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Skoda Octavia 2020 Workshop Manual
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Skoda Octavia 2020 Workshop Manual

Skoda Octavia 2020 Workshop Manual

Brake system
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Service
Workshop Manual
Octavia 2020 ➤
Octavia 2021 ➤
Octavia 2025 ➤
Brake system
Edition 04.2024
Service Department. Technical Information
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted
unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.

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Summary of Contents for Skoda Octavia 2020

  • Page 1 Service Workshop Manual Octavia 2020 ➤ Octavia 2021 ➤ Octavia 2025 ➤ Brake system Edition 04.2024 Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document.
  • Page 2 Service List of Workshop Manual Repair Groups R e p a i r G r o u p 00 - Technical data 45 - Anti-lock brake system 46 - Brakes - mechanism 47 - Brakes - hydraulics Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A.
  • Page 3 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Contents 00 - Technical data ........... .
  • Page 4 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Removing and installing brake disc ......... .
  • Page 5 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 00 – Technical data Safety and repair instructions 10006T2ALN19.003.1 - 04.2024 Safety information Observe safety information ⇒ Safety information and repair notes; Rep. gr. 00 ; Safety information .
  • Page 6 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Brake test General notes ♦ The drive is provided by the dynamometer. ♦ For the brake test, ensure for vehicles with a manual gear‐...
  • Page 7 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 NOTICE If no test rig is available for four-wheel drive vehicles, the brake test can also be carried out on a standard single-axle roller dynamometer as follows: –...
  • Page 8 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Terminating the “test mode” Important • Speed at front wheels greater 0 km/h. • Speed at rear wheels lower 2.5 km/h or greater 9 km/h.
  • Page 9 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Electrical components Access to diagnoses ♦ 1 Renewing ABS control unit - J104- ♦ 2 Bleeding ABS control unit - J104- brake system ♦ 3 Renewing brake servo control unit - J539- ♦...
  • Page 10 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 ♦ 0003 - Anti-lock braking system ABS/EDL/TCS/ESP -J104 ♦ 0003 - Electrical components ♦ 0003 - G608 - Vacuum sender Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A.
  • Page 11 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Technical data Test and adjustment values ♦ 46 – Front brake/rear brake 46 – Front brake/rear brake Wear limits of brake discs and brake pads/linings...
  • Page 12 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 45 – Anti-lock brake system Safety and repair instructions Safety information Observe safety information ⇒ Safety information and repair notes; Rep. gr. 00 ; Safety information .
  • Page 13 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Installation location overview Overview of fitting locations – ABS/ESP The overview shows a left-hand drive vehicle as an example. For right-hand drive vehicles, the layout is a mirror image.
  • Page 14 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Control unit and hydraulic unit Summary of components: control unit and hydraulic unit 3.1.1 Assembly overview – control unit and hydraulic unit, left-hand drive vehi‐...
  • Page 15 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 1 - Brake line to brake caliper, rear right ❑ 5.25 mm in diameter and union screw with M10 x 1 thread ❑ With commercially...
  • Page 16 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 ❑ Depending on equipment/version ❑ Allocation ⇒ Electronic parts catalogue (ETKA) 10 - Bolt ❑ Qty. 1 or 2; allocation ⇒ Electronic parts catalogue (ETKA) .
  • Page 17 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 1 - Brake line to brake caliper, rear right ❑ 5.25 mm in diameter and union screw with M10 x 1 thread ❑ With commercially...
  • Page 18 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 9 - Nut ❑ Qty. 2 ❑ For aluminium heat shield 5 Nm ❑ For steel heat shield 8 Nm 10 - Nut ❑ Qty. 3 ❑...
  • Page 19 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 1 - Brake line from primary piston circuit of brake master cylinder to hydraulic unit ❑ 6 mm in diameter and union screw with M12 ×...
  • Page 20 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 ❑ ⇒ Rep. gr. 45 ; Removing and installing ABS control unit [J104]/ABS hydraulic unit [N55], right-hand drive vehicles ❑ ⇒ Rep. gr. 45 ; Separating control unit from and connecting to hydraulic unit...
  • Page 21 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 ♦ brake pedal actuator - V.A.G 1869/2- ♦ brake pedal actuator - V.A.G 1869/2- ♦ engine bung set - VAS 6122- ♦ sealing plug supplement set - VAS 6122/1- Removing ABS control unit - J104- is called control unit in this manual.
  • Page 22 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 All vehicles (continued) Vehicles with plastic heat shield, push-fit type – Unclip heat shield -1- in direction of -arrow A-. – Remove heat shield -1- in direction of -arrow B-.
  • Page 23 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Fit brake pedal actuator - V.A.G 1869/2- -A-. – Preload brake pedal by at least 60 mm. – Fit bleeder hose -2- onto bleeder valve -1- at front left.
  • Page 24 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Mark brake lines. – Unscrew union screws -1- through -6-. – Seal threaded holes and brake lines with suitable plugs from engine bung set - VAS 6122- and sealing plug supplement set - VAS 6122/1- .
  • Page 25 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 All vehicles (continued) Installing Install in reverse order of removal, observing the following: Important • The hydraulic unit must be pre-filled. – Insert hydraulic unit and control unit -1- with bracket -3- in opposite direction of -arrow-.
  • Page 26 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Continued Tightening torques Assembling special tools for tightening union screws Torque wrench - VAS 6854- Universal joint - V.A.G 1410/7- Open ring spanner insert AF 11 - V.A.G 1410/6- ♦...
  • Page 27 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Continued Vehicles with battery in engine compartment – Remove battery tray ⇒ Electrical system; Rep. gr. 27 ; Battery; Removing and installing battery tray .
  • Page 28 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Fit bleeder hose -2- onto bleeder valve -1- at front left. – Open bleeder valve -1- at front left. – Fit 2nd bleeder hose onto bleeder valve at rear left.
  • Page 29 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Pull out hydraulic unit and control unit -1- together with bracket -3- and rubber mountings -4- in direction of -arrow-. Installing Install in reverse order of removal, observing the following: Important •...
  • Page 30 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – ⇒ Rep. gr. 47 ; Bleed hydraulic system . If the control unit has been renewed, conclude the test plan for the renewal of control unit: –...
  • Page 31 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 NOTICE Risk of damage to hydraulic unit caused by removal of the ABS return flow pump. Malfunction of hydraulic unit. – Never detach the return flow pump from the hydraulic unit.
  • Page 32 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 All vehicles (continued) Control unit with 4 bolts – Unscrew bolts -1- to -4-. All vehicles (continued) – Pull off control unit -1- from hydraulic unit -2- evenly in direc‐...
  • Page 33 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 NOTICE Risk of damage if installation is not carried out correctly. Leakage between control unit and hydraulic unit. – A new control unit must be installed only 3 times.
  • Page 34 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Sensors Assembly overview – speed sensor on front axle Overview shows left side of vehicle as an example 1 - Wheel bearing housing 2 - Front left speed sensor - G47- / front right speed sen‐...
  • Page 35 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 1 - Wheel hub ❑ ⇒ Running gear, axles, steering; Rep. gr. 42 ; Wheel bearing, trailing arm; Assembly over‐ view – wheel bearing, torsion beam axle ❑...
  • Page 36 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 1 - Wheel bearing unit ❑ ⇒ Running gear, axles, steering; Rep. gr. 42 ; Wheel bearing, trailing arm; Assembly over‐ view – wheel bearing,...
  • Page 37 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 1 - Wheel bearing housing ❑ ⇒ Running gear, axles, steering; Rep. gr. 42 ; Wheel bearing, trailing arm; Assembly over‐ view – wheel bearing ❑...
  • Page 38 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Disconnect electrical connector -3-. – Unscrew bolt -2-. – Pull out speed sensor -1-. Installing Install in reverse order of removal, observing the following: Protected by copyright.
  • Page 39 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Removing – Disconnect electrical connector -3-. – Unscrew bolt -2-. – Pull out speed sensor -1-. Installing Install in reverse order of removal, observing the following: –...
  • Page 40 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Use sensor gauge - T10473- -A- to check ABS sensor ring -2- on wheel bearing unit -1- all around. Test pattern for ABS sensor ring...
  • Page 41 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 46 – Brakes - mechanism Safety and repair instructions Safety information Observe safety information ⇒ Safety information and repair notes; Rep. gr. 00 ; Safety information .
  • Page 42 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Front brake Summary of components: Front brake 2.1.1 Assembly overview – front brake The overview is shown for the left side of the vehicle as an example.
  • Page 43 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 1 - Holder 2 - Clip 3 - Brake line ❑ 14 Nm 4 - Grommet ❑ Can only be renewed with brake line 5 - Wheel bearing housing ❑...
  • Page 44 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 ❑ 35 Nm 17 - Brake pad ❑ Qty. 2 ❑ Wear limits ⇒ Rep. gr. 00 ; Test and adjustment values ❑ ⇒ Rep. gr. 46 ; Removing and installing brake pads 18 - Bolt ❑...
  • Page 45 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 1 - Brake caliper ❑ do not unscrew the brake hose when re‐ placing the brake pad ❑ ⇒ Rep. gr. 47 ; Sum‐...
  • Page 46 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 ❑ 8 Nm 15 - Hollow screw ❑ Captive with sealing rings ❑ Clean off corrosion from the sealing surface on the brake calliper ❑...
  • Page 47 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Removing – Push out the buckle in -arrow direction A- from the brake calliper -1- and in -arrow direction B-. – Unscrew the guide bolt -arrows-.
  • Page 48 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Clean the contact surfaces for brake pads on the brake carri‐ er -1, 2-. New brake pads NOTICE Risk of corrosion damage due to leaking brake fluid.
  • Page 49 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Pull off the electrical cable -2- of the old brake pad at the inside right -1- in -arrow direction A-. – Push the electric cable -2- onto the guides -arrows- of the brake pad at the inside right -1-.
  • Page 50 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 ♦ piston resetting appliance - T10145- WARNING Health hazard due to poisonous dust from brake system. Risk of irreversibly deposited dust particles in the lungs. Risk of respiratory health problems.
  • Page 51 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 CAUTION Risk of injury from chemical cleaning agents. Chemical clean‐ ing agents can be highly flammable and can cause eye and skin irritation. – Wear safety goggles, safety gloves and a respirator mask.
  • Page 52 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Pull off electrical wire -2- of old inner right brake pad -1- in direction of -arrow A-. – Push in electrical wire -2- at guides -arrows- on inner right brake pad -1-.
  • Page 53 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Removing – Remove brake caliper -1-, and it lay aside with brake line connected ⇒ Rep. gr. 46 ; Removing and installing brake caliper .
  • Page 54 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 CAUTION Risk of injury from chemical cleaning agents. Chemical clean‐ ing agents can be highly flammable and can cause eye and skin irritation. – Wear safety goggles, safety gloves and a respirator mask.
  • Page 55 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Pull off electrical wire -2- of old inner right brake pad -1- in direction of -arrow A-. – Push in electrical wire -2- at guides -arrows- on inner right brake pad -1-.
  • Page 56 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Push in brake pad -1- at an angle in area of -arrow- of pad retainers -3-. Important • When the brake pads are reinstalled, they must be inserted in the same position as previously marked.
  • Page 57 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Removing – Remove brake carrier ⇒ Rep. gr. 46 ; Removing and instal‐ ling brake carrier . – Unscrew bolt -2-. – Remove brake disc -1-.
  • Page 58 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Removing Removal and installation is described for the left side of the vehicle as an example. – ⇒ Chassis, axles, steering; Rep. gr. 44 ; Wheels, tyres;...
  • Page 59 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Unscrew the guide bolt -arrows-. – Remove the brake calliper -1-. Installing Installation is carried out in the reverse order. When installing, observe the following: CAUTION Protected by copyright.
  • Page 60 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Check brake fluid level ⇒ Maintenance ; Booklet ; Brake fluid level: Check . Tightening torques ♦ ⇒ Rep. gr. 46 ; Assembly overview: Front brake ♦...
  • Page 61 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Fit bleeder hose -2- onto bleeder valve -1-. – Open bleeder valve -1-. – Close bleeder valve -1-. – Remove bleeder hose -2-.
  • Page 62 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 CAUTION Risk of injury from chemical cleaning agents. Chemical clean‐ ing agents can be highly flammable and can cause eye and skin irritation. – Wear safety goggles, safety gloves and a respirator mask.
  • Page 63 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Unscrew bolts -1-. – Remove splash plate -2-. Installing Install in reverse order of removal, observing the following: Tightening torques ♦ ⇒ Rep. gr. 46 ; Assembly overview – front brake...
  • Page 64 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Tightening torques ♦ ⇒ Rep. gr. 46 ; Assembly overview – front brake Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A.
  • Page 65 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Rear brake Assembly overview – rear axle brake 3.1.1 Assembly overview – rear brake, multi-link suspension Overview shows left side of vehicle as an example Protected by copyright.
  • Page 66 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 1 - Splash plate for brakes ❑ ⇒ Rep. gr. 46 ; Re‐ moving and installing splash plate 2 - Bolt ❑ Qty. 3 ❑...
  • Page 67 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 ❑ Renew after removing ❑ 90 Nm +90° 3.1.2 Assembly overview – rear brake, torsion beam axle Overview shown for the left side of the vehicle as an example Protected by copyright.
  • Page 68 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 1 - Splash plate ❑ ⇒ Rep. gr. 46 ; Re‐ moving and installing splash plate 2 - Bolt ❑ Qty. 4 ❑ Renew after removing ❑...
  • Page 69 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 ❑ Can only be renewed with brake hose 18 - Guide pin ❑ Qty. 2 ❑ 25 Nm 19 - Dust cap ❑ Qty. 2 20 - Seal ❑...
  • Page 70 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Installing Install in reverse order of removal, observing the following: CAUTION Risk of injury from chemical cleaning agents. Chemical clean‐ ing agents can be highly flammable and can cause eye and skin irritation.
  • Page 71 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 All vehicles (continued) Vehicles with pad retainers: – Fit pad retainers -1- onto brake pads -2-. – Make sure that pad retainers -1- are properly seated.
  • Page 72 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 ♦ bit insert AF7 - VAS 262 025- ♦ brake pedal actuator - V.A.G 1869/2- WARNING Health hazard due to poisonous dust from brake system.
  • Page 73 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Fit bleeder hose -2- onto bleeder valve -1-. – Open bleeder valve -1-. – Close bleeder valve -1-. – Remove bleeder hose -2-.
  • Page 74 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Remove caps -1-. – Unscrew guide pin -1- using bit insert AF7 - VAS 262 025- and bit insert - VAS 262 013/12- -A-.
  • Page 75 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Mount brake caliper -1-. – Insert retaining spring -3-. – Make sure that retaining spring -3- is properly seated in guides on brake caliper -1-.
  • Page 76 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Removing – Remove brake pads ⇒ Rep. gr. 46 ; Removing and instal‐ ling brake pads . – Unscrew bolts -1-. – Remove backplate -2-.
  • Page 77 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Unscrew bolt -1-. – Remove brake disc -2-. CAUTION Risk of injury from chemical cleaning agents. Chemical clean‐ ing agents can be highly flammable and can cause eye and skin irritation.
  • Page 78 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Installing Install in reverse order of removal, observing the following: Tightening torques ♦ ⇒ Rep. gr. 46 ; Assembly overview - rear brake, disc brake version Protected by copyright.
  • Page 79 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Handbrake Removing and installing parking brake motor [V282]/[V283] Left parking brake motor - V282- and right parking brake motor - V283- are referred to hereafter as parking brake motor.
  • Page 80 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Make sure that seal -1- is properly seated. – Grease drive shaft -2-. For allocation, see ⇒ Electronic parts catalogue (ETKA) . – Position parking brake motor onto drive shaft -2-, and turn actuator until bolting points are aligned properly with each other.
  • Page 81 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Brake pedal Summary of components: brake pedal 5.1.1 Assembly overview – brake pedal, left-hand drive vehicles 1 - Bush ❑ Round 2 - Stud ❑...
  • Page 82 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Specified torque and tightening sequence Stage Nuts Specified tor‐ que/turning further angle -1- through -4- 25 Nm 5.1.2 Assembly overview – brake pedal, right-hand drive vehicles Protected by copyright.
  • Page 83 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 1 - Bolt ❑ 20 Nm 2 - Stud 3 - Bearing bush 4 - Mounting bracket ❑ ⇒ Rep. gr. 46 ; Re‐...
  • Page 84 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Remove accelerator pedal module - GX2- ⇒ Rep. gr. 20 ; Accelerator mechanism; Removing and installing accelerator pedal module [GX2] . – Unscrew nuts -1- to -4-.
  • Page 85 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Unscrew bolt -1-. – Remove nuts -arrows- – Remove mounting bracket -1-. Installing Install in reverse order of removal, observing the following: Tightening torques ♦...
  • Page 86 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Release mounting -3- at fasteners -2-, and remove it from brake pedal -1- in direction of -arrow-. Installing Install in reverse order of removal, observing the following: –...
  • Page 87 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Depress brake pedal -1- in direction of -arrow A-, and hold it in that position. – Insert release tool - T10159B- -2- into mounting -3-.
  • Page 88 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Pull out steering wheel as far as possible, and move it to topmost position. Use the full range of the steering column adjustment for this purpose.
  • Page 89 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Tightening torques ♦ ⇒ Running gear, axles, steering; Rep. gr. 48 ; Steering column; Assembly overview – steering column 5.5.2 Removing and installing brake pedal,...
  • Page 90 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Remove clips -arrows-, and push aside electrical wire -2-. – Push aside control unit for cornering light and headlight range control - J745- -5-, release clamp -2- in direction of -arrow A-, and pull it off in direction of -arrow B-.
  • Page 91 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 47 – Brakes - hydraulics Safety and repair instructions Safety information Observe safety information ⇒ Safety information and repair notes; Rep. gr. 00 ; Safety information .
  • Page 92 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Front brake callipers Summary of components: Front brake calliper, 1ZA, 1ZB 2.1.1 Summary of components: front brake calliper 1 - Brake caliper ❑ ⇒ Rep. gr. 46 ; Re‐...
  • Page 93 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 1 - Brake caliper ❑ ⇒ Rep. gr. 46 ; Re‐ moving and installing brake caliper 2 - Bleeder valve ❑ 10 Nm 3 - Dust cap 4 - Guide pin ❑...
  • Page 94 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Place a commercially available piece of wood -1- into brake caliper to prevent damage to brake caliper piston -2-. CAUTION Risk of hand injury due to brake caliper pistons moving out quickly.
  • Page 95 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Fit protective caps -2- on brake caliper pistons -1-. – Hold brake caliper pistons -1- in front of brake caliper -3-. – Use commercially available plastic wedge -A- to insert outer sealing lip of protective cap -2- in groove in brake caliper -3-.
  • Page 96 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Place a commercially available piece of wood -A- into brake caliper -1- to prevent damage to brake caliper pistons -2-. CAUTION Risk of hand injury due to brake caliper pistons moving out quickly.
  • Page 97 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Fit protective caps -2- on brake caliper pistons -1-. – Hold brake caliper pistons -3- in front of brake caliper -2-. – Use commercially available plastic wedge -A- to insert outer sealing lips of protective caps -1- in grooves -4- in brake caliper -2-.
  • Page 98 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Pull the guide bolt -1- outwards from the bearing bush (illus‐ tration as an example). – Pull the bearing bushing -2- out of the brake calliper.
  • Page 99 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Rear brake calliper Assembly overview - rear brake caliper The overview is shown for the left side of the vehicle as an example. 1 - Brake caliper ❑...
  • Page 100 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Brake Servo Unit / Master Brake Cylinder Summary of components: Brake Servo Unit / Master Brake Cylinder 4.1.1 Assembly overview – brake servo/brake master cylinder, left-hand drive vehicles Protected by copyright.
  • Page 101 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 1 - Brake fluid level warning contact - F34- ❑ ⇒ Rep. gr. 47 ; Re‐ moving and installing brake fluid level warn‐ ing contact [F34]...
  • Page 102 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 ❑ 20 Nm 14 - Plug ❑ Qty. 2 15 - Brake line from secondary piston circuit of brake master cylinder to hydraulic unit ❑...
  • Page 103 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 1 - Brake fluid level warning contact - F34- ❑ ⇒ Rep. gr. 47 ; Re‐ moving and installing brake fluid level warn‐ ing contact [F34]...
  • Page 104 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 ❑ 6 mm in diameter and union screw with M12 × 1 thread 14 - Nut ❑ Qty. 2 ❑ Renew after removing ❑ 20 Nm 15 - Brake master cylinder ❑...
  • Page 105 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 All vehicles (continued) – Separate electrical connectors -1- and -3-. – Unscrew nuts -3- and -4-. NOTICE Risk of damage to bulkhead due to improper separation.
  • Page 106 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Use a commercially available hot air blower to heat up and remove adhesive residue -arrows- with low heat. Installing Install in reverse order of removal, observing the following: –...
  • Page 107 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Fit new seal -3- to brake servo -1-. Important • Protective film must not be pulled off until immediately prior to installing. – Pull off backing -2-.
  • Page 108 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Vehicles with emission control module – Remove emission control module ⇒ Engine; Rep. gr. 26 ; Emission control; Removing and installing emission control module .
  • Page 109 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 NOTICE Risk of damage to bulkhead due to improper separation. – Never lever the brake servo off the bulkhead. – Pull brake servo off bulkhead, and remove it.
  • Page 110 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Fit new seal -3- to brake servo -1-. Important • Protective film must not be pulled off until immediately prior to installing. – Pull off backing -2-.
  • Page 111 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Vehicles with petrol engine – Remove air intake hose between turbocharger and air filter housing ⇒ Engine; Rep. gr. 24 ; Air filter; Assembly over‐...
  • Page 112 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 All vehicles (continued) NOTICE Risk of damage due to brake fluid spill. Malfunction of electric components due to corrosion. – Make sure that no brake fluid gets onto electrical contacts.
  • Page 113 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 All vehicles (continued) – Disconnect electrical connector -1-. – Unclip bracket -4-. – Unscrew brake lines -3- and -6-. – Seal threaded holes and brake lines with suitable plugs from engine bung set - VAS 6122- and sealing plug supplement set - VAS 6122/1- .
  • Page 114 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 4.3.2 Removing and installing brake master cylinder, right-hand drive vehicles Special tools and workshop equipment required ♦ brake filling and bleeding equipment - VAS 6860- ♦...
  • Page 115 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Disconnect electrical connector -2-. – Release fasteners -1- with commercially available screwdriv‐ er -A- in direction of -arrow- and place coolant expansion tank on engine.
  • Page 116 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 All vehicles (continued) Vehicle with heat shield: – Unscrew bolt -4-. – Release heat shield -3- from mountings -2-, and pull it out upwards.
  • Page 117 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Place lint-free cleaning cloths in area of engine, subframe and gearbox. – Use brake filling and bleeding equipment - VAS 6860- -A- to extract brake fluid from brake fluid reservoir -1-.
  • Page 118 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Vehicles with manual gearbox: – Pull supply hose -4- off brake fluid reservoir -1-. – Seal supply hose -4- with suitable sealing plugs from engine bung set - VAS 6122- and sealing plug supplement set - VAS 6122/1- , and tie it up.
  • Page 119 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Unscrew nuts -2-. – Pull out brake master cylinder -1-. Installing Install in reverse order of removal, observing the following: – Make sure that seal and push rod are seated correctly.
  • Page 120 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 All vehicles (continued) – Carry out function “Basic setting brake servo” using ⇒ Vehi‐ cle diagnostic tester ⇒ Rep. gr. 00 ; Access to diagnoses .
  • Page 121 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 – Push on warning contact until it can be heard to engage. Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A.
  • Page 122 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 Hydraulic system Bleeding hydraulic system Special tools and workshop equipment required ♦ Socket - VAS 6564- ♦ Socket - VAS 6564/9- ♦ brake filling and bleeding equipment - VAS 6860- Important •...
  • Page 123 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 • When doing this an ABS regulation must be performed at least once. Tightening torques Bleeder valves: Drum brakes ♦ ⇒ Brake system; Rep. gr. 46 ; Rear brake; Assembly over‐...
  • Page 124 Octavia 2020 ➤ , Octavia 2021 ➤ , Octavia 2025 ➤ Brake system - Edition 04.2024 • The pressure must not drop by more than 4 bar during the test period of 45 seconds. Renew brake master cylinder if drop in pressure exceeds specification.

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