TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 2 Download
Page 122 of 953
3-55. RIGHT EXHAUST MANIFOLD HEAT SHIELD REPLACEMENT This task covers: a. Removal b. Installation INITIAL SETUP: Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) Special Tools Hex-head driver, 8mm (Appendix B, Item 156) Materials/Parts Locknut (Appendix G, Item 128) Personnel Required One mechanic One assistant Manual References TM 9-2320-280-10 TM 9-2320-280-24P Equipment Condition • Right exhaust manifold rear heat shield removed (para. 3-54). • Hood raised and secured (TM 9-2320-280-10). • Engine access cover removed (para. 10-15). General Safety Instructions Do not touch hot exhaust system components with bare hands. WARNING Do not touch hot exhaust system components with bare hands. Severe injury will result. 1. Using hex-head driver, loosen three socket head screws (3) on heat shield (4), exhaust manifold (2), and cylinder head (1). 2. Remove locknut (7), washer (6), capscrew (5), washer (6) and heat shield (4) from crossover pipe (8) and exhaust manifold (2). Discard locknut (7). 1. Position heat shield (4) on exhaust manifold (2) and crossover pipe (8). 2. Using hex-head driver, secure heat shield (4) and exhaust manifold (2) to cylinder head (1) with three socket-head screws (3). Tighten socket-head screws (3) to 25-33 lb-ft (34-45 N•m). 3. Install heat shield (4) on exhaust manifold (2) and crossover pipe (8) with washer (6), capscrew (5), washer (6), and locknut (7). Tighten locknut (7) to 37 lb-ft (50 N•m). b. Installation a. Removal TM 9-2320-280-20-2 3-100 Change 3