Daedong DSC48, Workshop Manual

Page: 101 / 290

Apr. 2007
2
-25
DSC48
I. TIMING GEAR
Item Factory speci fi cation Allowable limit
Timing gear backlash 0.04 ~ 0.11 mm
0.016 ~ 0.0043 in.
0.15 mm
0.0059 in.
Idle gear side clearance 0.20 ~ 0.51 mm
0.0079 ~ 0.0201 in.
0.9 mm
0.035 in.
Clearance between idle gear shaft and idle gear bushing 0.025 ~ 0.066 mm
0.00098 ~ 0.00260 in.
0.1 mm
0.0049 in.
Idle gear shaft O.D. 37.959 ~ 37.975 mm
1.49445 ~ 1.49508 in.
-
Idle gear bushing I.D. 38.000 ~ 38.025 mm
1.49606 ~ 1.49705 in.
-
J. PISTON - PISTON RING
Item Factory speci fi cation Allowable limit
Piston pin bore I.D. 25.000 ~ 25.006 mm
0.98425 ~ 0.98448 in.
25.03 mm
0.9854 in.
Clearance between 2nd ring and ring groove 0.04 ~ 0.08 mm
0.00157 ~ 0.00315 in.
0.15 mm
0.00591 in.
2nd ring groove width 2.03 ~ 2.05 mm
0.07992 ~ 0.08070 in.
-
2nd ring width 1.97 ~ 1.99 mm
0.07756 ~ 0.07835 in.
-
Clearance between oil ring and ring groove 0.02 ~ 0.06 mm
0.00079 ~ 0.00237 in.
0.15 mm
0.00591 in.
Oil ring groove width 3.01 ~ 3.03 mm
0.119 ~ 0.119 in.
-
Oil ring width 2.97 ~ 2.99 mm
0.07756 ~ 0.07834 in.
-
Top ring end gap 0.15 ~ 0.30 mm
0.0059 ~ 0.0181 in.
1.25 mm
0.0492 in.
2nd ring end gap 0.25 ~ 0.40 mm
0.0098 ~ 0.07834 in.
1.25 mm
0.0492 in.
Oil ring end gap 0.25 ~ 0.40 mm
0.0098 ~ 0.07834 in.
1.25 mm
0.0492 in.