Leon Mk1
| Piston and conrod - assembly overview |
| 1 - | Piston rings |
| q | Offset gaps by 120° |
| q | Use piston ring pliers to remove and install |
| q | The mark „TOP“ must face towards piston crown |
| q | Checking ring gap → Fig. |
| q | Checking piston ring side clearance → Fig. |
| 2 - | Piston |
| q | check → Fig. |
| q | Mark installation position and cylinder number. |
| q | Arrow on piston crown points to pulley end |
| q | Install using piston ring clamp |
| 3 - | Piston pin |
| q | If difficult to move, heat piston to 60 °C |
| q | Remove and install with VW 222a |
| 4 - | Circlip |
| 5 - | Conrod |
| q | Renew as set only. |
| q | Mark cylinder number -B- |
| q | Fitting position: The marks -A- should point towards the pulley |
| 6 - | Bearing cap |
| q | Note installation position → Chapter |
| q | Do not interchange used bearing shells. |
| q | Insert bearing shells centrally. |
| q | New axial play: 0.05 - 0.31 mm; Wear limit: 0.37 mm |
| q | Check the radial play using a Plastigage: new: 0,01 ... 0.06 mm; wear out limit: 0.09 mm Do not rotate crankshaft when checking radial clearance. |
| 7 - | cylinder block |
| q | Checking cylinder bore → Fig. |
| q | Piston and cylinder dimensions → Chapter |
| 8 - | Conrod bearing cap |
| q | Note fitting position: |
| q | As the conrod is separated using the breakage procedure, the conrod bearing cap can only be fitted in one position. |
| 9 - | Conrad screw 30 Nm + 90° |
| q | Torx E 10 |
| q | replace |
| q | Oil threads and contact surface. |
| q | To measure radial play, tighten to 30 Nm, without retightening |
