Measuring Crankshaft Opel Combo C

Note. Dismantle engine

Install

1. 1. Insert 10 crankshaft bearing shells • Observe installation position and allocations • Note position of axial bearing • In cylinder block, crankshaft bearing cap
2. 2. Insert crankshaft • In cylinder block • Insert 2 thrust rings

Note. Oil grooves face outward

3. 3. Attach 5 crankshaft bearing covers • Pay attention to identification, allocation and tightening order. Arrows point toward engine control side. • Tighten 10 bolts – Tightening torque 88.2 Nm

Note. Bolts do not have to be replaced when checking crankshaft alignment

4. 4. Attach MKM-571-B • Install MKM-571-B in bracket • Fit bracket to transmission side of cylinder block

Measure

5. 5. Adjust MKM-571-B • Attach probe to crankshaft flange • Attach MKM-571-B under pre-tension • Set MKM-571-B to "0"
6. 6. Measure crankshaft end play • Move crankshaft • Read off test value

Note. Repeat measurement several times. For permitted crankshaft end play see "Technical Data - crank drive, cylinder block"

7. 7. Detach MKM-571-B
8. 8. Remove 5 crankshaft bearing covers • Slacken in depicted order • Unscrew 10 bolts

9. 9. Attach MKM-571-B • Attach to cylinder block with bracket

10. 10. Adjust MKM-571-B • Place probe against crankshaft bearing journal • Attach MKM-571-B under pre-tension • Set MKM-571-B to "0"
11. 11. Measure crankshaft concentricity deviation • Turn crankshaft evenly • Read off test value

Note. For permitted crankshaft concentricity deviation see "Technical Data - Crank Drive, Cylinder Block"

12. 12. Detach MKM-571-B
13. 13. Remove crankshaft • Remove 2 thrust rings
14. 14. Measure diameter of 5 crankshaft bearing journals • Measure in 2 places (I + II) per bearing using micrometer gauge

Note. Note dimensions - if a dimension is outside the permitted tolerance, the crankshaft must be ground or replaced.

15. 15. Attach 5 crankshaft bearing covers • Pay attention to identification and allocation. Arrows point to engine control side • Tighten 10 bolts – Tightening torque 88.2 Nm

Note. Bolts do not have to be replaced when checking crankshaft alignment

16. 16. Set up internal measuring instrument • Fit appropriate probe tip to internal measuring instrument – Fit MKM-571-B to internal measuring instrument with approx. 1 mm of pre-tension • Slide internal measuring instrument between micrometer gauge test surfaces • Determine indicator turning point – Oscillate internal measuring instrument between test surfaces – Set MKM-571-B to "0" at turning point

17. 17. Measure diameter of 10 crankshaft bearing holes • Determine turning point 2 places (I + II) per bearing – Oscillate internal measuring instrument in crankshaft bearing hole • Note down the dimensions

18. 18. Calculate crankshaft bearing play (5 times) • When selecting main bearing shells the following must be taken into consideration: The main bearing shells are divided into three classes. The class depends on the bore diameter for the main bearing shells in the cylinder block and is identified by a number per main bearing shell in the cylinder block, see F4489 above. The inner diameter of the main bearing shells depends on the outer diameter of the main bearing journals. Depending on the diameter, the crankshaft cheeks are marked with "-" or "- -". The numbers (1 to 5) relate to the respective main bearing journals. The (1) relates to the left-hand main bearing journals shown at the bottom of figure F4489, and the others relate to the right-hand main bearing journals. Bearing shells with appropriate play can be selected using these identifiers - see "Technical Data".

Note. The crankshaft bearing play is calculated on the basis of the difference between the crankshaft bearing bore and crankshaft bearing journal diameters. For permitted crankshaft bearing play see "Technical Data - crank drive, cylinder block"

19. 19. Remove 5 crankshaft bearing covers • Unscrew 10 bolts
20. 20. Remove 10 crankshaft bearing shells
21. 21. Measure diameter of 4 con-rod journals • Measure in 2 places (I, II) using micrometer gauge

Note. Note dimensions - if a dimension is outside the permitted tolerance, the crankshaft must be ground or replaced.

22. 22. Insert 8 con-rod bearing shells • Observe installation position and allocations • In con-rod, con-rod bearing cap
23. 23. Attach 4 con-rod bearing caps • Pay attention to identification (arrows) and allocation • Tighten 8 nuts – Tightening torque 24.5 Nm + 100°+ 15°

Note. Nuts do not have to be replaced when measuring con-rod bearing play

24. 24. Reconfigure internal measuring instrument • Remove probe tip • Fit appropriate probe tip to internal measuring instrument – Fit MKM-571-B to internal measuring instrument with approx. 1 mm of pre-tension • Slide internal measuring instrument between micrometer gauge test surfaces • Determine indicator turning point – Oscillate internal measuring instrument between test surfaces – Set MKM-571-B to "0" at turning point
25. 25. Measure diameter of 4 con-rod bearing holes • Determine turning point in 2 places (I, II) – Oscillate internal probe in con-rod bearing hole • Note down the dimensions

26. 26. Calculate con-rod bearing play (4 times)

Note. The con-rod bearing play is calculated on the basis of the difference between the con-rod bearing bore and con-rod bearing journal diameters. For permitted con-rod bearing play see "Technical Data - crank drive, cylinder block"

Remove

27. 27. Remove 4 con-rod bearing caps • Unscrew 8 nuts
28. 28. Remove 8 con-rod bearing shells
29. 29. Dismantle internal measuring instrument