3-7. CYLINDER HEAD ASSEMBLY REPLACEMENT/REPAIR (CONT)
Grind intake and exhaust valves (8
Grind valves to proper face angle.
Valve Face Angle
Measure valve rim thickness.
Minimum (A): 0.031 in.
If rim thickness is less than
0.031 in. (0.79 mm)
after grinding, replace valve.
Tag and mark valves again
respective to their location in
Machine valve guide bores.
If valve guide bores are scratched, scored,
burned, or worn, the guide bores must be
machined and service valve guides
To install service valve guides
3906206 (thin wall intake and
exhaust guides), machine cylinder
head parent metal valve guide bores
(B) to 0.4375 - 0.4385 in. dia (11.11 -