ENGINE MECHANICAL (J05E)
10–42
(2)
Use the cylinder gauge to measure the inner diameter of the valve
guide.
(3)
Calculate the difference between the outer diameter of the valve
stem and the inner diameter of the valve guide. If a measurement
reading exceeds the standard value, replace the valve and valve
guide.
ASSEMBLING THE VALVE SYSTEM
1.
MOUNTING THE VALVE SEAT
(1)
Remove the welding spatter or dirt on the valve seat surface.
(2)
Heat the cylinder head in hot water to about 80°C-100°C {176°F -
212°F}. Tap in the cooled valve seat to the cylinder head mount-
ing area using the dolly block and hammer.
! CAUTION
•
Make sure of orientation (face side and back side) of a valve
seat.
•
Be careful not to break the valve seat because it is sintered
part.
NOTICE
The valve seat with an outer diameter of 41 mm {1.614 in.} is for
intake and 39 mm {1.535 in.} for exhaust.
SHTS021270900089
Measured item
Standard value
(mm {in.})
Intake valve guide
7 {0.276}
Exhaust valve guide
7 {0.276}
Measured item
Standard value (mm {in.})
Intake valve oil clearance
0.023-0.058
{0.0009-00023}
Exhaust valve oil clearance
0.050-0.083
{0.0020-0.0033}
VALVE SEAT
DOLLY BLOCK
SHTS021270900090
CYLINDER BLOCK SIDE
FOR INTAKE
VALVE SEAT
VALVE SEAT
FOR EXHAUST
SHTS021270900091
