Quote:
Originally Posted by wdfifteen
For U joints with good seals that are greased regularly just one pump from the grease gun. You can dislodge/damage the seals by pumping a bunch of grease through them. If the seals are bad, pump a lot through it to displace old contaminated grease.
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This is how my dad taught me, back when every car and truck had about 37 zerk fittings on it. On anything he had owned for awhile (and had therefor been through the whole thing) it was one pump once a year on all fittings. On stuff new to the stable, it was pump 'em until grease comes out past the seals, then very carefully wipe between the seal and where it seats to regain a good seal. Where possible... Sometimes all you could do was wipe off the excess on the outside.