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Join Date: Dec 2000
Location: Athens, Ohio
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Unhappy rear wheel bearings

The rear wheels bearings on my 1983 944 appear to be worn. There is a rhythmic wum-wum noise from the rear, increasing with speed, also present when coasting and in neutral.
I jacked it up last night and there is a slight bit of play in both rear wheels, BUT, only when holding the top and bottom of the tire, NOT when pushing/pulling on the side of the tire. So, no play side-to-side, slight play top-to-bottom. There is no change in this when the tire is rotated to a new position.
The tranny bearings were replaced about 2000 miles ago, and the CVs are new. Also no apparent play in trailing arm bushings. I do not see why a worn bearing should not give a symmetrical response to a wiggle.
Any thoughts???
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Old 02-26-2002, 07:09 AM
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Obin Robinson's Avatar
 
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Location: Virginia Beach, VA
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i had the exact same issue in my 924. it sound like rear wheel bearings indeed! buy the bearings (all of them together should be $100 for all the bearings and seals in total), and then have them pressed in at a local muffler/brake shop. it will make a HUGE difference in your car.

good luck!

obin
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Old 02-26-2002, 07:18 AM
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A couple of months back I replaced the wheel bearings on my '83. The wheels had a slight wiggle when the car was jacked up, although I can't remember if it was up & down or side to side. The noise was definitely there. I did the work at home and it took about 4-5hrs. You can get the bearings in and out by carefully using a good piece of wood as a drift punch.
Obin is right; it's about $100 for all the bearing and seals. I would recommend changing them soon. When I took mine apart, the inner race on the left outermost bearing had cracked. There is a o-ring that sits behind the hub that was worn flat. I think it may have let water into the bearings. It may have been only a matter of time before the wheel seized.
I would also recommend using some emery cloth on your half shafts, to take off all the burnt grease that you'll probably find.
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'83 944
'70 914
Old 02-26-2002, 07:49 AM
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before the 924 wheel bearings were replaced, they wobbled up-and-down and not the in-and-out like the front ones would. the bearings were badly worn when they were replaced. the labor for doing all the work was $100 at the local Monro muffler/brake. very easy job if you have a hydraulic press... very PITA if you don't.

make sure you get all new seals! a leaky seal is what kills the bearings because moisture and dirt get in and destroy them.

obin
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Old 02-26-2002, 08:23 AM
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A really tough part is breaking the axle nut loose without an impact wrench, about an 8 to 10 ft piece of 1 1/4 pipe & a breaker bar. Forgot the sizes but seals can be driven in with PVC pipe & or couplings. You want to be careful & not let the lock ring go flying.


drew1
Old 02-26-2002, 08:53 PM
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