BOMBARDIER Johnson 90 Service Manual page 27

GENERAL INFORMATION
SERVICE DATA - 140
ltem Unit
Data
140
CYLINDER/PISTON/PISTON RING
Cylinder dlstortlon Limit mm (in)
o.os
(0.002)
Piston to cylinder clearance STO mm (In)
0.020 - 0.040 (0.0008 -0.0016)
Limit mm (in)
0.100 (0.0039)
Cylinder bore STO mm(in)
86.000 - 86.020 (3.3858 - 3.3866)
Cylinder measuring position mm(in) 50 (1.969) from cylinder top surface
Piston skirt diameter STO mm(in)
85.970 - 85.990 (3.3846 - 3.3854)
Piston measuring position mm(in)
26.5 (1.043) from piston skirt end.
Cylinder bore wear Limit mm(in)
0.100 (0.0039)
Plston ring end gap STO
mm(in) 0.20 - 0.35 (0.0079 - 0.0138)
1st
Limit mm(in) 0.70 (0.0276)
STO mm(ln) 0.35 -
o.so
(0.0138 - 0.0197)
2nd
Limit mm(in) 1.00 (0.0394)
Piston ring free end gap STO mm(in)
Approx. 11.6 (0.4567)
1st
Limit mm(in)
9.3 (0.3661)
STO
mm (in) Approx. 11.5 (0.4528)
2nd
Limit mm (in)
9.2 (0.3622)
Piston ring to groove STO mm (in) 0.030-0.070 (0.0012-0.0028)
clearance
1st
Limit
mm (in)
0.12 (0.0047)
STO mm (in)
0.020 - 0.060 (0.0008 - 0.0024)
2nd
Umit mm (In) 0.10 (0.0039)
Piston ring groove widlh 1st STO mm (In) 1.22 - 1.24 (0.0480 - 0.0488)
2nd STO mm(ln)
1.51 - 1.53 (0.0594 - 0.0602)
011 STO mm(ln) 2.51 - 2.53 (0.0988 - 0.0996)
Piston ring thickness 1st STO mm (In)
1.17 -1.19 (0.0461 - 0.0469)
2nd
STO mm(ln)
1.47 - 1.49 (0.0579 - 0.0587)
Pin clearance in piston pin hole STO
mm(in) 0.006 - 0.017 (0.0002 - 0.0007)
Limit mm(in) 0.040 (0.0016)
Piston pin outside diameter STO mm (in)
20.997 - 21.000 (0.8267 - 0.8268)
Limit mm(in)
20.980 (0.8260)
Plston pin hole diameter STO
mm(in) 21.006 - 21.014 (0.8270 - 0.8273)
Llmit mm (in)
21.040 (0.8283)
Pin clearance in conrod small end STO mm (in) 0.003 - 0.014 (0.0001 - 0.0006)
Llmit mm (In)
o.os
(0.002)
Conrod small end bore STO
mm(in) 21.003 - 21.011 (0.8269 - 0.8272)
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