Jabiru 2200, Overhaul Manual, Page: 112 / 201

Engine Overhaul Manual Jabiru Aircraft
Pty Ltd
JEM0001-7 Jabiru 2200 & 3300 Aircraft Engines
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ISSUE 1 2 3 4 5 6 7 Dated : 28/10/2014 Issued By: AS Page: 112 of 201
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Figure 137
– Compression Ring Cross Section

Fit the rings to the piston.

The “square” compression ring goes into the groove closest to the piston crown. The compression ring
with the cut-out section fits in the next groove down (see Figure 137).

Some compression rings are marked with a dot or an “R”. Compression rings with either of these
markings must be fitted with the marking pointing towards the piston crown.

Check the fit of the compression rings to the piston. Ensure ring sliding clearance is within the limits
given in Table 12.

Note that the oil rings must be fitted so that the scraper ring ends (i.e. the join in the upper scraper ring
is not in line with the join in the lower scraper ring) are separated and the expander has not overlapped
itself.

Fit the gudgeon pin to the piston on the side where the circlip has not been fitted.
“Cut Out” Ring #2
“Square” ring #1