Audi A8 2003 - Brake System: Checking Condition of Brake Hoses, and Checking that Caps Are Fitted on Bleeder Screws; Brake Pads: Checking Thickness

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Procedure:
– Evaluate brake fluid level according to markings -arrows- on
brake fluid reservoir.
– Perform the following measures according to the results of the
check:
Fluid level: Evaluation/measure:
Above MAX marking Extract brake fluid.
Below specified level Carry out brake system leak test ⇒ Rep. gr. 47 ; Hydraulic system; Leak test .
Note
When the vehicle is in use, the fluid level drops due to wear and
automatic adjustment of the brake pads.
3.13 Brake system: checking condition of
brake hoses, and checking that caps are
fitted on bleeder screws
Requirements:
• Brake hoses must not touch any components when steering
is on full lock.
• Brake hoses must not be twisted.
Procedure:
– Check that all brake hoses are secured properly; when doing
so, ensure that the conditions listed are met:
– Check all brake hoses for abrasion, porosity, blistering and
cracking.
– Check that brake connections are seated correctly, and check
for corrosion and leaks.
– If faults are found on brake hoses: Repair/renew relevant com‐
ponent.
– Check that caps are fitted and secured on bleeder screws of
all brake calipers.
– Renew any missing caps.
3.14 Brake pads: checking thickness
Special tools and workshop equipment required
Audi A8 2003 ➤
Maintenance - Edition 06.2014
3. Maintenance 31