140-3 SERIES
15-11
TESTING AND ADJUSTING CYLINDER HEAD
GRINDING VALVE
Special tool
1. Grinding seat face
Grind the seat surface with valve refacer A.
Valve seat angle
Intake valve: 30°
Exhaust valve: 45°
2. Checking after grinding
Measure the thickness of the valve head, protru-
sion of the valve and the contact of the valve
seat face to check that they are within the stan-
dard range.
Thickness of valve head
Intake valve: 2.4 mm
Exhaust valve: 2 mm
Insertion depth of valve (Standard):
0 ± 0.1 mm
Contact width of valve (Standard):
Intake valve: 4.33 mm
Exhaust valve: 3.47 mm
No. Part No. Part Name Q’ty
A Commercially available Valve refacer 1
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