You should remove and inspect the bearing cone and roller assemblies according to the applicable MIM. Thoroughly clean the bearings, bearing cups, wheel bores, and grease retainers with P-D-680, type II, solvent to remove the grease, preservative compounds, and contamination.

NOTE: The organizational-level and intermediate-level procedures for cleaning and inspecting wheeI bearings, retainers, cups, and cone and roller assemblies are the same.

You should repack bearings with MIL-G-81322 grease. Bearings may be repacked either with pressure equipment or by hand. See figures 11-8 and 11-9. The pressure method is recommended because it is easier, faster, and reduces the possibility of con-tamination. The pressure method assures a more even distribution of grease within the bearing.

NOTE: You should ensure bearings are completely dry before packing (them with lubricant.

You should also spread a thin layer of grease on the bearing cups. Inspect the grease retainers for evidence of deterioration, contamination, or water saturation. You should replace them if necessary. Presoak the retainers with VV-L-800 oil prior to installing them.

Refer to the NA 01-1A-503 manual for more detailed information on wheel bearing maintenance.

Limited and isolated corrosion and physical damage should be blended. Wheel rims, outside ends of bearing hubs, nicks, gouges, and pock marks are not considered significant unless the defect is deeper than 0.020 of an inch. The defect should not be blended out unless there is active corrosion in the defect. However, all burrs must be removed. Corrosion or other defects should be blended out not to exceed a maximum of one-sixteenth of an inch. All damage must be removed within this allowance. The maximum depth of blendout for all other wheel areas is 0.010 of an inch.

The rims, bearing hub ends, and tire bead area can be blended out with a medium or fine cut, half-round or round tile. You should lightly file the damaged area to remove the defects. After the defects have been removed, you should hand polish the areas with 320 or finer grit aluminum oxide (P-C-451). All file marks should be removed. The areas should be painted according to NAVAIR 04-10-1 and NAVAIR 01-1A-509.

Split rim wheels are manufactured and assembled as a matched assembly. Each half will have the same serial number. If a wheel half is rejected at the IMA, the remaining half may be matched to a serviceable replacement to make a complete assembly. When you combine unmatched wheel halves, each half must have the same part number. Every effort should be made to keep the manufacture dates of each half as close as possible. Each half of this wheel assembly will now have different serial numbers, which is acceptable.