TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 2 Download
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15-5. RIGHT CYLINDER HEAD REPAIR This task covers: a. Removal c. Installation b. Repair a. Removal CAUTION Cover or plug all hoses, connections, and openings immediately after disconnection to prevent contamination. Remove all covers or plugs prior to connection. 1. Remove cold-advance switch (2) from cylinder head (1). 2. Remove seventeen capscrews (3) from cylinder head (1) and cylinder block (5). 3. Remove cylinder head (1) and gasket (6) from cylinder block (5). Discard gasket (6). 4. For cylinder head (1) and valve repair procedures, notify general support (TM 9-2815-237-34). INITIAL SETUP: Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) Materials/Parts Gasket (Appendix G, Item 74) Pipe sealing compound (Appendix C, Item 62) Personnel Required One mechanic One assistant Manual References TM 9-2350-387-24P TM 9-2815-237-34 Equipment Condition • Right exhaust manifold removed (para. 3-57). • Water crossover removed (para. 3-79). • Right intake manifold removed (para. 15-17). • Rocker arm shafts and pushrods removed (para. 15-8). • Fuel injection return hoses removed (para. 3-37). • Fuel injection nozzles removed (para. 16-3). • Glow plugs removed (para. 3-39). General Safety Instructions Cylinder head must be supported during removal and installation. Maintenance Level Direct support TM 9-2320-387-24-2 15-12 Change 1 b. Repair Refer to para. 15-4, task b., for extraction of broken bolts. c. Installation CAUTION Head gasket must be used without a sealer. Sealant may cause leaks or damage to engine. 1. Install head gasket (6) over dowel pins (4) on cylinder block (5). 2. Apply pipe sealing compound to threads and under heads of seventeen capscrews (3). CAUTION Failure to tighten cylinder head capscrews in proper torque sequence may result in leaks or damage to cylinder head. WARNING Cylinder head must be supported during removal and installation. Failure to support cylinder head may cause injury to personnel or damage to equipment.