD sizes.

Astra J GTC, DISCS AND PADS, PCD 5x115 ALL ENGINE SIZES  

FRONT DISC, 321MM 13502826
FRONT PADS, 13137751
REAR DISCS, 292MM 13502138
REAR PADS, 13300867

ASTRA J 5 DOOR, DISCS AND PADS, PCD 5x105 engine size 1.4 VVT 1.6 VVT 1.3 CDTI

FRONT DISC, 276MM 13502044
FRONT PADS, 13301207
REAR DISC, 268MM 13502134
PADS SET, REAR 13300867

ASTRA J 5 DOOR DISCS AND PADS 5x115 1.6 TURBO 1.7 CDTI 2.0 CDTI

FRONT DISCS, 300mm 13502051
FRONT PADS, 13301234
REAR DISCS, 292mm 13502137
REAR PADS, 13319294

Astra J VXR, DISCS AND PADS, PCD 5+115

FRONT DISCS 355mm 13370436
FRONT PADS 13411116
REAR DISCS 314mm 13371163 or 13429575
REAR PADS 13417473


Electronic Parking Brake Control Module

Note: Verify the rear brakes are clear of any obstacles before starting the calibration procedure. During the procedure the rear brakes will cycle several times, stay clear of all moving parts until the process is complete.

Perform the Parking Brake Calibration procedure in Module Setup.

Calibration without Scan Tool

1.Ignition ON, apply and hold the brake pedal.
2.Push and hold the electric parking brake switch down for 5-6 seconds.
3.Release the electric parking brake switch.
4.Momentarily push the electric parking brake switch down.
5.Remove the EPB MODULE fuse and reinstall. (Engine fuse-board fuse 29 30A K83 Parking Brake Control Module (J71))
6.Apply the electric parking brake.
7.Release the electric parking brake

Here is a Thread on How to Grease the Slider Pins and Shims and Pads to stop Brake Squeal

http://www.vxoc.org.uk/forum/Thread-How-to-Stop-brake-Squeal-Astra-J

(10:th-Aug-2019, 19:08:57)everson38 Wrote: Hello Rusty. Great Post.  I am fairly new to the forum and I am trying to find out what discs sizes i need. I have an Astra J GTC 1.7 62 plate (3 door) diesel.  Can you advise on which discs size i would need thank you