Yuchai YC4D60-D21 - Page 13

13
9
Camshaft bearing
bore in cylinder block
/camshaft bearing
bush
Φ62
03.0
0

/Φ62
106.0
087.0


interference
0.057～0.106
10
Camshaft bearing
bush/camshaft
journal
Φ58.5
03.0
0

/Φ58.5
03.0
06.0


radial
clearance
0.03～0.09
11
Timing idle gear
bush/idle gear shaft
Φ55.5
03.0
0

/Φ55.5
03.0
06.0


radial
clearance
0.03～0.09
12
Timing idle gear/idle
gear shaft
28
0
08.0
/28
17.0
07.0


axial
clearance
0.07～0.25
13
Top ring groove
height/top gas ring
height
2.695±0.015 / 2.605
01.0
03.0


axial
clearance
0.085～0.135
14
Second ring groove
height/second gas
ring height
2.5
10.0
08.0


/2.5
010.0
025.0


axial
clearance
0.09～0.125
15
Oil ring groove height
/oil ring height
3.5
04.0
02.0


/3.5
010.0
025.0


axial
clearance
0.030～0.065
16
Connecting rod
bearing (with
shell)/crankpin
Φ66
089.0
040.0


/Φ66
0
019.0
radial
clearance
0.040～0.108
17
Connecting rod
bush/piston pin
Φ38
036.0
025.0


/Φ38
0
011.0
radial
clearance
0.025～0.047