Mack E7 Service Manual page 124

5-101.bk Page 34 Friday, March 17, 2006 11:05 AM
INSPECTION
Visually inspect valve seat inserts for looseness,
cracks or other conditions that may result in
improper operation. Replace as necessary.
VALVE SEAT INSERT REMOVAL
Refer to Figure 5-41.
Valve seat extractor kit PT6391 and collet
PT6390-4 are used to remove inlet and exhaust
seat inserts.
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9
1. Grinding wheels
2. T-handle and shaft assembly
3. Collet
4. Allen wrench
5. Lifting bridge
Page 5-34
200 BENCH PROCEDURES
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8
Figure 5-41 — Valve Seat Extractor Kit PT6391
Collet PT6390-4 is not included in basic kit
PT6391.
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3
6. Grinder base
7. Grinder
8. Wrenches
9. Dressing stone
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200298a