TM-9-2815-200-35 Maintenance Manual for AVDS-1790-2M AVDS-1790-2A and AVDS-1790-2AM Engines Download
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Section V. REPLACEMENT OF INTAKE MANIFOLD TUBES AND INTAKE MANIFOLD ASSEMBLY 4-9. General This section covers the replacement of intake manifold tubes and the intake manifold assembly. Intake manifold tubes for cylinder 1, 2, 5, and 6, on each side of the engine can be replaced without removing the complete intake manifold. Intake manifold tubes for cylinder 3 and 4 on each side of engine cannot be replaced unless the complete intake manifold system is removed from the engine. In order to remove any cylinder intake manifold tube, it is necessary to remove the oil drain tube on that cylinder. Refer to Table 4-4 for illustrations and instructions on removal and installation of the manifold tubes or manifold assemblies. Figure references are listed under appropriate headings in the table. Table 4-4. Intake Manifold Tubes and Intake Manifold Assembly 4-10. Intake Manifold Tubes For instructional purposes replacement of intake manifold tube for cylinder 2L is described in this section. Tubes for cylinders lL, 5L, 6L, lR, 2R, 5R, and 6R are replaced in the same manner. Figure 4-107. Disconnecting or connecting intermediate cylinder head oil drain tubes-cylinder 2L. Disconnect 1. Loosen four hose clamps (A) and side hoses from intermediate cylinder head oil drain tube. 2. Remove screw and nut attaching flame heater fuel inlet line cushioned clamp (B) to loop clamp on cylinder head oil drain tube, if necessary. Connect 1. Install screw and nut securing flame heater fuel inlet line cushioned clamp (B) to loop clamp on cylinder head oil drain tube. 2. Slide hoses on intermediate cylinder head OR drain tube and tighten four hose clamps (A). Figure 4-106. Disconnecting or connecting cylinder head oil drain tube hoses-cylinders IL and 2L. Figure 4-108. Removing or installing inter- mediate cylinder head oil drain tube- cylinder 2L. 4-53