Scoby4wd Posted November 13, 2019 Share Posted November 13, 2019 On my 83 Wagon (4wd, auto) I noticed a humming from the rear end that changes with speed. I pulled the drums off each side and cleaned them up, bearings looked ok and didnt make any obvious noises. Brake shoes were in great shape as well. As I said, the hum changes with speed. It does not change by turning or by pressing or releasing the throttle. I changed the gear oil in the rear end and maybe it is a little quieter but I could be imaging it. This normal? Quote Link to comment Share on other sites More sharing options...
DaveT Posted November 13, 2019 Share Posted November 13, 2019 Noise is not normal. Failing universal joints can cause this kind of noise. Check them first. Wheel bearings can make a noise, but you can't tell condition by looking - unless you took the bearings apart. If the axle nuts were tight, and the seals were good, they are probably ok. 1 Quote Link to comment Share on other sites More sharing options...
el_freddo Posted November 13, 2019 Share Posted November 13, 2019 I’m putting money on wheel bearings. The cv shafts shouldn’t be giving you any trouble since they’re generally ever used - if you don’t fit into this category, then they could be a possibility. Cheers Bennie Quote Link to comment Share on other sites More sharing options...
Scoby4wd Posted November 15, 2019 Author Share Posted November 15, 2019 CV axles look fine. I agree its probably wheel bearings I am just surprised because ever bad bearing I have had has made more of a griniding noise and mostly when turning. Quote Link to comment Share on other sites More sharing options...
el_freddo Posted November 15, 2019 Share Posted November 15, 2019 Bad bearings certainly can have a whining noise to them! It’ll even change noise with bumps in the road. Cheers Bennie Quote Link to comment Share on other sites More sharing options...
Scoby4wd Posted November 18, 2019 Author Share Posted November 18, 2019 Its not really a whining noise. Its more like a very low hum. Sounds kind of like a straight cut gear mesh. Quote Link to comment Share on other sites More sharing options...
NV Zeno Posted November 19, 2019 Share Posted November 19, 2019 I agree with the U joint diagnosis. Had a speed related hum on my '83 some years back, and my Subaru guru at Norm's Auto Repair in South Tahoe replaced them. No more hum. That was about 100,000 miles ago, at 292,000 miles. 1 Quote Link to comment Share on other sites More sharing options...
Scoby4wd Posted November 19, 2019 Author Share Posted November 19, 2019 I'm going to check that on the weekend. I hope that's it, i have the tools to press in/out the joints. Quote Link to comment Share on other sites More sharing options...
DaveT Posted November 19, 2019 Share Posted November 19, 2019 The u joints are staked. I had a local drive shaft shop rebuild one of mine, so I know it can be done. Quote Link to comment Share on other sites More sharing options...
el_freddo Posted November 20, 2019 Share Posted November 20, 2019 9 hours ago, DaveT said: The u joints are staked. I had a local drive shaft shop rebuild one of mine, so I know it can be done. Not on an ‘83. They’re replaceable. At least they are in Oz right up to the last brumby run in ‘91. L series, totally staked. Machining required to convert to replaceable uni joint yokes. Cheers Bennie 1 Quote Link to comment Share on other sites More sharing options...
DaveT Posted November 20, 2019 Share Posted November 20, 2019 Interesting. Well, that's a good thing, makes it easier to repair. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.