Daewoo MUSSO Service Manual page 300

Type
Standard Size
E20 : f 89.9
E23 : f 90.9
1st Repair Size
(Standard Size + 0.25)
2nd Repair Size
(Standard Size + 0.5)
1) The group code letters are carved on the surface of the piston crown and in the mating surface of the crankcase.
Service Data Standard
Wear Limit in Longitudinal and Transverse Direction
Permissible Deviation of Cylinder Out-of-round
Permissible Deviation of Rectangular Cylinder Height (Except Chamfered Area)
Basic Peak-to-valley Height After Final Honing and Brushing
Chamfer Angle
Honing Angle
Measurement of Cylinder Bore
1. Clean the cylinder wall.
2. Using a internal diameter gauge, measure the bore size in
axial and transverse direction at three points (1,2,3).
Chamfer Angle
Group Code Letter
1,2,3 Measuring Points
A. Axial Direction
B. Transverse Direction
a. Location of the No.1 Piston Ring at TDC
b. Location of the Piston BDC
c. Location of the Oil Ring at BDC
M161 ENGINE MECHANICAL 1B2-109
1)
A
X
B
A
X
B
A
X
B
When new
Wear limit
Cylinder Bore Size (mm)
f 89.900 - f 90.906
f 89.906 - f 89.912
f 89.912 - f 89.918
f 90.150 - f 90.156
f 89.156 - f 90.162
f 90.162 - f 90.168
f 90.400 - f 90.406
f 90.406 - f 90.412
f 90.412 - f 90.418
0.1 mm
0.007 mm
0.05 mm
0.05 mm
0.003 - 0.006 mm
75°
50° ± 10°