Page 238
REPAIR INSTRUCTIONS, PART 1
254
Figure 254 — Ring Groove Cutting
7. After the groove is cut, remove the cutter
head and base from the cylinder head.
8. Use a honing stone to remove any burrs
around the fire ring groove.
9. Check the fire ring groove depth with depth
gauge J 26948 to verify that the groove
depth meets specification. If the groove
depth does not meet specification, recut as
necessary.
10. Repeat the above procedure to cut the
remaining fire ring grooves.
To ensure proper groove depth, always adjust the
cutting tool height when cutting the next groove.
Valve Guide Replacement
[213 EP]
INLET AND EXHAUST VALVE GUIDE
DIMENSIONS
Refer to Figure 255.
앫 Valve guide ID (3) — 0.3750 ± 0.0005 inch
(9.53 ± 0.012 mm)
앫 Top end of guide to valve spring seat (4) —
0.857–0.937 inch (21.768–23.710 mm)
앫 Valve guide extension, fire deck to top of
guide (5) — 5.178 ± 0.030 inch
(131.52 ± 0.762 mm)
앫 Valve guide bore in head (6) —
0.687–0.686 inch (17.450–17.424 mm)
앫 Valve guide OD (7) — 0.6886–0.6881 inch
(17.4904–17.4777 mm)
1. Socket
2. T-Handle
3. Cutter Head (J 37719)
5-111.bk Page 238 Monday, July 10, 2006 2:26 PM
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