TM 9-2320-366-34-1D-27. TRANSMISSION LIFTING BRACKET (CONT)ItemPart NumberMaterial DescriptionSizeQty1T12419142-001Plate, Steel, ASTM A829,Grade 4130, HardnessRockwell C28-3210.08 in. (256 mm) x 5.50 in. (139.7mm) x 0.50 in. (12.7 mm) thick1Figure D-51. Lower Lift Bracketa. All dimensions are in inches (millimeters).b. Fabricate (1) from ASTM A829, Grade 4130, Hardness Rockwell C28-32 steel plate.c. Tolerance on dimensions shown to two decimal places in Figure D-51. Lower Lift Bracket will be held to 0.01in. (0.25 mm).d. Tolerance on dimensions shown to three decimal places in Figure D-51. Lower Lift Bracket are held to 0.005in. (0.13 mm).e. Drill 0.50 in. (12.7 mm) diameter hole through 5 places on a 6.417 in. (163 mm) radius equally spaced at 20apartas identified in Figure D-51. Lower Lift Bracket.f. Round piece to 5.50 in. (139.7 mm) radius as shown in Figure D-51. Lower Lift Bracket.g. Drill 4 slots 0.37 inch (9.4 mm) diameter on 6.417 in. (163 mm) radius as shown in Figure D-51. Lower LiftBracket.h. De-burr and remove all sharp edges.D-56
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