Inspect And Grind Valves - Toyota 7M-GE Repair Manual

ENGINE MECHANICAL - Cylinder Head
SST
Snap Ring
EM063
82
(f) $u;ily heat the cylinder head to approti;
0 *
(g) Using SST and hammer, drive in a new valve guide
bushing until the snap ring makes contact with the
cylinder head.
SST 09201-70010
Overall Length
II
[r
_-
2606.
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(h) Using a sharp 6 mm (0.23 in.) reamer, ream the valve
guide bushing to obtain standard specified clearance
(See page EM-471 between the.valve guide bushing
and new .valve.
11. INSPECT AND GRIND VALVES
(a) Grind the valve only enough to remove pits and car-
bon.
(b) Check that the valve are ground to the correct valve
face angle.
Valve face angle: 44.5"
(c) Check the valve head margin thickness.
Standard
margin thickness: 1.3 mm (0.051 in.)
Minimum margin thickness: 0.5 mm (0.020 in.)
If the valve head margin thickness is less than minimum,
replace the valve.
(d) Check the valve overall length.
Standard overall length: 98.15 mm (3.8842 in.)
Minimum overall length: 97.75 mm (3.8484 in.1
If the valve overall length is less than minimum, replace
the valve.