5-101.bk Page 30 Friday, March 17, 2006 11:05 AM Refer to Figure 5-33. [213 EP] Valve Guides 6. Install a socket (1) and T-handle (2) on cutter head (3). Using T-handle, rotate cutter head in a clockwise direction only, applying an even downward pressure to cut fire ring groove. INLET AND EXHAUST VALVE GUIDE DIMENSIONS Refer to Figure 5-34.
Valve guide ID (3) — 3/8 inch (9.53 mm) 2 Top end of guide to valve spring seat (4) — 0.959 ± 0.040 inch (24.36 ± 1.02 mm) Valve guide extension, fire deck to top of guide (5) — 5.24 ± 0.03 inch (133.10 ± 0.76 mm) 1 Valve guide bore in head (6) — 0.687– 0.686 inch (17.450–17.424 mm) Valve guide OD (7) — 0.6886–0.6881 inch (17.4904–17.4777 mm) 1 2 3 4 3 200292a Figure 5-33 — Cutting Ring Groove 5 7. After groove is cut, remove cutter head and cutter base from cylinder head. 8. Use a honing stone to remove any burrs around fire ring groove. 9. Check fire ring groove depth with depth gauge J 26948 to verify that groove depth meets specification.
If groove depth does not meet specification, recut as necessary. 10. Repeat above procedure with each fire ring groove cut. 6 7 200293a Figure 5-34 — Valve Guide Dimensions To ensure proper groove depth, always adjust cutting tool height when cutting next groove. Page 5-30 200 BENCH PROCEDURES 1. Socket 2. T-handle 3. Cutter head (J 37719) 1. Exhaust valve guide 2. Inlet valve guide 3. Valve guide ID 4. Top end of guide to valve spring seat 5. Valve guide extension, fire deck to top of guide 6. Valve guide bore in head 7. Valve guide OD