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Page 192
REPAIR INSTRUCTIONS
VALVE SEAT INSERT REMOVAL
Valve seat extractor kit PT6391 and collet
PT6390-4 are used to remove the inlet and
exhaust seat inserts. Refer to Figure 192.
Collet PT6390-4 is not included in the basic kit
PT6391.
192
Figure 192 — Valve Seat Extractor Kit PT6391
1. Using depth measurement tool (1), measure
the distance from the cylinder head surface
(2) to the point on insert where the groove
will be ground as shown in Figure 193.
This point should be approximately 0.060 inch
(1.524 mm) below any angular face on the valve
seat insert.
1. Grinding Wheels
2. T-Handle and Shaft Assembly
3. Collet
4. Allen Wrench
5. Lifting Bridge
6. Grinder Base
7. Grinder
8. Wrenches
9. Dressing Stone
5_106_00.bk Page 192 Friday, August 4, 2000 11:17 AM
BDC for engine manuals and specs