Toyota 2GR-FE, Manual

Page: 101 / 1021

EM–100
2GR-FE ENGINE MECHANICAL – ENGINE UNIT
EM
24. REPAIR EXHAUST VALVE SEAT
NOTICE:
•
Repair the seat while checking the seating
position.
• Keep the lip free of foreign matter.
(a) Using a 45
°
cutter, resurface the valve seat so that
the valve seat width is more than the specification.
(b) Using 30
°
and 75
°
cutters, correct the valve seat so
that the valve contacts the entire circumference of
the seat. The contact should be in the center of the
valve seat, and the valve seat width should be
maintained within the specified range around the
entire circumference of the seat.
Width:
1.1 to 1.5 mm (0.043 to 0.059 in.)
(c) Handrub the valve and valve seat with an abrasive
compound.
(d) Check the valve seating position.
25. INSPECT COMPRESSION SPRING
(a) Using vernier calipers, measure the free length of
the compression spring.
Free length:
45.46 mm (1.7898 in.)
If the free length is not as specified, replace the
spring.
(b) Using a steel square, measure the deviation of the
inner compression spring.
Maximum deviation:
1.0 mm (0.039 in.)
Maximum angle (reference):
2
°
If the deviation is greater than the maximum,
replace the spring.
A127140
75°
45°
30°
Width
A124255E01
A109669
Deviation
A094933E01