Onan NHM Series User Manual

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sharp point (Figure 9-22). Take care not tore-
move metal from the groove sides.
CT1061s
FIGURE 9-23. CHECKING RING LAND
Improper ring width or excessive ring side clear-
cnOGOs ance can result in ring breakage. New rings in worn
ring grooves do not make adequate contact with
the cylinder wall (Figure 9-24).
FIGURE 9-22. CLEANING RING GROOVES
lA CAUTION! Using a caustic cleaning solvent or
wire brush for cleaning pistons will cause pis-
ton damage. Use only parts cleaning solvent
for this job. Make certain to follow the solvent
manufacturer's Instructions.
When cleaning the connecting rods in solvent,
make certain to include the rod bore.
Piston and Connecting
Rod Inspection Procedure
Piston Inspection: Inspect the pistons for frac-
tures at the ring lands, skirts and pin bosses.
Check for wear
at the ring lands, using a new ring
and feeler gauge, as shown in Figure 9-23. Re-
place the piston if the side clearance of the top com-
pression ring is as much as 0.008 inch (0.20 mm).
9-14
CYUNDER
WALL
FIGURE 9G24. NEW RING IN
WORN RING GROOVE
CT1062s

Onan NHM Series Specifications

General

Brand	Onan
Model	NHM Series
Category	Inverter
Language	English