Mitsubishi S4Q, User Manual

Page: 82 / 174

82 / 174 Service Manual Mitsubishi SQ-Series diesel engines
Version 08/2004
ENGLISH
PISTONS, CONNECTING RODS,
CRANKSHAFT AND CRANKCASE
ENGINE MAIN PARTS
14. Installing connecting rod cap
1) Install the lower half of the connecting rod
bearing in the connecting rod cap. Make sure
the tab on the back of the bearing is in the
notch of the connecting rod cap. Apply engine
oil to the inside of the bearing.
2) Install the connecting rod cap (with the
bearing) to the connecting rod (over the
crankpin) with the matching mark of the cap
on the same side as the mark of the rod.
3) Tighten the connecting rod cap nuts finger
tight.
4) Tighten the connecting rod cap nuts evenly to
the specified torque with a torque wrench.
5) Check the thrust clearance of the connecting
rod big-end. If the thrust clearance is less than
the assembly standard, retighten the cap nuts.
15. Raising crankcase
Raise up the crankcase with the oil pan side up.
Figure 153 Installing connecting rod cap (1)
Apply engine oil
Figure 154 Installing connecting rod cap (2)
Matching marks
NOTE
Steps (a) through (c) are for the installation of the
piston assemblies in the No.1 and No.4 cylinders.
Turn the crankshaft 180° and install the piston
assemblies in the No.2 and No.3 cylinders.
Tightening torque
54 ± 5 N·m
(5.5 ± 0.5 kgf·m)
[40 ± 4 lbf·ft]
Figure 155 Raising crankcase