Wheel bearings on 1995 Geo Prizms are sealed units and cannot be repacked with grease. You must buy new bearings to be pressed on hubs by mechanic with proper tools. If bearings are worn, replace ASAP before bearings start damaging hubs, you'll save bunches of money.
How do you replace the timing belt on a 1994 Geo Prizm 1.6?
See the related question: How do I replace the water pump on a 1993 Geo Prizm 1.8L?
Geo Prizms have no grease fittings. All parts are sealed units and simply must be replaced when they wear out.
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From under the car.
Remove the old mount & replace with the new.
If you are referring to the water inlet hose on the back of the water pump you can use this question as reference. How do i replace the water pump on a 1993 Geo Prizm 1.8L?
it is possible the wheel hub is damaged.
the old ones have to be pressed out and new ones pressed back in.
You don't fix it, you replace it.
You may find some help by searching for this question.How do i replace the water pump on a 1993 Geo Prizm 1.8L?
It is built into the alternator. I would just replace the alternator.