TB-9-2300-378-14 Technical Bulletin for Air Induction System M48 M60 Download
Page 106 of 296
TB 9-2300-378-14 4-11. Top Deck Grille Door Rework. a. General Field reports indicate that air cleaner boxes are being damaged by top deck grille doors. This condition usually occurs following air cleaner replacement or after vehicle overhaul. These procedures provide inspection and rework instructions for the grille door hinges to prevent this damage to the air cleaner assembly. Corrective action to eliminate this interference condition is to be performed by DS level maintenance personnel. b. Procedures (Fig. 4-25). WARNING Ensure all ammunition is removed from tank prior to performing modication. Failure to do so can cause death, injury or damage to equipment. CAUTION Ensure that prior to traversing turret, the top loading air cleaner doors and ammo rack handles are properly secured. Failure to do so can cause damage to doors or handles. (1) Disconnect three ground straps (TM-20). (2) Manually traverse turret, so main gun is positioned over right or left stowage box, to gain access to top deck grille doors. WARNING Welding in the vicinity of fuel oil and hydraulic fluid is dangerous. Place flameproof material between welding area and fluid carrying components. Cover adjacent components with wet rags or canvas to protect against weld spatter. Station a helper in the immediate area with an approved fire extinguisher before beginning welding operations. Failure to adequately protect against fire can cause injury, death, or damage to equipment. Extreme caution should be exercised to avoid burning air cleaner gasket. CAUTION During rework of grille doors, care must be taken to assure the grille door hinges do not strike the air cleaner as the doors are opened. NOTE Perform steps 3 through 7 to left and right side of vehicle. 4-46