Suzuki VL800 Service Manual page 65

3-26 ENGINE
VALVE STEM RUNOUT
Support the valve with "V" blocks, as shown, and check its runout
with a dial gauge.
The valve must be replaced if the runout exceeds the limit.
" Valve stem runout
Service Limit: 0.05 mm (0.002 in)
% 09900-20701: Magnetic stand
09900-20606: Dial gauge (1/100 mm)
09900-21304: V-block
VALVE HEAD RADIAL RUNOUT
Place the dial gauge at right angles to the valve head face, and
measure the valve head radial runout.
If it measures more than limit, replace the valve.
" Valve head radial runout
Service Limit: 0.03 mm (0.001 in)
% 09900-20701: Magnetic stand
09900-20606: Dial gauge (1/100 mm)
09900-21304: V-block
VALVE STEM DEFLECTION
Lift the valve about 10 mm (0.39 in) from the valve seat. Measure
the valve stem deflection in two directions, "X" and "Y", perpen
dicular to each other, by positioning the dial gauge as shown. If
the deflection measured exceeds the limit, (see below) then de-
termine whether the valve or the guide should be replaced with a
new one.
" Valve stem deflection (IN & EX)
Service Limit: 0.35 mm (0.14 in)
% 09900-20606: Dial gauge (1/100 mm)
09900-20701: Magnetic stand
VALVE STEM WEAR
If the valve stem is worn down to the limit, as measured with a
micrometer, where the clearance s found to be in excess of the
limit indicated replace the valve if the stem is within the limit,
then replace the guide. After replacing valve or guide, be sure to
re-check the clearance.
" Valve stem O.D.
Standard (IN) : 5.475 – 5.490 mm (0.2156 – 0.2161 in)
(EX) : 5.455 – 5.470 mm (0.2148 – 0.2154 in)
% 09900-20205: Micrometer (0 – 25 mm)