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Просмотр инструкции снегоходы Ski Doo SUMMIT 2005, страница 991
Section 03 ENGINES (2-STROKE)
Subsection 04 (LEAK TEST AND ENGINE DIMENSION MEASUREMENT)
RING/PISTON GROOVE
CLEARANCE
Using a feeler gauge check clearance between up-
per compression ring and groove. Replace piston
if clearance exceeds specified tolerance. Refer to
TECHNICAL DATA.
A01C0PA
RING END GAP
Position ring halfway between transfer port and
intake port.
NOTE: In order to correctly position the ring in the
cylinder, use piston as a pusher.
Using a feeler gauge, check ring end gap. Replace
ring if gap exceeds specified tolerance. Refer to
TECHNICAL DATA.
A01C0QA
2
1
1. Transfer port
2. Intake port
CRANKSHAFT DEFLECTION
Crankshaft deflection is measured with a dial indi-
cator (P/N 414 104 700).
Measuring (in crankcase)
First, check deflection with crankshaft in engine.
If deflection exceeds the specified tolerance,
recheck deflection using V-shaped blocks to de-
termine the defective part(s). See below.
Measuring (on bench)
Once engine is disassembled, check crankshaft
deflection on V-shaped blocks. If deflection
exceeds the specified tolerance, it can be worn
bearings or a bent crankshaft. Remove crankshaft
bearings and check deflection again on V-shaped
blocks to determine the defective part(s). See
measurement A in following illustration.
A01C0RD
1
A
TYPICAL
1. Measure at mid point between the key and the first thread
A. 3mm(1/8in)
Crankshaft Deflection on PTO Side
ENGINE TYPE
MAXIMUM ON PTO SIDE
mm (in)
All 0.06 (.0024)
Crankshaft Deflection on MAG Side
ENGINE TYPE
MAXIMUM ON MAG SIDE
mm (in)
277, 443 and
552
0.03 (.0012)
593/593 HO SDI
0.05 (.0020)
118 mmr2005-013
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