ENGINE
.
55
B. REPAIR DATA
VALVE SEAT DIMENSIONS:
VALVE DIMENSIONS (mm)
INLET
EXHAUST
Valve head dia 'A'
29.8
+ 0.1
25.9
+ 0.2
Valve seat angle
45
0
+ 15
45
0
+ 15’
Valve stem dia 'B'
5.973
+ 0.007
5.973
+ 0.007
Maximum run out of valve face with respect to valve stem
0.1
0.1
Valve seat dia. 'C'
27.7
24.5
Valve seat distance from valve face 'D'
2.54
+ 0.08
2.0
+ 0.08
Maximum run out of valve seat with respect to valve stem
0.03
0.03
Distance of valve head from cylinder head mating surface with crank-
case
0.23/-0.18
0.23/-0.18




