Removing and installing brake shoes - all models and ceramic brakes — AUDI

Audi
Audi Q7
2007
Running gear
Brake system
Edition
03.2013
Removing and installing brake shoes - all models and ceramic brakes
Applies to all PR numbers.
Special tools and workshop equipment required
Brake spring tool
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Bit (16 mm)
T10198
Removing
Remove wheels.
Caution
On vehicles with ceramic brakes the wheel must not be allowed to drop onto the brake disc. This would cause irreparable damage to the disc. Screw two assembly pins into the wheel bolt holes when removing and fitting a wheel. Insert the long assembly pin into the top hole.
Remove brake pads
Chapter
.
Remove brake pads for 18 Plus brakes
Chapter
.
Remove brake pads (ceramic brakes)
Chapter
.
Pull speed sensor wire out of retainer on brake caliper.
Press back brake pistons (with brake pads installed) using
piston resetting appliance
T10145
.
Note
Do not disconnect brake hose and brake line when detaching brake caliper.
Slacken and remove bolts
20
securing brake caliper to hub carrier.
Carefully pull brake caliper (with brake pads fitted) over brake disc and remove.
Secure brake caliper housing with wire so that the brake hose does not take the weight of the brake caliper and is not damaged.
Remove screw plug
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for parking brake adjustment nut.
Note
Screw plug is not fitted on all models.
Resetting parking brake:
Turn adjustment nut
A
for extension spring
B
until there is sufficient clearance for the brake disc to turn freely.
Remove fitted bolt
Item
for brake drum.
Remove combined brake disc/brake drum.
Caution
Handle the ceramic brake disc with extreme care to avoid irreparable damage.
Unhook handbrake cable from expander.
Use a commercially available brake spring tool, e.g. HAZET - number 797 to disengage the extension spring.
Unhook extension spring at adjustment nut with brake spring tool
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.
Illustration shows rear right brake.
Note
Left extension spring at right brake, right extension spring at left brake.
Remove shoe steady pins along with compression springs.
Detach brake shoe assembly along with second extension spring and expander.
Installing
Note
Renew bolts for brake caliper.
Prior to installation assemble brake shoe assembly, expander and extension spring.
Remaining installation steps are carried out in reverse sequence.
Use a commercially available brake spring tool, e.g. HAZET - number 797 to engage extension spring.
Engage extension spring using brake spring tool
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.
Illustration shows rear right brake.
Hook handbrake cable into expander.
Caution
Handle the ceramic brake disc with extreme care to avoid irreparable damage.
Caution
On vehicles with ceramic brakes the wheel must not be allowed to drop onto the brake disc. This would cause irreparable damage to the disc. Screw two assembly pins into the wheel bolt holes when removing and fitting a wheel. Insert the long assembly pin into the top hole.
Note
Renew bolts
Carefully place brake caliper over brake disc.
Secure brake caliper to hub carrier with bolts
20
and tighten bolts (ceramic brake: 150 Nm + 90°).
After renewing the brake shoes, always adjust the parking brake (basic setting) before driving the vehicle
Chapter
.
Caution
Before driving vehicle for the first time, make sure function of brakes is OK.