Jacobsen SXG323, Service Manual

Page: 62 / 230

CHAPTER 4. ENGINE
61
4
(4) Then install bearing cap seals (B). Drive them in
until they subside 0 - 0.3 mm (0 - 0.012 in.) from
the cylinder block end. Fill the gaps with sili-
cone compound. Tighten the journal bearing cap
to the specified torque.
Fig. 4-95
3.3.7. INSTALLATION OF PISTON/CON-NECT-
ING-ROD ASSEMBLIES
• Install bearings on the connecting-rod big end
and bearing cap with the bearing projections
seated securely in respective notches in the big
end and bearing cap. Apply engine oil to the
bearing surfaces.
• Clean the cylinder bores and crankshaft, and
apply engine oil to them.
• Set the crankshaft at BDC.
• Turn the front mark on the piston head towards
the front and make sure that the piston ring gaps
are 120
°
apart from each other. Then insert the
piston/connecting rod assembly, compressing the
piston rings with a piston ring compressor, into
the cylinder until the connecting rod bearing
comes into contact with the crankpin.
Fig.4-96
• Install the connecting rod bearing cap having the
same number that the connecting rod has.
Fig. 4-97
• Tighten the connecting rod bearing cap to the
specified torque.
Fig. 4-98
The crankshaft should turn smoothly.
Specified torque: 4.5 - 5.5 kgf ･ m
Specified torque:
2.7 - 3.3 kgf
･
m