TM-9-2815-200-35 Maintenance Manual for AVDS-1790-2M AVDS-1790-2A and AVDS-1790-2AM Engines Download
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Remove 1. Remove plain nut (A) and lock washer attaching drive coupler half to fuel injection pump spur gearshaft. Install 1. Install plain nut (A) and lock washer securing drive coupler half to fuel injection pump spur gearshaft. Tighten the nut to a torque of 900 pound-inches. Figure 6-164. Removing or installing fuel injection pump diaphragm drive coupler half. Caution; Do not attempt to remove the diaphragm drive coupler half from the shaft using a standard puller as shown in figure 6-163. This may distort the coupler and render it un- serviceable. Use puller as shown. 1. Remove coupler half (A) from spur gearshaft using improvised tool (fig. 2-2). 2. Remove pilot ring (B) from gearshaft. 3. Remove Woodruff key (C) from gearshaft. Note. The diaphragm type drive coupler halves are not matched sets and it is not necessary to maintain them in pairs. The parts are interchangeable between assemblies. Figure 6-165. Removing fuel injection pump diaphragm drive coupler half. 6-140