ID.4 2021 ➤
Brake system - Edition 07.2021
❑ ⇒ Rep. gr. 46; Removing and installing brake shoes
3.3
Removing and installing brake shoes
Special tools and workshop equipment required
♦ assembly tool -T30114-
♦ brake drum calliper gauge -VAS 6787-
♦ pliers -T10623-
WARNING
Health hazard due to poisonous dust from brake system.
Risk of irreversibly deposited dust particles in the lungs. Risk
of respiratory health problems.
– Never blow out the brake system with compressed air.
Removal and installation are described for the left side of the
vehicle as an example.
Important
•
Do not operate the brake when the system is open.
Removing
– Remove wheel bearing unit ⇒ Running gear, axles, steering;
Rep. gr. 42; Wheel bearing assembly, trailing arm; Remov‐
ing and installing wheel bearing unit .
– Use assembly tool -T30114- -2- to remove retaining clips -1-
in direction of -arrow- . Press against pin from behind while
doing so.
– Lever brake shoe with parking brake lever -1- in direction of
-arrow A- off lower support -2- with aid of water pump pliers
-4- .
3. Rear brake
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ID.4 2021 ➤
Brake system - Edition 07.2021
– Place brake shoe with parking brake lever -1- in direction of
-arrow B- in front of lower support -2-
– Unhook lower return spring -3- .
– Remove opposing retaining clips -1- using assembly tool
-T30114- -2- . Press against pin from behind while doing so.
NOTICE
Risk of damage to wheel brake cylinder, boot and automatic
adjuster through improper handling.
Any damage will have a negative effect on the function of the
automatic adjuster and the brake.
– Remove both brake shoes carefully.
– Press together both brake shoes -1- and -2- at bottom in
direction of -arrow A- .
– Carefully pull down both brake shoes -1- and -2- in direction
of -arrow B- .
– Unhook parking brake cable -1- from parking brake lever
-2- .
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Rep. gr.46 - Brakes - mechanism
ID.4 2021 ➤
Brake system - Edition 07.2021
– Use a screwdriver -2- to lever upper return spring -1- out of
brake shoe without parking brake lever -3-
Installing
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.
– Observe safety data sheet and instructions for use of the
cleaning agent.
– Clean brake system.
Important
•
Use only commercially available methylated spirits for clean‐
ing the brake system.
– Grease contact surfaces -arrows- with lubricating paste
⇒ Electronic parts catalogue (ETKA) .
– Attach parking brake cable -1- to parking brake lever -2- .
3. Rear brake
49
ID.4 2021 ➤
Brake system - Edition 07.2021
– Install brake shoe with parking brake lever -1- using assem‐
bly tool -T30114- -3- .
– Fit retaining clip -2- .
– Insert upper return spring -1- in both brake shoes -2- and
-3- .
– Place brake shoe without parking brake lever -3- on wheel
brake cylinder -4- , lever it around in direction of -arrow- ,
and place it in front of lower support -5- .
– Attach lower return spring -1- . Lever brake shoe -3- into
lower support -4- using pipe wrench -2- .
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Rep. gr.46 - Brakes - mechanism
ID.4 2021 ➤
Brake system - Edition 07.2021
– Use assembly tool -T30114- -2- to insert hold-down pin and
retaining clip -1- .
– Observe correct position of clips -2- and -4- and return
springs -1- and -3- .
Important
•
Note that the automatic adjuster has a fine mechanism.
NOTICE
Risk of damage to automatic adjuster from improper handling.
The smallest indentations, cuts or deformations can negative‐
ly influence the function of the automatic adjuster.
– Avoid impacts.
– Do not deform components.
– Do not adjust on gear wheel.
Important
To ensure that the brake functions optimally, pre-adjustment
•
of the automatic adjuster is required. The automatic adjuster
3. Rear brake
51
ID.4 2021 ➤
Brake system - Edition 07.2021
must be free to rotate and it should be possible to install it
without applying force.
– The “rough adjustment” is achieved by screwing the bolt in
direction of -arrow A- onto the thread.
– For the “fine adjustment” , keep the regulator under pres‐
sure in direction of -arrow B- , and then perform “fine adjust‐
ment” .
NOTICE
Malfunction or risk of damage to the rear brake due to incor‐
rect adjustment of the automatic adjuster.
– The automatic adjuster must be adjusted manually to at‐
tain the requisite diameter at the brake shoes.
– Screw automatic adjuster in or out (rough setting) in such a
way that it sits between both brake shoes with slight preten‐
sion so that readjustment is activated.
– Spread brake shoes -1- using pliers -T10623- -2- .
– Position automatic adjuster on brake shoe with parking
brake lever first in direction of -arrow A- .
– Fit lever of automatic adjuster in recess of both brake shoes
-arrow B- .
1 - Automatic adjuster with thermal clip
2 - Parking brake lever
3 - Brake shoe
– Observe installation position of adjuster: short lugs of adjust‐
er must point towards brake carrier and threaded side must
point towards parking brake lever.
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Rep. gr.46 - Brakes - mechanism
ID.4 2021 ➤
Brake system - Edition 07.2021
– Clean centre seat of wheel hub of brake drum. Then, treat
with anti-corrosion material ⇒ Electronic parts catalogue
(ETKA) .
– Clean centre hole of brake drum. Then, treat with anti-corro‐
sion material ⇒ Electronic parts catalogue (ETKA) .
Important
•
Do not allow the anti-corrosion material ⇒ Electronic parts
catalogue (ETKA) to enter the wheel bolt threads.
– Install wheel bearing unit ⇒ Running gear, axles, steering;
Rep. gr. 42; Wheel bearing assembly, trailing arm; Remov‐
ing and installing wheel bearing unit .
– Press apart brake shoes -1- using pliers -T10623- -A- sev‐
eral times -arrows- until “specified dimension” a (see next
figure) is reached via automatic adjuster.
– Position brake drum calliper gauge -VAS 6787- -A- on brake
shoes -2- so that measuring points are located at height of
an imaginary line -arrows- drawn along pins -3- of retaining
clips.
Important
3. Rear brake
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ID.4 2021 ➤
Brake system - Edition 07.2021
•
“Specified dimension” -a- is 279.1 mm to 279.4 mm.
– Fit brake drum, and secure it with bolt.
Important
•
If the brake drum is re-used, remove any corrosion and take
account of the maximum permissible wear diameter ⇒ Rep.
gr. 00; Technical data for brakes .
– Depress brake pedal hard at least 25 times.
– Install wheel ⇒ Running gear, axles, steering; Rep. gr. 44;
Wheels, tyres; Installing wheel .
If the brake shoes have been renewed:
– Check the brake fluid level ⇒ Maintenance; Booklet .
All vehicles (continued)
– Ensure that brakes work properly before the vehicle is driv‐
en.
Tightening torques
♦ ⇒ Rep. gr. 46; Assembly overview – rear brake, drum brake
♦ Wheel bolts ⇒ Running gear, axles, steering; Rep. gr. 44;
Wheels, tyres; Specified torque for wheel bolts
54
Rep. gr.46 - Brakes - mechanism
2024 VW ID.4 Owner's Manual
