KiSC issued 09, 2007 A
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41.7 to 42.2 mm
1.6417 to 1.6614
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41.2 mm
1.6220 in.
t1)
Checking Valve Spring Squareness
1)
Pu t the spring on a su rface plate, place a square on the
side of the spri ng, and check to see if the enti re side is
i
n contact wi th the squ are.
2)
Rotate the spring a nd measu re the maxi mu m B.
3)
The flat su rface at the end of the spri ng coi
l
m ust exce·
ed two-th
i
rds of the f u ll ci rcu mference.
4)
Check al
l
the su rface of the spring for scratches.
5)
I
f the measu rement exceeds the al
l
owa ble
l i
m
i
t, repl ace
the val ve spring.
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(A)
How to measure squareness of the valve spring
B
C
019 F021
52
fj)
Checking Valve Spring Tension
1)
Pl ace the spri ng on a tester, com press
i
t to the level to
wh ich the spri ng is actual
l
y compressed
i
n the engi ne.
2)
R ead the com pression
l
oad on the gauge.
3)
If
the measurement exceeds the a llowa ble
l i
m it, replace
the va
l
ve sp
i
ng.
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117.7 N./35.15 mm
12 kgf./35.15 mm
26.5 lb./1.3839 in.
·----·---l
100.0 N./35.15 mm
10.2 kgf./35.15 mm
22.5 lb./1.3839 in.
C 019 F022
Checking Free Length of Valve Spring
1)
Measu re the spring with a set of vern ier cal
i
ers.
2)
I
f the measu rement exceeds the allowa ble
l i
m
i
t,
replace
the val ve spring.
0 1 9 F01 9
C 01 9 F020
Reference value
1.0 mm
0.0394 in.
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