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Onan NH User Manual

Onan NH
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INSTALLATION
OF
PISTON
IN
CYLINDER
1.
Turn the crankshaft to position the number one
rod bearing journal at the bottom of its stroke.
2.
Lubricate the number one piston assembly and
the inside of the cylinder. Compress the rings
with a ring compressor as shown in Figure 77.
3.
Position the piston and rod assembly in the cylinder
block. Oil hole in connecting rod must face camshaft.
Rod bolts must be
off-set
toward outside of block.
4.
Tap the piston down into the bore with the handle
end of a hammer until the connecting rod is
seated on the journal (Figure 77). Install the
bearing cap on the rod. Install and tighten the
bolts evenly, in steps, to the specified torques.
The bearing cap must be tapped to align
it
prop-
erly with the rest of the connecting rod. Clear-
ance varies on the journal if this is not done.
5.
Install the remaining piston and rod in the same
manner. Crank the engine over by hand to see
that all bearings are free.
4
6.
Install oil pump pick up tube and cap.
7.
Install the oil base with a new gasket.
8.
Install the cylinder heads. See Cylinder Headsec-
tion for torques and torquing procedure.
9.
Replace oil and break in engine.
OIL
HOLE
cl-1077
FIGURE
77.
INSTALLING PISTON AND CONNECTING ROD
54

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Onan NH Specifications

General IconGeneral
BrandOnan
ModelNH
CategoryEngine
LanguageEnglish

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