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TB-9-2350-368-25 Powerplant Test Stand M113A2 M113A3 M548A1 M548A3 Download

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TB 9-2350-368-25 2-12 e. Powerplant Mount Location Bill Of Materials Item Nomenclature Part Number NSN Qty 3” Wide High Density Rubber Pad 1 Adhesive (or similar) MMM-A-132 8040-01-102-2098 Kit 2 26 inches (66.0 cm) A/R Hardware 3 Screw B1821BH750C150N 3 4 Washer 10910174-3 3 5 Nut MS51922-57 3 6 Screw B1821BH750C400N 1 7 Screw B1821BH375C150N 2 8 Washer 10910174-8 3 9 Nut MS51922-17 3 10 Screw B1821BH375C550N 2 1. Measure 20 inches (50.8 cm) from front of test stand frame along left and right forward spacers. Measure 2 inches (5.1 cm) to the left of the left spacer and mark the intersection of the 20 inch mark. Align the front edge of the engine mount with the three alignment marks and tack weld to frame. See Figure 2-9. WARNING Hanging loads can kill or injure you. Keep away from hanging loads and overhead equipment. Keep hands out of area while powerplant is being lifted or lowered on powerplant test stand. 2. Measure 51 inches (129.5 cm) from centerline of welded front engine mount. Scribe a line across frame at this point. Align transmission mount angle apex with scribed line. Lower a M113A3 powerpack and connect to front engine mount with two screws (3), washers (4), and nuts (5). Continue to lower powerpack and align transmission mount with transmission. Tack weld transmission mount. Remove two screws (3), washers (4), nuts (5) and engine from powerplant test stand. Weld transmission mount onto test stand frame in accordance with welding specification (ANSI/AWSD1.2). See Figure 2-9. 3. Apply adhesive (1) to rubber (2) pad and to surface test stand frame in front of transmission mount. Allow both surfaces to become tacky. Press rubber pad to test stand frame. Repeat process until a thickness of 1 inch (2.5 cm) is established. 4. Install transfer gearcase mount on either a M113A2 or M548A1 powerpack with two screws (6 and 7), washers (4 and 8), and nuts (5 and 9). 5. Position M113A2 or M548A1 powerpack on powerplant test stand and secure to front engine mount with two screws (3), washers (4), and nuts (5). 6. Use gearcase mount as guide, mark holes. Remove powerpack, and drill two 1/2 inch (1.27 cm) holes through powerplant test stand angle using transfer gearcase mount as a guide for holes. (See Figure 2-8).