MODIFY5. Grind weld area level and smooth. Use discsander.6. Locate center of first hole as shown.NOTEDrill all holes straight and at right anglesto hull bottom plate.7. Drill first hole with 7/16 inch (11 mm)diameter drill. Bottom plate is 1-1/8 inches(3 cm) thick. Do not break through. Useportable electric drill.8. Tap first hole with a 1/2-13UNC tap to aminimum thread depth of 7/8 inch (22 mm).Use twist drill.TM 9-2350-261-349. Position new anchor (1) 32 degrees fromreference line as shown, with centerline ofanchor and bottom centerline of ramp pulleyin alignment.10.11.12.13.Secure anchor (1) with one washer (2) andone screw (3).Use new anchor (1) as template. Locatecenter of remaining two holes. Removeanchor. Drill and tap holes same way asfirst hole (steps 7 and 8).Clean surface with wire brush.Paint any exposed metal surfaces(see TM 43-0139).GO TO NEXT PAGEChange 4 10-7
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