Ski-Doo Summit 583 1998 - Connecting Rod Big End Axial Play; Crankshaft Deflection

Section 04 ENGINE
Subsection 04 (LEAK TEST AND ENGINE DIMENSION MEASUREMENT)
04-04-10
1. Transfer port
2. Intake port
CRANKSHAFT DEFLECTION
Crankshaft deflection is measured with a dial indi-
cator.
Measuring (in engine)
First, check deflection with crankshaft in engine.
If deflection exceeds the specified tolerance, re-
check deflection using V-shaped blocks to deter-
mine the defective part(s). See below.
Measuring (on bench)
Once engine is disassembled, check crankshaft
deflection on V-shaped blocks. If deflection ex-
ceeds 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.
TYPICAL
1. Measure at mid point between the key and the first thread
A. See table below
Crankshaft Deflection on PTO Side
Crankshaft Deflection on MAG Side
Crankshaft Deflection in Center of
Crankshaft
NOTE:
Crankshaft deflection cannot be correctly
measured between centers of a lathe.
If the deflection exceeds the specified tolerance,
crankshaft should be repaired or replaced.
CONNECTING ROD BIG END
AXIAL PLAY
Using a feeler gauge, measure distance between
thrust washer and crankshaft counterweight. If
the distance exceeds specified tolerance, repair or
replace the crankshaft.
A01C0QA
2
1
A
A01C0RA
1
ENGINE
TYPE
DISTANCE A
mm (in)
MAXIMUM ON PTO SIDE
mm (in)
443 75.5 (2.972) 0.05 (.002)
494 and
583
86 (3.386)
0.06 (.002)
503 82.5 (3.248)
670 100 (3.937)
ENGINE TYPE
MAXIMUM ON MAG SIDE
mm (in)
All 0.03 (.001)
ENGINE TYPE
MAXIMUM IN CENTER
OF CRANKSHAFT
All 0.08 mm (.0031 in)
ENGINE
TYPE
NEW PARTS
MIN. — MAX.
WEAR
LIMIT
443 and 503
0.20 - 0.53 mm
(.008 - .021 in)
1.00 mm
(.039 in)
494, 583
and 670
0.40 - 0.75 mm
(.016 - .029 in)
1.20 mm
(.047 in)