Leon Mk1
Note
|
| 1 - | Circlip |
| 2 - | Piston pin |
| q | If it is difficult to move, heat the piston to 60 °C. |
| q | Removing and installing with the awl -10 14- |
| 3 - | Piston |
| q | Checking → Chapter |
| q | Mark installation position and cylinder number. |
| q | Arrow on piston crown points to pulley end |
| q | Install with piston ring compressor |
| 4 - | Compression rings |
| q | Offset gaps by 120° |
| q | Remove and fit compression rings using pliers adapted for piston rings |
| q | The mark „TOP“ must face towards piston crown |
| q | Checking ring gap → Chapter |
| q | Check the measured backlash between the circular grooves → Chapter |
| 5 - | Oil scraper rings |
| q | Carefully remove and install by hand the oil scraper rings made up of 3 parts |
| q | Checking ring gap → Chapter |
| q | The play between the rings and the grooves cannot be measured |
| 6 - | Conrod bolt |
| q | M8×1: 30 Nm and then turn 90° further |
| q | Renew |
| q | Oil threads and contact surface. |
| q | To measure radial play, tighten to the applicable torque, without retightening |
| 7 - | Conrod bearing cap |
| q | The conrod bearing cap only fits in one position and only on the appropriate conrod due to the breaking procedure (cracking) separating the cap from the conrod. |
| q | Before removing mark the cylinder assignment -A- |
| q | Fitting position: the marking -B- shows toward the belt pulley (if there is no marking, this must be made before removing) |
| 8 - | Bearing cap |
| q | Do not interchange used bearing shells. |
| q | Insert bearing shells centrally. |
| Check the radial play using a Plastigage: |
| q | New: 0.020 ... 0.060 mm |
| q | Wear limit: 0.090 mm |
| q | When measuring the radial play, do not rotate the crankshaft |
| 9 - | 27 Nm |
| q | Opening pressure of the overpressure valve: 1.8 ... 2.2 bar |
| 10 - | Oil spray jet |
| q | For cooling the piston |
| 11 - | Conrod |
| q | Replace only in sets |
| q | Mark cylinder allocation -A- |
| q | Fitting position: the marking -B- shows toward the belt pulley (if there is no marking, this must be made before removing) |
| q | Piston axial guided |
