Brake Systems
Brake Systems
Workshop Manual
Ibiza, Córdoba, Córdoba Vario 1999 ➤
Brake systems
Edition 05.99
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
Repair Group
00 - Technical data
45 - Anti-locking brake system
46 - Brakes, Brake mechanics
47 - Brakes, Brake hydraulics
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
Technical information should always be available to the foremen and mechanics, because their
careful and constant adherence to the instructions is essential to ensure vehicle road-worthiness and
safety. In addition, the normal basic safety precautions for working on motor vehicles must, as a
matter of course, be observed.
Contents
00 - Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Contents i
Ibiza, Córdoba, Córdoba Vario 1999 ➤
Brake systems - Edition 05.99
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
ii Contents
Ibiza, Córdoba, Córdoba Vario 1999 ➤
Brake systems - Edition 05.99
00 – Technical data
1 Technical data
1.1 Brakes
Model Ibiza, Córdoba
Engine/capacity l 1.0 1.4 1.9 SDI 1.6
Output kW 37 44 47 55
Brake master cylin‐ mm 20.64 / 22.2 1)
20.64 / 22.2 1)
20.64 / 22.21) 20.64 / 22.21)
der
Brake servo ∅ 8′′ / 9′′1) 8′′ / 9′′1) 9′′ 8′′ / 9′′1)
Front brake disc mm ∅ 239 239 239 239
Brake disc, thick‐ mm 20 20 20 20
ness
Brake disc, wear mm 18 18 18 18
limit
Brake drum mm ∅ 200 200 200 200
Brake drum, wear mm ∅ 201.5 201.5 201.5 201.5
limit
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
Brake wheel cylin‐ permitted
mm ∅ 17.46
unless authorised by SEAT S.A. SEAT S.A does 17.46 17.46
not guarantee or accept any liability with 17.46
der respect to the correctness of information in this document. Copyright by SEAT S.A.
der
Brake servo ∅ 8′′ / 9′′2) 9′′ 9′′ 9′′ 9′′
Front brake disc mm ∅ 239 256 256 256 256
Brake disc, thick‐ mm 20 20 20 20 20
ness
Brake disc, wear mm 18 18 18 18 18
limit
Brake drum mm ∅ 200 200 200 200 200
Brake drum, wear mm ∅ 201.5 201.5 201.5 201.5 201.5
limit
Brake wheel cylin‐ mm ∅ 17.46 17.46 / 19.05 19.05 17.46 / 19.05 19.05
der 3) 3)
1. Technical data 1
Ibiza, Córdoba, Córdoba Vario 1999 ➤
Brake systems - Edition 05.99
1. Technical data 3
Ibiza, Córdoba, Córdoba Vario 1999 ➤
Brake systems - Edition 05.99
The hydraulic unit -a- and control unit -b- form one component.
Separating is only possible when removed.
New control units via the replacement parts service are not coded
and require coding after installation.
Malfunctions on the ABS systems do not influence the brake sys‐
tem and servo. The conventional braking system remains func‐
tional even without ABS.
pedal).
♦ Absolute cleanliness is required when working on the anti-
locking brake system, it is not permitted to use any products
which contain mineral oils, such as oils, greases etc.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
❑ The hydraulic pump -V64- and valve block must not be separated from one another ⇒ page 11
❑ When changing the hydraulic unit, always seal the old part with the plugs from the repair set -1H0 698
311 A-
4 - ABS/EDL control unit -J104-
❑ Checked by self-diagnosis
❑ Located on the hydraulic unit on left of engine compartment.
❑ Checking the multi-pin connector to control unit ⇒ VAS 5051
❑ Do not disconnect connector before successfully completing interrogation of fault memory. First switch
ignition off then separate connector.
5 - Brake light switch -F-
❑ The brake light switch is open in the rest position.
❑ Adjusting ⇒ page 49
❑ Can be checked via read measured value block ⇒ VAS 5051
♦ If the ABS warning lamp -K47- -1- , goes out, the brake system
warning lamp -K118- -2- remains on and 3 audible warning are
heard, the fault may be:
a - the brake fluid level is too low.
b - a fault in the activation of the brake system warning lamp -
K118- ⇒ Current flow diagrams, Electrical fault finding and Fitting
locations
♦ If the ABS warning lamp -K47- -1- and the brake system warn‐
ing lamp -K118- -2- both come on, the ABS system is defective
and the EBD (electronic brake pressure distributor) is not func‐
tioning. A change in braking behaviour must be reckoned with.
Caution
When the ABS warning lamp -K47- and the brake system
warning lamp -K118- have lit up it is possible that the rear
wheels will lock up earlier when braking.
♦ If the handbrake warning lamp -K14- -3- does not go out after
switching on the ignition, the fault may be:
a - the handbrake is pulled on.
b - the switch for the warning lamp -K14- is defective or incorrectly
set.
c - there is a wire routing fault. ⇒ Current flow diagrams, Electrical
fault finding and Fitting locations
Vehicles with ABS/EDL
Problem: “EDL is not functioning on vehicle” .
For this problem a possible fault cause may be the brake light
switch is incorrectly adjusted ⇒ page 49 .
A further possibility is that the brake light switch is not functioning
⇒ VAS 5051 .
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
Caution
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
If after the test sequence is carried out, the ABS -K47- control
indicator and -K118- brake system indicator remain lit, the rear
wheels may be braking ahead of time.
Note!
Pump and valve block must not be separated from one another.
1 - Brake servo
2 - Tandem brake master cyl‐
inder
3 - Brake fluid reservoir
4 - Cap Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
5 - Self-locking nut, 25 Nm respect to the correctness of information in this document. Copyright by SEAT S.A.
3. Assembly overview - hydraulic unit, brake servo/ brake master cylinder (left-hand drive) 11
Ibiza, Córdoba, Córdoba Vario 1999 ➤
Brake systems - Edition 05.99
Note!
Pump and valve block must not be separated from one another.
1 - Bracket
❑ Is secured to the mount‐
ing plate
2 - Self-locking nut, 10 Nm
❑ Always renew
3 - Rubber damper
4 - Self-locking nut, 25 Nm
❑ Always renew
5 - Stud, 8 Nm
6 - ABS hydraulic unit
7 - Brake pipe connection
❑ Hydraulic unit to front
left brake caliper
8 - Brake pipe connection
❑ Hydraulic unit to rear
right wheel cylinder
9 - Brake pipe connection
❑ Hydraulic unit to rear left
wheel cylinder
10 - Brake pipe connection
❑ Hydraulic unit to front
right brake caliper
11 - Control unit
12 - Heat shield
13 - Bolt, 8 Nm
14 - Clip
15 - Brake pipe connection
❑ Master brake cylinder/
secondary piston circuit to hydraulic unit
16 - Brake pipe connection
❑ Brake master cylinder/primary piston circuit to hydraulic unit
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
Caution
4.1.1 Removing
– Obtain radio code on vehicles with coded radio.
– Disconnect battery.
– Remove coolant expansion tank and swing to side.
– Draw off as much brake fluid as possible from brake fluid res‐
ervoir using a suction bottle.
– Remove bolts from control unit and pull control unit off.
When pulling off control unit, ensure that the hydraulic unit valve
dome is not canted against the control unit solenoid valves.
Cover control unit magnetic coils with a lint-free cloth.
After separating control unit and hydraulic unit use transportation
protection for valve dome.
4.1.2 Installing
Note!
When assembling control unit and hydraulic unit, ensure that the
hydraulic unit valve dome is not canted against the control unit
solenoid valves.
– Using new bolts, screw control unit to hydraulic unit. Observe
tightening torque max. 4 Nm.
– Fit connector on hydraulic pump motor.
– Bolt ABS unit to bracket.
Do not tighten bolts completely. Attaching the individual brake
pipes is made easier.
– After tightening brake pipes, tighten hydraulic unit.
– Further installation is carried out in the reverse sequence.
– Bleeding brake system ⇒ page 63 .
– Enter radio code.
– Code control unit ⇒ VAS 5051 .
Tightening torques:
For left-hand drive vehicles:
Control unit to hydraulic unit max. 4 Nm
Torx socket head bolts for hydraulic unit on bracket 8 Nm
Nut for tandem master brake cylinder to brake servo 25 Nm
Brake pipes to ABS unit:
Thread M 10 x 1 15 Nm
Thread M 12 x 1 15 Nm
For right-hand drive vehicles:
Control unit to hydraulic unit max. 4 Nm
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
Nut for hydraulic unit on bracket 10byNm
permitted unless authorised SEAT S.A. SEAT S.A does not guarantee or accept any liability with
Bracket on mounting plate 25 Nm
respect to the correctness of information in this document. Copyright by SEAT S.A.
5.1 Removing and installing parts of ABS system on front axle, VW ll brake
caliper
5. Removing and installing parts of ABS system on front and rear axle 17
Ibiza, Córdoba, Córdoba Vario 1999 ➤
Brake systems - Edition 05.99
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
Removing
– Obtain radio code on vehicles with coded radio.
– Disconnect battery.
5. Removing and installing parts of ABS system on front and rear axle 19
Ibiza, Córdoba, Córdoba Vario 1999 ➤
Brake systems - Edition 05.99
5.2 Removing and installing parts of ABS system on front axle, Lucas brake
caliper
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
5. Removing and installing parts of ABS system on front and rear axle 21
Ibiza, Córdoba, Córdoba Vario 1999 ➤
Brake systems - Edition 05.99
Removing
– Obtain radio code on vehicles with coded radio.
– Disconnect battery.
– Release control unit connector -arrow 1- and pull off
-arrow 2- .
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permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
5. Removing and installing parts of ABS system on front and rear axle 23
Ibiza, Córdoba, Córdoba Vario 1999 ➤
Brake systems - Edition 05.99
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
5.3 Removing and installing parts of ABS system on rear axle (vehicles with
drum brakes)
5. Removing and installing parts of ABS system on front and rear axle 25
Ibiza, Córdoba, Córdoba Vario 1999 ➤
Brake systems - Edition 05.99
Removing
– Raise vehicle.
– Remove wheel.
– Releasing brakes.
– Insert a screwdriver through a hole in the brake drum and push
the wedge upwards.
– Remove brake drum.
– Remove wheel hub with wheel bearing
Protected ⇒ Running
by copyright. Gear,or commercial purposes, in part or in whole, is not
Copying for private
Axles, Steering; Rep. Gr. permitted
42 ; Servicing wheel
unless authorised bearings
by SEAT S.A. SEAT. S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
– Check rotor and renew if necessary.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
5. Removing and installing parts of ABS system on front and rear axle 27
Ibiza, Córdoba, Córdoba Vario 1999 ➤
Brake systems - Edition 05.99
Note!
♦ After replacing brake pads, depress brake pedal firmly several times with vehicle stationary so that the brake
pads are properly seated in the 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!
♦ Fit brake pedal depressor -V.A.G 1869/2- before removing a brake caliper or disconnecting a brake hose.
♦ Wheel bolts tightening torque: 110 Nm
♦ Do not re-use used brake fluid.
1 - 10 Nm
2 - ABS speed sensor
❑ Before inserting sensor,
clean fitting hole inner
surface and coat with lu‐
bricating paste -G 000
650-
3 - Speed sensor rotor
❑ Only on vehicles with
ABS
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permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
4 - Hub
respect to the correctness of information in this document. Copyright by SEAT S.A.
7 - Cross-head screw
8 - Hexagon bolt, 10 Nm
9 - Splash plate
10 - Wheel bearing housing
11 - Brake pad
❑ With riveted retaining spring
❑ Checking thickness ⇒ Maintenance ; Booklet
❑ Always renew both sides
❑ Removing and installing ⇒ page 29
❑ Allocation ⇒ Replacement parts catalogue
12 - Lower hexagon socket head bolt, 25 Nm
13 - Upper hexagon socket head bolt, 25 Nm
14 - Lower spacer sleeve
15 - Upper spacer sleeve
16 - Lower bush
17 - Upper bush
18 - Lower sleeve
19 - Upper sleeve
20 - Brake caliper
❑ Repairing ⇒ page 29
❑ Removing and installing ⇒ page 29
21 - Brake hose
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permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
1.2.1 Removing
– After removing the hexagon socket head bolts swing caliper
out upwards.
– Take off brake caliper housing and secure with wire so that the
weight of the brake caliper does not stress or damage the
brakehose.
– Remove brake pads.
Use methylated spirit only for cleaning the brake caliper housing.
1.2.2 Installing
Note!
Before inserting new brake pads, press piston back into the cyl‐
inder with resetting tool. Before pressing the piston back, draw off
brake fluid from the reservoir with a bleeder bottle. Otherwise
particularly if reservoir has been topped up, fluid will overflow and
cause damage.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
– Pressing piston back. respect to the correctness of information in this document. Copyright by SEAT S.A.
Note!
♦ 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.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
♦ To draw off brake fluid from the reservoir, use
permitted a authorised
unless bleederbybottle which
SEAT S.A. is used
SEAT S.A does notonly for orbrake
guarantee fluid.
accept any Brake
liability with fluid
is poisonous and must on no account be sucked out
respect to the by mouth
correctness usinginathishose!
of information document. Copyright by SEAT S.A.
♦ Fit brake pedal depressor -V.A.G 1869/2- before removing a brake caliper or disconnecting a brake hose.
♦ Wheel bolts tightening torque: 110 Nm
♦ Do not re-use used brake fluid.
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permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
♦ Piston resetting tool -T20055- respect to the correctness of information in this document. Copyright by SEAT S.A.
1.4.1 Removing
– Remove lower brake caliper housing securing bolt. Counter
hold on guide pin.
1.4.2 Installing
Note!
Before inserting new brake pads, press piston back into the cyl‐
inder with resetting tool. Before pressing the piston back, draw off
brake fluid from the reservoir with a bleeder bottle. Otherwise
particularly if reservoir has been topped up, fluid will overflow and
cause damage.
Note!
Note!
♦ After replacing the brake pads, step on the brake pedal a few times with the vehicle stopped, for the pads
to adapt to their working position.
♦ Use an extraction bottle, which should only come into contact with the brake fluid, to extract fluid from the
tank. Brake fluid is toxic and should never be sucked into the mouth through a flexible tube!
♦ Wheel bolt tightening torque: 110 Nm.
♦ Never reuse used brake fluid.
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permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
1 - Brake disc
❑ Dimensions and wear
limit ⇒ page 1
❑ In case of wear replace
the discs of the same
shaft.
❑ Do not use force to sep‐
arate the brake from the
wheel stock, use deoxi‐
dant if necessary, as
you could damage the
brake disc.
2 - Cupra -R- brake clip
3 - Brake clip securing bolt Tor‐
que 110 Nm
4 - Clip support
5 - Brake pads
❑ Removal and assembly
⇒ page 36
❑ Thickness 9 mm
6 - Brake pad securing bolt
7 - Compression spring
8 - Brake fluid hose Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
9 - Connection bolt support to respect to the correctness of information in this document. Copyright by SEAT S.A.
clip Tightening torque 95 Nm
Remove the brake pads from the clip: on the work bench
– Remove the bolts -arrow- that join the pads to the brake clip
using a 4-mm punch in order to remove the pads.
Note!
1.7.1 Removal
– Turn steering towards the clip.
Note!
– Remove the two -arrows- bolts that secure the pads to the
brake clip using a 4-mm-diameter punch.
– Remove the pads and the retainer spring -1- through the front
part of the brake clip.
Only alcohol may be used to clean the brake clip housing.
Note!
Before fitting the new brake pads retract the pistons in the cylin‐
der. Before retracting the pistons use an extraction bottle to
extract fluid from thebytank.
Protected Otherwise
copyright. if brake
Copying for private fluid has
or commercial been
purposes, re‐or in whole, is not
in part
placed it might leakunless
permitted andauthorised
causebydamage.
SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
1.7.2 Installation
– Install in reverse order.
Note!
♦ After replacing a wheel cylinder, a back plate and brake linings, depress brake pedal firmly several times
with vehicle stationary so that the brake linings 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!
♦ Depress brake pedal and block before removing a brake wheel cylinder, a backing plate or disconnecting
a brake pipe.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
– Unscrew brake pipe Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
⇒ Item 14 (page 39) respect to the correctness of information in this document. Copyright by SEAT S.A.
– Install wheel hub with wheel bearings ⇒ Running Gear, Axles, Steering; Rep. Gr. 42 ; Servicing wheel
bearings
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
Note!
1 - Spring plate
❑ To remove, push
against the spring and
turn through 90°
2 - Spring
3 - Brake shoe with lever for
handbrake
❑ Removing and installing
⇒ page 41
❑ Adjusting handbrake
⇒ page 42
4 - Upper return spring
❑ Unhook with pliers
5 - Lower return spring
❑ Lubricate contact points
with paste -G 000 650-
6 - Spring
7 - Brake shoe
❑ Removing and installing
⇒ page 41
❑ Minimum lining thick‐
ness 2.5 mm
❑ Checking thickness Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
⇒ Maintenance ; Book‐
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
let
8 - Sealing cap
❑ Remove to check brake
lining thickness
9 - Pin
10 - Back plate
11 - Hexagon socket head bolt,
10 Nm
12 - Wheel cylinder
❑ Checking for leaks ⇒ page 41
13 - Wedge
❑ To remove and install the brake drum, push wedge upwards (tool through a wheel bolt hole)
⇒ page 39
14 - Push rod
❑ Lubricate contact points with paste -G 000 650-
15 - Locating spring
❑ Unhook with pliers
2.4.1 Removing
– Remove brake drum ⇒ page 37 , Removing and installing rear
wheel brakes.
– Remove spring plate.
– Lever out brake shoe in -direction of arrow- with aid of a screw‐
driver behind support plate.
– Place brake shoe down on lower support plate.
– Unhook lower return spring.
– Unhook handbrake cable.
– Remove brake shoes.
– Clamp brake shoes in vice.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
2.4.2 Installing
– Connect locating spring and fit brake shoes on the push rod.
– Insert wedge.
Note!
– Release handbrake.
– Remove handbrake lever trim ⇒ General body repairs, Inte‐
rior; Rep. Gr. 68 ; Compartments, covers and trims; Removing
hand grip and trim for handbrake .
– Firmly depress brake pedal once.
– Pull handbrake lever on four notches.
– Tighten adjusting nuts -arrows- until both wheels are difficult
to turn by hand.
– Release handbrake and check that both wheels turn freely. If
required turn adjusting nut(s) back slightly.
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Note!
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
3.1.1 Removing
– Remove handbrake lever trim ⇒ General Body Repairs, Inte‐
rior; Rep. Gr. 68 ; Compartments, covers and trims; Removing
hand grip and trim for handbrake .
– Release handbrake.
– Loosen relevant adjustment nut -arrows- until the handbrake
cable can be unhooked from the compensator.
– Raise vehicle.
– Remove wheel.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
– Remove brake drum.
respect to the correctness of information in this document. Copyright by SEAT S.A.
3.1.2 Installing
– Slide handbrake cable into guide tube -1- in
-direction of arrow- .
– Hook handbrake cable into retainer -arrow- .
– Connect handbrake cable to brake lever.
– Install brake drum.
1 - Handbrake lever
2 - Hand grip
❑ Pull off forwards having
first pressed locking lug
down with a small
screwdriver
3 - Hexagon nut, 25 Nm
4 - Compensator
5 - Handbrake cable
❑ Removing and installing
(drum brakes)
⇒ page 44
6 - Adjusting nut
❑ Adjusting handbrake:
– Vehicles with drum
brakes ⇒ page 42
7 - Lock nut
❑ Lock on adjusting nut
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permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
Caution
Note!
1 - Mounting bracket
2 - Hexagon bolt, 25 Nm
3 - Brake pedal switch -F47-
❑ For engine control unit
❑ Checking or adjusting ⇒
Rep. Gr. 24 ; Checking
additional signals
4 - Self-locking hexagon nut,
25 Nm
❑ Qty. 5, to secure mount‐
ing bracket to brake ser‐
vo
5 - Brake light switch
❑ Removing and installing
❑ Before installing brake
light switch, connect
brake pedal to brake
servo push rod
6 - Securing clip
❑ Ensure seated securely
7 - Pivot pin for brake and
clutch pedals
❑ Installation position:
The groove -arrow- is lo‐
cated on the clutch ped‐
al side.
8 - Brake pedal
9 - Mounting bush
❑ To support casing
10 - Pad
11 - Clutch pedal
❑ Removing and installing ⇒ Rep. Gr. 30 ; Clutch
12 - Securing clip Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
13 - Hexagon nut, 25 Nm
14 - Support
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
– Remove driver's side covering.
– Remove brake light switch.
– Remove brake pedal switch -F47- .
– First press brake pedal in direction of brake servo and hold.
1- Brake pedal
2- Push rod
3- Retaining lugs
– Fit device -U-40015- and pull towards drivers seat, when doing
this counter-hold on brake pedal (pedal must not be able to
move to rear at this moment). This will press the retainers
-3- of the mounting off the ball head of the push rod -2- .
Note!
For ease of illustration separating the brake pedal from the brake
servo is shown with the pedal cluster removed.
Note!
5.2.1 Removing
– Remove driver's side stowage compartment.
– Remove brake light switch.
– Remove brake pedal switch -F47- .
– Separate brake pedal from brake servo ⇒ page 48 .
– Take brake pedal side pivot pin securing clip off towards switch
panel -direction of arrow- by locating a screwdriver under the
retaining clip -A- .
– Pull clutch and brake pedal pivot pin out to the left, until the
brake pedal can be removed.
– Remove brake pedal.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
5.2.2 Installing
Install in reverse order.
– Install brake light switch and adjust ⇒ page 49 .
– Install brake pedal switch -F47- and adjust ⇒ Rep. Gr. 24 ;
Checking additional signals .
Note!
Note!
♦ When carrying out repairs install all parts supplied in repair kit.
♦ New brake calipers are filled with brake fluid and are pre-bled.
♦ Apply thin coat of fitting paste -G 052 150 A2- to brake cylinders, pistons and seals.
1 - Protective seal
❑ Do not damage when in‐
serting piston
2 - Piston
❑ Removing and installing
⇒ page 50
❑ First apply a thin coat of
fitting paste -
G 052 150 A2- .
3 - Brake caliper housing
4 - Seal
❑ Removing and installing
⇒ page 50
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
♦ Wedge -U-30800-
1.1.1 Removing
– Force piston out of brake caliper housing using compressed
air.
Note!
Note!
1.1.2 Installing
– Clean the piston surfaces and seal only with white spirits and
then dry.
– Apply a thin coat of fitting paste -G 052 150 A2- to piston and
seal before installing.
Note!
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permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
– Press piston into brake caliper housing with piston resetting
tool -T20055- .
Note!
The protective seal outer sealing lip will then locate in the piston
groove.
Note!
♦ When carrying out repairs install all parts supplied in repair kit.
♦ New brake calipers are filled with brake fluid and are pre-bled.
♦ Apply thin coat of fitting paste -G 052 150 A2- to brake cylin‐
ders, pistons and seals.
1 - Protective seal
2 - Bleed valve
❑ Apply a thin coat of fit‐
ting paste -G 052 152
A2- to the threads be‐
fore screwing in
3 - Brake caliper housing
4 - Self-locking
Protected hexagon
by copyright. Copying for private bolt,
or commercial purposes, in part or in whole, is not
35unless
permitted Nmauthorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
❑ Renew
❑ When loosening and
tightening counter-hold
on guide pin
5 - Seal
❑ Take out using wedge -
U-30800- ⇒ page 53
6 - Piston
❑ Removing and installing
⇒ page 53
❑ First apply a thin coat of
fitting paste -
G 052 150 A2- .
7 - Protective seal
❑ Do not damage when in‐
serting piston
8 - Brake carrier with guide
pins and protective caps
❑ Brake carrier with guide
pins and protective cap
❑ Supplied as replace‐
ment part assembled
with sufficient grease on
guide pins
❑ If protective caps or guide pins are damaged use repair kit. Use grease sachet supplied to lubricate guide
pins.
♦ Wedge -U-30800-
2.1.1 Removing
– Force piston out of brake caliper housing using compressed
air.
Note!
Note!
2.1.2 Installing
– Clean the piston surfaces and seal only with white spirits and
then dry.
– Apply a thin coat of fitting paste -G 052 150 A2- to piston and
seal before installing.
– Place protective seal with the outer sealing lip on the piston.
– Using wedge -U-30800- , insert the inner sealing lip into the
grove in the cylinder.
Note!
– Press piston into the brake caliper housing using piston reset‐
ting tool.
Note!
The protective seal outer sealing lip will then locate in the piston
groove.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
Note!
1 - Protection covers
❑ Avoid damaging them
on fitting them to the pis‐
ton.
2 - Pistons
❑ Removal and installa‐
tion ⇒ page 56
❑ Oil the piston first with a
thin layer of -G052 154
A2- paste.
3 - Housing for brake clip
4 - O-ring gasket rings
❑ Removal and installa‐
tion ⇒ page 56
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
3.1.1 Removal permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
– Fit tool -T20121- to the brake clip -arrow- to make sure the
pistons that are not to be removed do not move.
– Release the piston from the brake clip applying compressed
air.
– Extract the gasket ring with the -U-30800- installation wedge.
Note!
♦ Make sure the cylinder surface does not get damaged during
disassembly.
♦ Do not change the position of the pistons, they are to be fitted
to their cylinder.
3.1.2 Installation
– Clean the surfaces of the piston and ring gaskets with alcohol
only and then dry.
– Cover the surface of the piston and ring gasket with a thin layer
of -G 052 152 A2- paste before fitting them.
– Insert the sealing O-gasket inside the groove of the cylinder
using wedge -U-30800- .
– Fit the outside sealing protective cover over the piston.
– Carefully fit the piston to its corresponding cylinder in the brake
clip housing.
– Tighten the brake piston with tool -T20121- to attach it to its
cylinder.
– In the course of this operation the outside seal falls into the
slot in the brake clip.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
Note!
– Lift vehicle and connect the pressure gauges to front left brake
caliper and to the rear right wheel cylinder.
– Bleed both gauges.
10) The term “unladen” means: The weight of the vehicle ready for the road (full
fuel tank, spare wheel, tool kit and jack).
Note!
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
Caution
When filling with brake fluid using brake filling and bleeder unit
-SAT 1150- , it is essential to ensure that the filling pressure of
1 bar is not exceeded.
Note!
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
♦ Bleeding the braking system on
permitted vehicles
unless with
authorised ABS
by SEAT isSEAT
S.A. carried
S.A does not guarantee or accept any liability with
Note!
Note!
Note!
Complete master cylinders and brake servos can be replaced independently of each other.
3 - Sealing ring Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
❑ Renew respect to the correctness of information in this document. Copyright by SEAT S.A.
7.1.1 Removing
– Remove retainer for wiring loom from vacuum pump.
– Loosen vacuum hose securing clamp -arrow A- and pull hose
off.
– Remove bolt -arrows B- on cylinder head flange.
– Remove vacuum pump.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
Note!
7.1.2 Installing
Note!
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permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
8.1.1 Removing
– Note or request radio code on vehicles with coded radio if
necessary.
– Disconnect battery.
Vehicles with ABS or ABS/EDL
– Remove control unit and hydraulic unit ⇒ page 14 .
Continued for all vehicles
– Lay out sufficient lint free clothes in area of plenum chamber,
engine and gearbox.
– Draw off as much brake fluid as possible from brake fluid res‐
ervoir using a suction bottle.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
– Pull connector off brake fluid level switch.
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
– Disconnect brake pipes on brake master cylinder and seal
brake pipes with plugs from repair kit -1H0 698 311 A- .
– Unscrew brake master cylinder nuts.
– Carefully take brake master cylinder out of brake servo unit.
8.1.2 Installing
Install in reverse order.
Observe the following points when installing:
– When fitting together the brake master cylinder and brake ser‐
vo unit, ensure that the push rod is correctly located in the
brake master cylinder.
– After installing, bleed brake system ⇒ page 63 .
Note!
Removing and installing the brake servo can deviate from the fol‐
lowing description slightly, this will depend on engine and equip‐
ment level.
9.1.1 Removing
– Note or request radio code on vehicles with coded radio if
necessary.
– Disconnect and remove battery.
– Pull connector off brake fluid level switch.
– Remove coolant expansion tank, pull off plug and swing to
side.
– Disconnect vacuum hose from brake servo.
– Unbolt both mountings of the clutch cable.
Vehicles with ABS or ABS/EDL
– Remove control unit and hydraulic unit ⇒ page 14 .
Vehicles without ABS or ABS/EDL
– Disconnect brake pipes on brake master cylinder and seal
brake pipes with plugs from repair kit -1H0 698 311 A- .
Continued for all vehicles
– Remove trim below dash panel.
– Remove brake light switch.
– Remove brake pedal switch -F47- .
– Separate brake pedal from brake servo ⇒ page 48 .
– Unbolt brake servo.
– Guide brake servo with brake master cylinder out forwards and
remove.
9.1.2 Installing
Install in reverse order.
– Adjust brake light switch ⇒ page 49 .
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
– Install brake pedal switch -F47-permitted
and adjust ⇒ Rep.
unless authorised Gr. S.A.
by SEAT 24 SEAT
; S.A does not guarantee or accept any liability with
Checking additional signals . respect to the correctness of information in this document. Copyright by SEAT S.A.
10 Definitions
These explanations refer only to this assembly group: Brake sys‐
tem. These definitions are not necessarily valid generally.
ABS
The anti-lock brake system (ABS) is a regulating system in the
brake system that prevents the wheels from locking when braking.
ABS/EDL
Anti-lock brake system with electronic differential lock (type of
traction control system).
Speed sensor
The speed sensor sends the speed signal to the control unit.
Performing self-diagnosis
Connecting fault reader unit to read fault memory.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.