See Figure 1
Chassis greasing should be performed every 6 months or 7500 miles (12,000 km), it can be performed with a commercial pressurized grease gun or at home by using a hand operated grease gun. Wipe the grease fittings clean before greasing in order to prevent the possibility of forcing any dirt into the component. Just add enough fresh grease to fill (and thereby swell the rubber seal). DO NOT add grease until it pours from the seal, as this means the SEAL can no longer properly protect the grease from moisture or dirt.