——Tighten four M6 bolts to
8.0 —11.0Nm。
——Remove the plastic piece.
【11】. Removal and installation
crankshaft, crankshaft thrust washer, halves and main bearing cap
Removal:
——Before removing, check the end play of crankshaft first.
Use the plunger of dial indicator to contact bearing face of the crankshaft
(lightly compressing).
Push the crankshaft away from the contacting tip. Adjust dial
indicator to zero and then use post to push the crankshaft towards
contacting tip as much as possible. Check dial indicator. The reading is
end play. The end play of the crankshaft should be 0.092—0.303mm.
If dial indicator is not available, the end play of the crankshaft
may be checked by feeler leaf. Between the third main bearing cap and
crankshaft, it should be checked by feeler leaf (push and pull
crankshaft)。
——Loosen main bearing bolt and stud,(start with the middle bearing
cap), take out the bolt and stud, remove main bearing cap and the other
shell of main bearing bushings. The other shell of main bearing bushing
is still kept in main bearing cap.
——Remove the crankshaft.
——Remove the thrust plates of crankshaft (two pieces) from the
cylinder block.
Check:
——Check main journal and main bearing bushing clearance.
Clean the main journal of crankshaft, inner bore of main bearing
cap and main bearing bushings with non-woven. Put plastic
clearance gauge on the main journal paralleling with the generatrix of
main journal. Its length should be a little shorter than the width of main
journal.
Note: Don’t rotate the crankshaft!
Mount the main bearing cap. Screw the bolt of main bearing cap
by hand. Tighten to 90—100Nm. Don't rotate the crankshaft.
Remove main bearing bolt. Take out the main bearing cap
Fig.63
Fig. 64
Sealing plate
M6 bolt×20(4)
Tighten torque 8~11Nm
Fig.62