Page 334 - Foton Workshop Manual - Sauvana

12B-44 ENGINE MECHANICAL - ENGINE ASSEMBLY

(i). According to the sequence of bearing
seat3、2、4、1、5、rom middle to sides,
alternately tighten the bolt of each bearing
seat by 3 steps.
Step 1: Tighten with the torque of30N•m
Step 2: Loosen60°
Step 3: Perform a comprehensive retighten
with the anchoring force value of 78N•m
NOTICE:
• After assembly, the crankshaft rotational torque
shall be not more than10N•m.
• After installation, check whether the axial
clearance of the crankshaft fits.
• After installing each main bearing cap, the
crankshaft shall rotate freely when rotated. If
there is an out of nimbleness symptom, you
shall check and re-install it.

4. Install the piston and connecting rod
assembly
(a). Install the upper bearing shell of connecting
rod.
NOTICE:
• Ensure that the location tongue of main bearing
shell aligns at the groove-and-tongue on
connecting rod in installation.
• Ensure that reverse side of connecting rod and
connecting rod bearing shell is clean and free of
any foreign matter.
• It is prohibited to lubricate the reverse side of
connecting rod bearing shell.
(b). Apply a layer of clean engine oil to cylinder
wall and piston surface.

Page 334