Check brake linings and brake drums for excessive wear or scoring. Lubricate all brake moving parts using a high temperature brake lubricant. Do not get grease or oil on brake linings. Remove any rust from braking surface of drums with fine emery paper or crocus cloth. Protect bearings from contamination while so doing.
Inspect grease seals for wear or nicks.
Lubricate hub bearings. Reinstall hubs, mount and tighten wheels.