Leon Mk2
| Rear brake: repairing (vehicles with disc brakes) |
Note!| t | After replacing the brake pads, depress the brake pedal a few times with the vehicle stationary, so that the pads move to their working position. |
| t | To extract brake fluid from the reservoir, use an extraction bottle, which should only come into contact with the brake fluid. Brake fluid is toxic and should never be sucked out through a flexible tube! |
| t | Before dismantling a brake caliper or separating a brake hose the brake pedal support must be fitted. |
| t | Syphoned (used) brake fluid must not be re-used. |
| t | Wheel bolt tightening torque: 110 Nm |
| 1 - | Star-head screw |
| q | 4 Nm |
| 2 - | Brake disc |
| q | Brake disc: Ø 225.00 mm |
| q | Thickness of brake disk: 10.00 mm |
| q | Wear limit: 7.00 mm |
| q | In case of wear replace both discs on the same axle |
| q | Do not use force to separate the brake from the wheel hub, use deoxidant if necessary, as the brake disc could be damaged |
| 3 - | Protective cap |
| q | Removing and refitting: → Running gear, axles, steering; Rep. Gr.42 |
| q | Renew after removing |
| For perfect sealing always use a new dust sleeve cover. |
| This is the only way to ensure a long and trouble-free life. |
| 4 - | Twelve-sided nut |
| q | 175 Nm |
| q | Renew after removing |
| 5 - | Wheel bearing /wheel hub |
| q | With wheel hub and rotor for revolution sensor |
| q | Revolution sensor rotor → Chapter |
| q | Removing and installing: → Running gear, axles, steering; Rep. Gr.42 |
| The bearing and wheel hub are together in one casing. |
| These wheel bearings/Wheel hubs do not need inspection and have no play. They cannot be adjusted or repaired! |
| 6 - | Hexagon bolt |
| q | With plate spring |
| q | 30 Nm + 90° (1/4 turn) re-tighten |
| q | Renew after removing |
| 7 - | Cover plate |
| 8 - | Axle stub |
| q | Straightening is forbidden! |
| q | The thread must not be repaired! |
| 9 - | Hand brake cable |
| q | Hand brake: adjustment → Chapter |
| 10 - | Axle body |
| q | Straightening is forbidden! |
| q | Keep support surfaces and threaded holes for axle stem free from paint and dirt |
| 11 - | Revolution sensor rear left/right -G44-/-G46- |
| q | Checked by self-diagnosis: → VAS 5051 |
| q | Before fitting the sensor, clean the interior seating surface and coat with -G 000 650- lubricating paste |
| q | When fitting revolution sensors make sure that the cables are not twisted when inserted into the wheel housing |
| q | The rotors and front revolution sensors on both sides are identical |
| q | Removing and installing → Chapter |
| q | Revolution sensor cable: removing and installing → Chapter |
| 12 - | Allen head bolt |
| q | 8 Nm |
| 13 - | Allen head bolt |
| q | 65 Nm |
| 14 - | Brake back plate with guide pins and protective cover |
| q | Delivered as assembled part, with sufficient lubrication on the guide pins |
| q | If the protective covers or the guide pins have been damaged, fit the whole repair unit. Use the enclosed grease sachet to grease the guide pins |
| 15 - | Hoses and brake pipe |
| q | With hollow bolt and sealing washers Replace sealing washers |
| q | Hollow bolt tightening torque: 38 Nm |
| q | Do not unscrew hose when replacing brake pads |
| 16 - | Hexagon bolt |
| q | 35 Nm, self-locking |
| q | Renew after removing |
| q | When tightening and loosening, the guide pin should be immobilized |
| 17 - | Brake caliper |
| q | With brake lever for hand brake cable |
| q | In case of leakage from the hand brake lever, replace the brake caliper |
| Removal: |
| q | Brake pads: removal → Chapter |
| q | Fit brake pedal support |
| q | Loosen hose item → Item from the brake caliper |
| Installing: |
| q | Brake pads: fitting → Chapter |
| q | Tighten hose item → Item from the brake caliper |
| q | Remove brake pedal support |
| q | Bleed brake system → Chapter |
| q | Do not unscrew hose item → Item when replacing brake pads |
| q | Repair → Chapter |
| q | After the repair or replacement work adjust first the hand brake cable → Chapter |
| 18 - | Brake pads |
| q | Brake pad thickness: 12.00 mm |
| q | Wear limit: 7.50 including back plate |
| q | Always replace all the pads on the same axle |
| q | Removing and installing → Chapter |
| q | Thickness: checking: → Booklet |
| 19 - | Brake pad retaining spring |
| q | Must always be changed when changing brake pads |
| q | Fit to the brake backplate before fitting the brake pads → Chapter |