TM-9-2815-237-34 HMMWV Engine Direct Support & General Support Maintenance Manual Download
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TM 9-2815-237-34 Change 2 2-173 2-41. ENGINE ASSEMBLY FROM SUBASSEMBLIES (Cont’d) o. Cylinder Heads CAUTION Head gasket must be used without sealer. Additional sealant may cause leaks or damage to engine. 1. Install head gasket (11) over dowel pins (12) on cylinder block (7). NOTE Use of cylinder head lifting device is optional. 1.1. Install cylinder head lifting device on center of cylinder head (9) with two washers (10.2) and capscrews (10.1). 1.2. Install cylinder head (9) on cylinder block (7) and remove two capscrews (10.1), washers (10.2), and cylinder head lifting device. 2. Clean threads of capscrews (10) with a wire brush to remove old pipe sealing compound. Apply pipe sealing compound to threads and under heads of capscrews (10). CAUTION Failure to tighten cylinder head capscrews in proper sequence may result in leaks or damage to cylinder head. 3. Install cylinder head (9) on cylinder block (7) with seventeen capscrews (10). Tighten capscrews (10) to 20 lb-ft (27 N•m), following torque sequence shown. 4. For 6.2 L engine, tighten seventeen capscrews (10) to 50 lb-ft (68 N•m), following torque sequence shown. 4.1 For 6.5 L engine, tighten seventeen capscrews (10) to 55 lb-ft (75 N•m), following torque sequence shown. 4.2 For 6.5 L engine, retighten seventeen capscrews (10) to 55 lb-ft (75 N•m), following torque sequence shown. 5. Tighten seventeen capscrews (10) an additional 90°, following torque sequence shown and mark capscrews (10). 6. Repeat steps 1 through 5 for opposite side. TORQUE SEQUENCE 10 10.1 10.2 11 9 7 12 CYLINDER HEAD LIFTING DEVICE