A54826
EXAMPLE (Intake):
Measured valve clearance = 0.45 mm (0.0177 in.)
0.45 mm (0.0177 in.)
−
0.25 mm (0.0098 in.) = 0.20 mm (0.0078 in.)
(Measured
−
Specification = Excess clearance)
Used shim measurement = 2.80 mm (0.1102 in.)
0.20 mm (0.0078 in.) + 2.80 mm (0.1102 in.) = 3.00 mm (0.1181 in.)
(Excess cle Used shim = Ideal new shim)
Closest new shim = 3.00 mm (0.1181 in.)
Select No. 21 shim
−
ENGINE MECHANICAL
PARTIAL ENGINE ASSY (1CD
−
FTV)(From September,
2003)
14
−
19
1CD
−
FTV ENGINE REPAIR MANUAL (RM1046E)
(b)
Select the size of an adjusting shim to replace by following
the formula or the charts:
(1)
Using a micrometer, measure the thickness of the
removed shim.
(2)
Calculate the thickness of a new shim so that the
valve clearance comes within the specified value.
HINT:
T ........... Thickness of the removed adjusting shim
A ........... Measured valve clearance
N ........... Thickness of a new adjusting shim
Intake: N = T + (A
−
0.25 mm (0.010 in.))
Exhaust: N = T + (A
−
0.40 mm (0.016 in.))
(3)
Select a new shim with a thickness which is as close
to the calculated value as possible.
HINT:
S
The shims are available in 17 sizes in increments of 0.05
mm (0.0020 in.), from 2.50 mm (0.0984 in.) to 3.30 mm
(0.1299 in.).
S
Refer to New Shim Thickness table on the next 2 pages.
