ENGINE MECHANICAL (C22NE, 22LE, 20LE) 6A-47
Valve Seating, Mill
Place cylinder head on block of wood.
Inlet and exhaust, Guide Drift and Valve Seat Cutter 5-8840-
2593-0.
Valve seat-45°, side face, upper correction-30°, side face
(arrows on cutter).
Valve seat width:
Inlet-1.0 to 1.5 mm/0.04 to 0.06 in.
Exhaust-1.7 to 2.2 mm/0.072 to 0.088 in.
Inspection
Valve stem projection-use 5-8840-2596-0.
Important
If dimension “A” is exceeded, use new valves.
Check valve stem projection again. If dimension “A” is
exceeded, replace cylinder head.
Cylinder Head, Overhaul
Cylinder head disassembled.
Valve, Grind
Important!
Ensure that there are no crater-like burns on the valve cone.
Regrinding possible once or twice.
Grinding of valve stem end is not permitted.
Angle at valve head-44°
Inspection
Check valve stem projection as shown 5-8840-2596-0
Valve, Grind in
Lubricate valve stem, use fine-graining grinding paste.
Lift up valve from seat rythmically using valve grinding tool (1)-
for distribution of grinding paste.
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