Check the journals (trunnions) of the supports for deviation from the steep shape and for narrowing.
Clamp the crankshaft between two lugs of a turning machine or place it in two prisms and measure the camshaft runout using a dial indicator.
The clearance of the main and connecting rod bearings can be measured using a calibrated plastic feeler gauge. Place the plastic feeler gauge along the entire length of the bearing journal and install the liner together with the bearing cap. Tighten the bearing cap mounting bolts to the required torque.
Disconnect the cover and the insert again and then determine the thickness of the plastic feeler gauge. Before buying new inserts for the main and connecting rod bearings, you need to determine to what extent the main and connecting rod journals of the crankshaft will be ground.
Measure the axial (axial) play of the crankshaft. The measured backlash must be within the correct limits.
The ball bearing for the primary shaft journal of the gearbox must be replaced during engine repair.
The bearing and the plug ring must be pulled out together using a puller and a stop.
Lubricate the new bearing and use a suitable rod to push it onto the crankshaft.
Hammer in the ring plug.
V8 Engine Crankshaft and Related Parts
1. Bolt M18x1.5x45 mm. 2. Flat springs (3 pcs.). 3. Bolt M8x22 mi (6 pcs.). 4. Pulley. 5. Vibration damper. 6. Hub. 7. Crankshaft toothed wheel. 8. Crankshaft. 9. Key. 10. Crankshaft bearing shell in the cylinder block. 11. Crankshaft bearing shell in the bearing cap. 12. Central bearing shell in the cylinder block. 13. Central bearing shell in the bearing cap. 14. Connecting rod bearing shell. 15. Washers, 4.5 Nm thick. 16. Transfer (driven) disk, 1.5 mm thick and 286 mm in diameter. 17. Transfer (slave) disk, 1 mm thick and 287 mm in diameter. 18. Tie bolt for transfer disks M12x1.5x23 mm (8 pieces). 19. Crown with welded steel ring. 20. Central bolts. 21. Spring washer B6. 22. Nut M6.
Flywheel
1. Starter drive ring gear. 2. Flywheel. 3. Dowel pin. 4. Flywheel mounting bolt. 5. Starter drive ring gear. 6. Automatic transmission flywheel. 7. Drive disc. 8. Spacer washer. 9. Dowel pin. 10. Drive disc mounting bolt.
The installation of the flywheel has already been described above. When reusing an old flywheel, the planes should be checked for scratches and wear.
If a new flywheel is installed, it must be the same weight as the old one.
Intermediate flange
If an intermediate flange is installed, it must be centered.
(Material created based on the website mercedesman.ru)
Insert the intermediate flange into the central pins on the cylinder block and lightly tighten the mounting bolts.
Attach the dial indicator to the crankshaft and set its feeler gauge to the outer diameter of the round central part of the intermediate flange.
Turn the crankshaft and measure the highest runout. When turning the crankshaft, make sure that the dial indicator probe does not hang in the recess of the intermediate flange.
Correct the runout by lightly tapping the intermediate flange. If it is too large, remove the intermediate flange, ream both holes for the central pins to a diameter of 12.1 to 12.2 mm, install thicker pins and repeat the measurement.