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Просмотр инструкции снегоходы Ski Doo SUMMIT 2005, страница 106
Section 03 ENGINES
Subsection 05 (TOP END)
A02C2EA
TYPICAL
Remove piston from connecting rod.
Install locating sleeve. Then push needle bearings
along with thrust washers and sleeve.
1
A02C2FA
2
TYPICAL
1. Locating sleeve
2. Sleeve
NOTE: 0.25 and 0.5 mm oversized pistons are
available if necessary.
Use a locking tie to fasten all needles and thrust
washers along with locating sleeve.
INSPECTION
NOTE: Refer to table below to find top end en-
gine dimension specifications. For dimension
measurement procedures, refer to ENGINE MEA-
SUREMENT.
TOLERANCES
ENGINE
MEASUREMENT
NEW PARTS
(min.) (max.)
WEAR
LIMIT
Cylinder head volume
377 engine
19.55 cc 21.15 cc N.A.
Cylinder head volume
552 engine
34.34 cc 36.74 cc N.A.
Cylinder head warpage N.A. N.A.
0.5 mm
(.02 in)
Cylinder taper N.A.
0.05 mm
(.002 in)
0.1 mm
(.004 in)
Cylinder out of round N.A.
0.010 mm
(.0004 in)
0.08 mm
(.003 in)
Piston/cylinder
wall clearance
377 engine
0.054 mm
(.002 in)
0.086 mm
(.003 in)
0.20 mm
(.008 in)
Piston/cylinder
wall clearance
552 engine
0.12 mm
(.005 in)
0.17 mm
(.007 in)
0.20 mm
(.008 in)
Ring/piston
groove clearance
377 engine
0.040 mm
(.0016 in)
0.110 mm
(.0043 in)
0.20 mm
(.008 in)
Ring/piston
groove clearance
552 engine
0.037 mm
(.0015 in)
0.077 mm
(.003 in)
0.20 mm
(.008 in)
Ring end gap
377 engine
0.20 mm
(.008 in)
0.35 mm
(.014 in)
1.0 mm
(.039 in)
Ring end gap
552 engine
0.40 mm
(.016 in)
0.55 mm
(.022 in)
1.0 mm
(.039 in)
ASSEMBLY
To ease piston installation, heat piston using bear-
ing heater (P/N 529 035 969).
86 mmr2005-072
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