EasyManuals Logo
Home>Onan>Engine>NH

Onan NH User Manual

Onan NH
64 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #48 background imageLoading...
Page #48 background image
HESE MARKS MUST
ALIGN WHEN INSTALL-
ING TIMING GEARS.
FIGURE
62.
TIMING GEAR REMOVAL AND INSTALLATION
PISTONS
AND
CONNECTING
RODS
Observe the following procedure when removing pis-
tons and connecting rods from the engine.
1.
2.
3.
Drain oil.
Remove the cylinder head and oil base pan from the
engine.
Remove carbon from top of cylinder boreand check
for a ridge. Remove ridge (Figure 63) with a ridge
reamer before attempting piston removal.
ACAUT~ON
Using a ridge reamer
to
remove
carbon can cause damage
to
cylinder bore.
5.
push the rod and piston assembly out through the
top of the cylinder, using a hammer handle. Avoid
scratching the crankpin and cylinder wall when
removing the piston and rod.
Mark each piston and rod assembly
so
they can be
returned to their respective cylinders after overhaul.
Keep connecting rod beairng caps with their
respective rods.
Remove the piston rings from the piston with a
piston ring spreader asshown in Figure64. Remove
the piston pin retainer and push the piston pin out.
4.
FIGURE
63.
REMOVING RIDGE FROM CYLINDER
Forcing fhe pisfon from fhe
cylinder before reaming may
cause damage
to
fhe piston lands and break
rings.
Turn the crankshaft until the piston is at the bot-
tom
of
its stroke, and remove the connecting rod
nuts. Lift the rod bearing cap from the rod, and
I
i
\
/
FIGURE
64.
REMOVING PISTON RINGS
a
46

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Onan NH and is the answer not in the manual?

Onan NH Specifications

General IconGeneral
BrandOnan
ModelNH
CategoryEngine
LanguageEnglish

Related product manuals