Servicing front brakes (PR 1LA / 1LC / 1LJ / S4) — AUDI

Servicing front brakes (PR 1LA / 1LC / 1LJ / S4)
Note
Install all parts supplied in repair kit.
After renewing brake pads, depress brake pedal firmly several times with vehicle stationary so that the pads are properly seated in their normal operating position.
To draw off brake fluid from brake fluid reservoir use a bleeder bottle which is used only for brake fluid. Brake fluid is poisonous and must NOT be drawn off by sucking through a hose.
Check that the brake caliper moves freely by moving it from side to side.
1
Brake pads
Note
A wire for the wear indicator is fitted to the inner pad (with spring).
Always renew on both sides of axle
Wear limit
Chapter
Before inserting pads, clean guide surfaces and apply a thin coating of
polycarbamide grease
G 052 142 A2
.
Removing and installing
Chapter
Checking pad thickness
Maintenance
Booklet
803
Different versions available
the parts catalogue
Note
Clean the brake calipers thoroughly (grease-free) before inserting new brake pads. It is particularly important to ensure that contact surfaces for brake pads are clean.
2
Brake carrier
Bolt to wheel bearing housing
Removing and installing brake caliper with brake carrier
Chapter
3
Bolt, 190 Nm
Always renew if removed
4
Bearing bush
Insert into brake caliper housing
5
Guide pins, 30 Nm
6
Protective cap
Take off
Insert wear indicator wire in protective cap
7
Brake disc
Always renew on both sides of axle
Detach brake caliper prior to removing
Lubricate contact surfaces between brake disc and wheel hub with
polycarbamide grease
G 052 142 A2
.
Wheels and tyres
Rep. gr.
44
Thickness
Chapter
Allocation
Chapter
8
Wheel bolts
Fitting wheels
Wheels and tyres
Rep. gr.
44
9
Bolt
Tightening torque: 5 Nm
10
Spring clip
11
Brake line connection to brake hose, 15 Nm
12
Brake line
Screw into brake caliper housing
Screw into brake hose, counter hold on brake hose hexagon.
Do not twist hose when fitting
Ensure that lugs are properly seated in grooves in bracket.
13
Brake line connection to brake caliper, 17 Nm
14
Bracket
Bolt to brake caliper housing
Attach brake line
15
Hexagon bolt M 8 x 16
Tightening torque: 25 Nm
16
Brake caliper housing
If assembly work is required, do not leave caliper hanging from brake hose but secure it to body with wire
With the exception of
“Renewing brake pads”
Chapter
and
“Servicing front brake caliper”
, no repairs may be performed on the brake caliper.
Do not twist hose when fitting
Removing and installing brake caliper with brake carrier
Chapter
17
Retaining spring
Note correct installation position.
Note
The retaining spring must be pushed under the brake carrier after engaging onto both studs. If incorrectly installed, the wear of the outer pad cannot be adjusted, and the pedal travel will be increased as a result.