Inspection; Assembly - Rotax 2005 717 RFI Engine Shop Manual

Section 03 787 RFI ENGINE
Subsection 04 (BOTTOM END)
FIRST PASS
SECOND PASS
Finish the cleaning with acetone.
CAUTION: Be careful not to spray cleaner on
the painted surface of the engine. Do not wipe
with rags. Use a new clean hand towel only.

INSPECTION

Refer to table below to find bottom end dimension
specifications. For measurement procedures, re-
fer to ENGINE MEASUREMENT.
94
MEASUREMENT
Crankshaft
deflection MAG
Crankshaft
deflection CENTER
Crankshaft
deflection PTO
Connecting rod big
end axial play
Crankcase
Inspect plane surfaces for warpage. Small defor-
mation can be corrected by grinding surface with
a fine sandpaper. Install sandpaper on a surface
plate and rub part against oiled sand paper.
Bearing
Inspect crankshaft bearings no. 4. Check for cor-
rosion, scoring, pitting, chipping or other evidence
of wear. Make sure plastic cage is not melted.
Rotate and make sure they turn smoothly.

ASSEMBLY

Assembly is essentially the reverse of disassem-
bly procedures. However pay particular attention
to the following.
NOTE: It is recommended to spray injection oil on
all moving parts when reassembling the engine.
Crankshaft End Bearings
Heat up the bearing(s) using the bearing heater
(P/N 529 035 969). This will expand bearings and
ease installation.
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TOLERANCE
WEAR
NEW PART
LIMIT
mm (in)
N.A. 0.05 (.020)
N.A. 0.08 (.003)
N.A. 0.03 (.001)
min. 0.230 (.008)
1.2 (.047)
max. 0.617 (.024)
smr2005-083