- 138 -
ID 39.995-40.015
40.05
Curvature -
0.05
Cylindricity 0.006
0.05
Flatness 0.03
0.05
Cylinder
Circular degree
-
0.05
first ring
0.015
-
0.05
0.09
Clearance between piston ring and
ring groove
second
ring
0.015
-
0.05
0.09
first ring
0.1-0.25
0.5
Clearance of the mouth of piston ring
second
ring
0.1-0.25 0.5
OD of piston
39.97-39.99
39.9
Clearance between piston and cylinder
0.005-0.015
0.1
Piston
ring
ID of piston pin hole
12.002-12.008
12.04
OD of piston pin
11.994-12
11.96
Clearance between piston pin hole and piston pin
0.002-0.014
0.02
ID of wrist-pin end of connecting rod
14.016-14.034
14.06
14.2 Failure diagnosis
Low compression pressure white smoke from the vent pipe
wear, burning or snap in the piston wear and damage in the piston ring
wear or damage in the cylinder or the piston wear and damage in the piston or the cylinder
damaged gasket
,
gas leak between the crankcase and the gas
Higher compression pressure abnormal sound from the piston
Excessive carbon deposit in the damage in the cylinder, the piston or
combustion chamber the piston ring
14.3 Cylinder body
14.3.1 Removal of cylinder body
Remove cylinder body after removing cylinder cap.
Cylinder body
Содержание Onyx 50
Страница 2: ...ONYX Service Manual Generic Motor GmbH ...
Страница 8: ... 6 18 5 Solution for idle discharge value exceeding defined value two stroke 169 ...
Страница 16: ... 14 Fig 1 5 Fig 1 6 Fig 1 7 Fig 1 8 Fig 1 9 Fig 1 10 handle Fig 1 11 Fig 1 12 Thickness gauge feeler gauge ...
Страница 21: ... 19 system I D of brake drum rear wheel φ140mm QJ50QT 22D ...
Страница 54: ... 52 ...
Страница 79: ... 77 Bulbs Switches Meters ...
Страница 93: ... 91 Body Panel ...
Страница 105: ... 103 Rear wheel rear suspension ...
Страница 113: ... 111 Fuel tank ...
Страница 126: ... 124 oil pump assembly 机油泵组件 machine oil pump assembly 机油泵组件 ...
Страница 137: ... 135 Cylinder body and piston ...
Страница 145: ... 143 Driving disc clutch driven wheel ...
Страница 152: ... 150 挡圈 retaining ring 摩擦片 abrasion piece ...
Страница 158: ... 156 离合器弹簧压缩器 spring compressor of clutch Decelerator device ...
Страница 172: ... 170 Note 1 test with idle test programme Note2 adjust motor rev with check screw to be qualified and test idle CO HC ...
Страница 173: ...171 ...