Skoda Octavia II 2004 Workshop Manual page 176

Octavia II 2004 ➤ , Octavia II 2010 ➤
Brake systems - Edition 11.2017
– Fit the hose of the bleeding bottle -1- onto the vent valve.
Note
Use the tool set for brake bleeding - VAS 6564- to loosen and
♦
tighten. While doing so, pull the bleeder hose through the
socket insert with a corresponding hollow adapter piece from
this set.
Fit a torque wrench on the socket insert with a corresponding
♦
hollow adapter piece for tightening the vent valve.
In view of the different versions of the wheels and the brake
♦
calipers, tightening the bleeder valves using the set of tools for
brake bleeding - VAS 6564- (with the torque wrench inserted)
cannot always be performed due to lack of space.
In this case, the corresponding wheels must be removed from
♦
the vehicle. Do not exchange the wheels and mark their posi‐
tion to the wheel hub.
– Loosen bleeder valve.
– Extract as much brake fluid as possible until even the smallest
air bubbles have escaped.
– Close vent valve.
– Tighten vent valve to corresponding tightening torque
⇒ page 153
– Repeat this procedure for all brake calipers in the prescribed
sequence until the brake system is fully bled.
Bleeding sequence
1. Rear right brake caliper
2. Rear left brake caliper
3. Front right brake caliper
4. Front left brake caliper
– Inspect pedal position and idle travel at brake pedal. Idle trav‐
el: max. 1/3 of pedal travel.
– Repeat the whole procedure if necessary (several times), until
perfect bleeding is achieved.
Vehicles with ABS
– Perform basic setting of the ABS control unit using the diag‐
nostic unit - VAS- ⇒ Vehicle diagnostic tester.
– Proceed by referring to the read-out on the display of the di‐
agnostic unit.
Caution
Before the basic setting of the ABS control unit is performed,
first of all the brake system must be fully bled until even the
smallest air bubbles have escaped from the system.
The air bubbles would penetrate into the ABS hydraulic unit
when performing the basic setting of the ABS control unit.
It is very difficult to remove these air bubbles from the ABS
hydraulic unit.
170
Rep. gr.47 - Brakes - hydraulics
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