Page 412 - Foton Workshop Manual - Sauvana

12B-122 ENGINE MECHANICAL - VALVE

3. Adjust the valve clearance
(a). Remove camshafts. (Refer to Chapter 12B
Engine Mechanical System-Camshaft,
Replacing)
(b). Take out the valve tappet, which need to
be replaced, with the magnetic bar.
NOTICE:
Adjust the valve clearance, i.e. choose the valve
tappet of different thickness.
(c). Measure the thickness of the top center
of the valve tappet with the spiral
micrometer.

(d). Count the top thickness of the new tappet.
Computing method:
The top thickness of the new mechanical tappet = clearance value measured-
standard clearance value + the top thickness of the valve tappet need to be
replaced
Clearance of the intake valve：0.22~0.28mm
Clearance of the exhaust valve：0.27~0.33mm
(e). Replace the valve stem.

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