4-11. Top Deck Grille Door Rework.
F i e l d 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
e l i m i n a t e this interference condition is to be performed by DS level maintenance
Procedures (Fig. 4-25).
Ensure all ammunition is removed from tank prior to
p e r f o r m i n g modication. Failure to do so can cause death,
injury or damage to equipment.
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.
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
w i t h 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
a d e q u a t e l y protect against fire can cause injury, death, or
damage to equipment. Extreme caution should be exercised
to avoid burning air cleaner gasket.
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.
Perform steps 3 through 7 to left and right side of vehicle.