Removing cylinder
Remove cylinder.
Separate the cylinder base from the engine block.
Caution! When removing cylinder, make sure that the piston does not strike the engine block.
Checking cylinder
![](https://motoinstruction.ru/img/bmw/10/116797.jpg)
Check cylinder face and sealing faces for damage and blow out oil ducts for chain tensioner.
![](https://motoinstruction.ru/img/bmw/10/116798.jpg)
Measure cylinder bore at 55...65 mm (2.17...2.56 in) from the upper edge with an internal micrometer at three points (1, 2, 3).
Wear limits for cylinder bore:
- Cylinder A: max. 100.03 mm (3.9382 in)
- Cylinder B: max. 100.04 mm (3.9387 in)