TM 9-2350-261-34 5. If armor gun shield mounting holes are notdrilled and tapped in hull top deck, go tostep 6. If these holes have been drilled andtapped, go to step 9.N O T EAll dimensions are in inches with metricequivalents.6. Measure center points for 12 holes as shownbelow, 6 holes on each side of top deck.7. Drill holes to a maximum depth of 1-1/4inch (3 cm) using drill sizes as shown below.8. Tap six holes (rear) to 1/2–13 UNC–2B, twoholes (middle) to 5/8-11 UNC-2B, and fourholes (front) to 3/8-16 UNC-2B. Tap allholes to 7/8 inch (22 mm) minimum depth.9. If holes are already in carrier, remove anddiscard six 1/2 inch (13 mm) screws andwashers, two 5/8 inch (16 mm) screws andwashers, and four 3/8 inch (10 mm) screwsand washers.20-6
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