TM 9-2330-390-14&P4-83. TOP AND BOTTOM BEAMS AND POSITIONING CYLINDERS REPLACEMENT(Con't).4.Remove telescopic brace (see paragraph 4-86).5.Remove hydraulic lift cylinders (see paragraph 4-110).6.Remove top and bottom lockout brackets from axle assembly and pivot axle bracket (see paragraph 4-82).Use extreme caution when lowering top and bottom beams and placing on the ground.Ensure that lifting device is secure and all personnel stand clear. Failure to follow thiswarning may cause serious injury to personnel or damage to beams and positioningcylinders.7.8.Lower top and bottom beams (1 and 3) to the ground and support on wooden blocks or other cribbing.Remove two cotter pins (15), flatwashers (14), and clevis pins (13) from positioning cylinders (2) and top beam(1). Discard cotter pins.9.With top beam (1) suitably supported, remove top beam with telescoping vertical tubes from positioningcylinders (2) and bottom beam (3). Keep top beam with telescoping tubes and bottom beam supported onwooden blocks.4-224 Change 3
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