2. Lay the block with the crankshaft bed up.
3. Remove the main bearing caps, arrange them side by side in a strict order. Do not confuse the covers.
4. Wipe the seats in the shaft bed and bearing caps. The rag for wiping should not give fluff.
Checking clearance in main bearings
5. Wipe the back of the earbuds and place them in the bed and lids, ensuring that the earbud retainers fit into their respective sockets.
Attention: check the co-ownership of the oil holes in the block and the liner. Do not use a hammer or other percussive tool to mount the bushings. The bearing should not be lubricated at this stage.
Pic. 22.5 Make sure that the insert retainer is correctly installed. Check oil hole alignment
6. Install the thrust bearing in the center main bearing cap.
Pic. 22.6a Install the lower half-ring of the axial bearing on the central neck of the shaft with the oil grooves outward. To facilitate their installation in place, scroll the shaft
Pic. 22.6b Axial bearing in the cover of the middle neck. Install oil grooves outward
7. Wipe the crankshaft journals with a lint-free cloth.
8. Check for dirt in the oil channels of the shaft.
9. Carefully put the shaft into the bed. Do not rotate the shaft during the gap measurement procedure.
10. The method for determining bearing clearance is described below.
11. Cut pieces of the plastic gauge slightly shorter than the width of the bearing. Place pieces of gauge on each main journal parallel to the crankshaft axis.
Pic. 22.11 Position of the plastic gauge on the neck to measure the gap
12. Replace the bearing caps. Pay attention to the presence of guide pins. try not to shift calibers.
13. Tighten the main bearing caps, moving from the center to the periphery in three steps to the torque specified in the specification.
14. Release bolts of covers of bearings remove covers. If it is difficult to get the covers out of the bed of the block, you can apply light blows with a soft-surfaced hammer.
15. Measure the gauge width using the scale printed on the package. Compare the obtained data with those recommended in the specification.
Pic. 22.15 Gauge thickness gap measurement. Measure the gap at the widest point. Pay attention to scale (inches or millimeters)
16. If the clearance in the bearing is unsatisfactory, replace the bearing with another of the next size. Recheck your measurements before replacing the earbud (see point 18).
17. Carefully remove any remaining gauges from the neck. Do not damage surfaces.
Final shaft installation
Note: install pistons with connecting rods first (see section 24), then you can install the main bearing caps.
18. Remove the shaft from the engine.
19. Wipe the seating surfaces of the liners, lubricate them and insert the liners into place. Lubricate the bearing surfaces of the bearings. Pay attention to the correct orientation of the thrust bearing.
20. Insert the shaft into the block.
21. Lubricate the bearings in the cap.
22. Establish covers of radical bearings, do not forget about the axial bearing.
Note: Replace the rubber ring in the middle main bearing cap at the oil bridge connection (in engines where available).
23. Tighten the cap bolts by hand.
24. Tighten bolts from center to periphery in three steps to specification.
25. On models with a manual transmission, check the support bearing 8 at the rear of the crankshaft.
26. Scroll the shaft several times by hand.
27. Check end play (see section 13).
28. Install the rear oil seal.