TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download
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TM9-2815-202-34 7-4. EXHAUST MANIFOLD AND TUBE REPLACEMENT This task covers: a. Removal b. Installation INITIAL SETUP MODELS 7083-7399 TOOLS AND SPECIAL TOOLS General mechanics tool kit (App B, Item 96) Torque wrench (App B, Item 101) MANDATORY REPLACEMENT PARTS 17 Locking nuts (App F, Item 103) 1 Gasket (App F, Item 62) 2 Gaskets (App F,ltem29) EQUIPMENT CONDITION Para Description 3-10 Turbocharger oil return line removed 3-13 Turbocharger oil supply line removed 3-15 Air inlet manifold removed 7-2 Turbocharger regulator removed 7-3 Turbocharger removed PERSONNEL REQUIRED: 2 a. Removal (1) (2) (3) (4) (5) (6) (7) Remove two nuts (1) from two clamps (2) securing exhaust crossover tube (3) to right exhaust manifold (4) and adaptor (5) on left exhaust manifold (6). Slide clamps onto crossover tube. Loosen five locking nuts (7) securing right exhaust manifold (4) to cylinder head. Remove exhaust crossover tube (3) and clamps (2) from exhaust manifold (4) and adaptor (5). Remove clamps from tube. Slide exhaust manifold (4) upward and off cylinder head. Remove five locking nuts (7), three beveled washers (8), and two end retainers (9) from studs (10) on right cylinder head. Discard locking nuts. Remove exhaust manifold gasket (11). Discard gasket. Remove four locking nuts (12) securing adaptor (5) to left exhaust manifold (6). Discard locking nuts. Remove adaptor (5) and gasket (13) from exhaust manifold. Discard gasket. WARNING Use a second person to hold or secure exhaust manifold when loosening self-locking nuts to prevent manifold from slipping or falling. Injury to personnel can occur if manifold is not secured. 7-6