BOMBARDIER Johnson 90 Service Manual page 26

GENERAL INFORMATION
SERVICE DATA - 140
ltem Unlt
Data
140
VALVENALVE GUIDE
Valve diameter
IN
mm(ln) 33 (1.2992)
EX mm(ln) 28 (1.1024)
Tappet clearance (Cold
IN
STD mm(in) 0.23 - 0.27 (0.009 - 0.011)
engine condition)
EX
STD mm(in) 0.23 - 0.27 (0.009 - 0.011)
Valve seat angle
IN
-
15°, 45°, 60º
EX
-
15°,45°
Valve guide to valve stem STD mm(in) 0.020- 0.047 (0.0008 - 0.0019)
clearance
IN
Umit mm(in) 0.070 (0.0028)
STD mm(in) 0.045- 0.072 (0.0018-0.0028)
EX
Limit mm (in) 0.090 (0.0035)
Valve guide inside dlameter IN, EX STD mm (in) 6.000 - 6.012 (0.2362 - 0.2367)
Valva guide protrusion IN,EX STO
mm (In) 13.5 (0.5315)
Valve stem outslde diamater IN STO mm(in) 5.965 - 5.980 (0.2348 - 0.2354)
EX
STD mm(in) 5.940- 5.955 (0.2339 - 0.2344)
Valve stem and deflection
IN
Limit mm(in) 0.14 (0.0055)
EX
Limit
mm (In) 0.18 (0.0071)
Valve stam runout
IN,EX
Limit mm (in)
o.os
(0.0020)
Valve head radial runout IN,EX Limit mm (in)
0.08 (0.0031)
Valva head thickness STD mm(in) 1.0 (0.0394)
IN
Limit mm(in) 0.7 (0.0276)
STD
mm(in) 1.20 (0.0472)
EX
Llmlt
mm(in) 0.7 (0.0276)
Valve seat contact width
IN
STD mm (in) 1.1 - 1.3 (0.0433 - 0.0512)
EX
STD mm(in) 1.1 - 1.3 (0.0433 - 0.0512)
Valve spring free length STD mm(in) 42. 73 (1.6823)
Limit mm(in) 41.02 (1.6150)
Valve spring tansion STD N (kg, lb) 164 - 190 (16.7 - 19.3, 36.7 - 42.5) for 32.6 mm (1.28 in.)
Limit N (kg, lb) 151 (15.1, 33.3) for 32.6 mm (1.28 in.)
Valve spring squareness Umit mm(in) 2.0 (0.079)
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