REP-TAT-P-1111-13 Measuring all cylinders
WARNING: This page is about a different car, the 2018 BMW 340i, 2017 BMW 340i, and 2016 BMW 340i. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The description is for one component only. The procedure is identical for all further components.
Measuring a cylinder
Prerequisite
Cylinder path is cleaned.
Check
- Adjusting measuring screw to nominal dimension of cylinder bore.
TECHNICAL DATA SPECIFICATIONS
| Cylinder bore | |
|---|---|
| Diameter of cylinder bore | 82.007 mm... 82.014 mm |
| Permitted irregularity of the cylinder bore | 0.01 mm |
| Permitted conicity of the cylinder bore | 0.01 mm |
| Permissible total wear tolerance between piston and cylinder bore (engine operated) | 0.15 mm |
- Insert internal measuring device into measuring screw and set to zero.
- With the internal measuring device, measure the cylinder at the following points and check the deviations from the nominal dimension.
- Lower third of the cylinder bore in direction of travel,
- Lower third of the cylinder bore transversely to direction of travel,
- Middle third of the cylinder bore in direction of travel,
- Middle third of the cylinder bore transversely to direction of travel,
- Upper third of the cylinder bore in direction of travel,
- Upper third of the cylinder bore transversely to direction of travel.
TECHNICAL DATA SPECIFICATIONS
| Cylinder bore | |
|---|---|
| Diameter of cylinder bore | 82.007 mm... 82.014 mm |
| Permitted irregularity of the cylinder bore | 0.01 mm |
| Permitted conicity of the cylinder bore | 0.01 mm |
| Permissible total wear tolerance between piston and cylinder bore (engine operated) | 0.15 mm |
Result
» Cylinder does not correspond to the specifications.
Measure
- Replace crankcase.