You should perform a visual inspection of the wheel for cracks, loose bearing cups, corrosion,

Figure 11-6.Aircraft tires-tubes-wheels safety poster.

Figure 11-7.Fuse plugs.

physical damage, and melted fusible plugs. See figure 11-7. Forward all wheels with cracks or loose bearing cups to supply for overhaul. Partially melted fuse plugs should not cause a wheel to be rejected. The plug may not need to be replaced. If the eutectic core material does not extend more than one-sixteenth of an inch above the top surface of the hex head, the plug may be kept in service "as is" with no restrictions. If the eutectic core material at the threaded end is not depressed more than one-sixteenth of an inch and there is no evidence of pinholes, the plug may be kept in service with no restrictions. Do not file, sand, or remove the eutectic material. If the eutectic material appears to be filed, sanded, or broken, you should assume the serviceable limits have been exceeded and reject the plug. You should perform the eddy current and dye penetrant inspections for wheels listed in NAVAIR 04-10-1. Inspect all tie bolts for corrosion, elongation, bending, stripped threads, or deformed shanks. You should also perform a magnetic particle inspection for cracks according to NAVAIR 01-1A-16. Any of the listed defects is cause for rejection of the tic bolt. Self-locking tie bolt nuts may be reused provided the nut cannot be turned onto the tie bolt by hand with the fingertight method prescribed in Structural Hardware, NAVAIR 01-1A-8. On disc wheels, you should inspect brake keys or gears for wear and looseness in accordance

Figure 11-8.Pressure repacking of wheel bearings.

Figure 11-9.Hand repacking of wheel bearings.

with NA 04-10-1. Replace worn brake keys and gears or reattach loose brake keys and gears in accordance with NA 04-10-1. Corrosion or rust on brake keys and gears is common, and is not cause for rejection.