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There should be a hole in the end of each grease fitting with a spring loaded check ball. The check ball allows grease to through the fitting under pressure from the grease gun but keeps the grease from coming back out under pressure, keeps out dirt and debris, and keeps out water. Keeping the grease in and the dirt, grime, and water out are key to prolonging the life of the tie rod end, king pins, etc. If you're having trouble getting the grease fitting to accept the grease under pressure from the grease gun, be sure that the grease gun coupler is seating completely on the grease fitting. Sometiimes you have to really put pressure on the fitting to get the fitting to allow the grease to be pumped through. If this doesn't work, the grease fitting check ball may be "stuck". If so, try pushing in on the check valve with a small center punch, scratch awl, # 1 Phillips srewdriver bit, or some other small pointed tool to unstick the check valve. Then try to pump grease through it again. If this doesn't work, and sometimes it doesn't, you'll need to simply install a new grease fitting. Hope this helps. GA Jim
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