5_108.bk Page 157 Thursday, October 4, 2001 11:45 AM
REPAIR INSTRUCTIONS CYLINDER HEAD OVERHAUL Cylinder Heads DESCRIPTION Refer to Figure 202. The cast iron cylinder head is constructed using a special iron alloy. The head contains cored inlet, exhaust and coolant passages, drilled oil
passages, replaceable inlet and exhaust guides and seats, various drilled passages and tapped holes. Each cylinder head covers three cylinders and has two inlet and two exhaust valves per cylinder. Circular grooves correspond with the fire ring bead on cylinder sleeves. This design sets the fire ring over the liner, the lip and into groove of the cylinder head while providing a positive combustion pressure seal. Use a rotary brasswire brush to clean the circular groove. 202
Figure 202 — M-E7 Cylinder Head
SPECIAL TOOLS REQUIRED
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Collet PT6390-4
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Valve Spring Keeper Remover J 29294-B
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Valve Seat Insert Counterbore HT77136
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Fire Ring Groove Cutter J 29600-C
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Valve Insert Installer Set J 38586
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M-E7 Cutter Head J 37719
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Driver Handle J 8092
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Depth Gauge J 26948
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Prussian Blue
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Valve Guide Remover J 37482
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Valve Guide Installer J 37809
Model MST 50 Universal Spring Tester J 22738-02
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Valve Guide Reamer J 37481
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Injection Nozzle Sleeve Extractor J 29880
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Valve Seat Extractor Kit PT6391
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Basic Heavy-Duty Dowelout Kit PT6575
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