TM-9-2350-273-BD M60 M48 Battle Damage Assessment and Repair Download
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TM 9-2350-273-BD ARMAMENT AND FIRE CONTROL SYSTEMS Procedural Steps (Cont'd) 17. Tie two guide ropes to replacement gun tube near muzzle. 18. Attach sling to hoisting gun with cargo strap, rope, or cable. 19. Elevate hoisting gun to take slack out of sling. 20. Grasp two guide ropes to steady the gun during installation. 21. Install replacement gun tube in tank by alternate y traversing, elevating and lowering the hoisting gun (manually). 22. Turn gun tube clockwise approximately one-eighth turn. 23. Install locking pin in breech and secure with locking pin setscrew. 24. Remove sling and cargo strap from gun tubes. 25. Install hoisting tank's front gun tube (outer shell). 26. Install replacement gun's front and rear gun tubes (outer shells) and bore evacuator chamber. 27. Record the BDAR action taken. When the mission is completed, as soon as practicable, repair tank using standard maintenance procedures. 10-5. BORE EVACUATOR DAMAGED General Information As a round is propelled through the gun tube, gas pressure is forced inside the bore evacuator. As the round leaves the tube, bore evacuator pressure rushes out behind the round, exhausting excessive smoke and fumes. If the evacuator is damaged or leaks, this pressure is lost, causing excessive smoke and fumes to enter the turret as the breech block opens. This procedure repairs puncture damage to the bore evacuator. Smoke fumes limit the crews capabilities to operate inside the turret. Limitations: ● None Personnel/Time Required: ● 1 soldier ● 1 hour Materials/Tools: ● Welding equipment ● Sheet metal, l/4-inch thick (size dependent on damage) 10-7