Mitsubishi S3Q2 Service Manual page 167

ENGINE INSPECTION RECORD SHEET
Customer
Measurement of Valve Sinkage, Seat Width and Valve
Inspection
Item
Margin
Measuring positions
Seat width
Valve margin
Valve seat
Valve sinkage
angle
Measured values
Name
Valve seat angle
Valve
No.
①
Inlet
1
②
Exhaust
①
Inlet
2
②
Exhaust
①
Inlet
3
②
Exhaust
Model
Engine Serial No.
Standards
Valve seat
angle
Seat width
Valve
sinkage
Valve margin
Seat width Valve sinkage
S3Q2,S3Q2-T
Date
Unit
Nominal
Standard
value
30°
1.04 to 1.32
1.18
[0.0409 to
[0.0465]
0.0520]
0.7 to 0.9
0.8
[0.028 to
[0.031]
0.035]
1.7
permissible up
[0.067]
Valve margin
Approved by Examined by
No.3
mm [in.]
Limit
1.6
[0.063]
1.3
[0.051]
Refacing
to
1.2 [0.047]
Measured by