PRE-RELEASE
Pistons with connecting rods (in situ)
| Pistons with connecting rods (in situ) |
| To remove |
| 1. |
Remove
Cylinder head (in situ)
.
|
|
| 2. |
Remove
Oil sump (in situ)
.
|
|
| 3. |
Remove the oil suction pipe.
|
|
| 4. |
Note the marking on the connecting rods and bearing caps so that the can be refitted in their original spots. Remove the connecting rod bearing caps. Push the pistons and connecting rods up from the cylinder bore of cylinders 2 and 3.
|
|
| 5. |
Turn the crankshaft 1/2 turn. Note the marking on the connecting rods and bearing caps so that the can be refitted in their original spots. Remove the connecting rod bearing caps. Push the pistons and connecting rods up from the cylinder bore of cylinders 1 and 4.
|
|
| To fit |
| 1. |
Fit the bearing shells in the connecting rod and bearing cap.
|
|
| 2. |
Position the piston rings as illustrated. The piston ring gaps should be spaced 120° from one another.
|
|
| 3. |
Lubricate the cylinder bore and piston with engine oil.
|
|
| 4. |
Press the piston rings together using
83 95 915 Piston ring compressor, universal
. Fit the pistons in cylinders 1 and 4. The recess in the piston should face the piston cooling nozzle.
|
|
| 5. |
Fit the bearing caps. The marking on the bearing caps should face the marking on the connecting rod.
Tightening torque: 25 Nm +60° (18 lbf ft + 60 °) 
|
|
| 6. |
Turn the crankshaft 1/2 rotation.
|
|
| 7. |
Press the piston rings together using
83 95 915 Piston ring compressor, universal
. Fit the pistons in cylinders 2 and 3. The recess in the piston should face the oil spray nozzle.
|
|
| 8. |
Fit the bearing caps. The marking on the bearing caps should face the marking on the connecting rod.
Tightening torque: 25 Nm +60° (18 lbf ft + 60 °) 
|
|
| 9. |
If a piston or connecting rod has been replaced
: Measure piston height. See
Measuring piston height
.
|
|
| 10. |
Fit the oil suction pipe.
|
|
| 11. |
Fit
Oil sump (in situ)
.
|
|
| 12. |
Fit
Cylinder head (in situ)
.
|
|
