Servicing front brake, internal caliper disc brake — AUDI
Servicing front brake, internal caliper disc brake on Audi: factory workshop procedure. Full factory text, tools and checks.
Workshop procedure for AUDI — the factory write-up, straight from real workshop data.
📋 Procedure
ℹ️ Torque figures below come verbatim from workshop data — always cross-check against your vehicle's factory manual before final tightening.
Audi S4
Note:
Always install the complete repair kit.
After replacing brake pads, depress brake pedal firmly several times with vehicle stationary so that the brake pads are properly seated in their normal operating position.
To draw off brake fluid from the reservoir, use a bleeder bottle which is used only for brake fluid. Brake fluid is poisonous and must on no account be sucked out by mouth using a hose!
Brakes can be checked on all commercially available brake test stands, provided that the driving speed of the two driving rollers of the test stand does not exceed 5.5 km/h.
The tightening torque of the brake pipe is 15 Nm.
Wheel bearing housing
Hexagon bolt, 5 Nm
Cover plate
Hexagon bolt, 10 Nm
Brake disc
Always replace on both sides of the car
Internally ventilated brake disc: ø 310/312 mm
Brake disc thickness: 25 mm
Wear limit: 23 mm
Bolt, 4 Nm
Brake caliper housing
Servicing is not envisaged
Only replace as complete unit
Wire for brake pad wear indicator
Brake pads
always replace on both sides of the car
with wear indicator
Once wear limit is reached, warning light in dash panel insert comes on.
The outer brake pads are provided with an adhesive sheet on the backing plate of the pad. Remove the protective sheet before inserting pads.
Thickness 12 mm
check thickness
=> Audi 100 1991; Maintenance
Wear limit: 7 mm including backplate
Removing and installing => Page
46-17
Note:
Always clean the brake calipers (no grease) before inserting new brake pads. Make sure that all adhesive sheet residue on the contact surfaces of the outer brake pad is removed.
Pad retaining spring
Replace
Cable tie
Replace
Attach wire for brake pad wear indicator to bracket Item.-
14
- .
Connector
Take out of bracket at brake caliper on brake pad replacement
Hexagon bolt, 25 Nm
Bracket
Bolt to brake caliper housing
Insert connector for brake pad wear indicator
Brake hose
Do not disconnect brake hose when changing brake pads
Retention spring
Brake pipe, 15 Nm
Screw into brake caliper housing
Screw into brake hose, counterholding at hexagon on brake hose.
Ribbed bolt, 125 Nm
Clean ribbing if reusing
TorqFix answers live for your specific car — tell it the engine code and it serves the matching sequence, torque figures and wiring for that exact variant.
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Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.