9-in rear end woes

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   Greetings and much thank you in advance. I've got a 73 Ranchero with a 9-in rear end and it had a bit of a howling noise that developed sounded like a set of off-road tires almost so come to find out the rear end was 3 qts low on oil. Filled it up with oil and it didn't go away but it started leaking. So I pulled the axles pulled the third member out I was going to change all the bearings in it at least the carrier bearings in the pilot bearing but none of them have any significant pitting or damage or wear patterns doesn't seem like they're needing to be replaced maybe it was just due to incorrect opinion spacing any ideas on this? 

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Uncle Larry Members Profile Send Private Message Find Members Posts Add to Buddy List New Member Joined: 18-November-2023 Location: 92543 Status: Offline Points: 13	Post Options Post Reply Quote Uncle Larry Report Post Thanks(0) Quote Reply Topic: 9-in rear end woes Posted: 12-July-2024 at 6:06AM
	Greetings and much thank you in advance. I've got a 73 Ranchero with a 9-in rear end and it had a bit of a howling noise that developed sounded like a set of off-road tires almost so come to find out the rear end was 3 qts low on oil. Filled it up with oil and it didn't go away but it started leaking. So I pulled the axles pulled the third member out I was going to change all the bearings in it at least the carrier bearings in the pilot bearing but none of them have any significant pitting or damage or wear patterns doesn't seem like they're needing to be replaced maybe it was just due to incorrect opinion spacing any ideas on this?

Rockatansky Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 30-July-2010 Location: On The Road Status: Offline Points: 6398	Post Options Post Reply Quote Rockatansky Report Post Thanks(0) Quote Reply Posted: 12-July-2024 at 10:54AM
	they say if a Model T isn't leaking oil there's no oil in it, same with your 9" sounds like (pun intended) it needs a complete rebuild with new ring & pinion or replace the complete pig sorry for your loss
	72 GT Ute

Uncle Larry Members Profile Send Private Message Find Members Posts Add to Buddy List New Member Joined: 18-November-2023 Location: 92543 Status: Offline Points: 13	Post Options Post Reply Quote Uncle Larry Report Post Thanks(0) Quote Reply Posted: 12-July-2024 at 12:13PM
	The thing is nothing looks burned or harmed in any way. I don't see any damage

Rockatansky Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 30-July-2010 Location: On The Road Status: Offline Points: 6398	Post Options Post Reply Quote Rockatansky Report Post Thanks(0) Quote Reply Posted: 13-July-2024 at 1:34PM
	could be an axle bearing or both? did you get eyeballs on the pinion pilot bearing & journal? won't cost anything but time & effort to put it back together with pinion depth & ring gear lash reset and see what it does
	72 GT Ute

handsofstone Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 13-April-2018 Location: Northeast Status: Offline Points: 4229	Post Options Post Reply Quote handsofstone Report Post Thanks(0) Quote Reply Posted: 16-July-2024 at 4:21PM
	Does it make the noise always or on acceleration or deceleration only? I ran mine low after replacing seals while awaiting the parts for a trac-lok to install at a later date. It had maybe a quarter when it started to come out of the fill hole. Stupid me just plugged it and drove the rest of the season like that. It was evidently enough to keep things wet and not kaboom.

Uncle Larry Members Profile Send Private Message Find Members Posts Add to Buddy List New Member Joined: 18-November-2023 Location: 92543 Status: Offline Points: 13	Post Options Post Reply Quote Uncle Larry Report Post Thanks(0) Quote Reply Posted: 17-July-2024 at 8:14PM
	Mostly 50 mph plus on or off throttle

Uncle Larry Members Profile Send Private Message Find Members Posts Add to Buddy List New Member Joined: 18-November-2023 Location: 92543 Status: Offline Points: 13	Post Options Post Reply Quote Uncle Larry Report Post Thanks(0) Quote Reply Posted: 17-July-2024 at 8:15PM
	Mostly 50 mph plus on the throttle and off

handsofstone Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 13-April-2018 Location: Northeast Status: Offline Points: 4229	Post Options Post Reply Quote handsofstone Report Post Thanks(0) Quote Reply Posted: 23-July-2024 at 4:55PM
	Rebuild it and be done. Lots of videos on youtube that go through the whole process. Parts kits are available from Rock Auto. If you have 2.75/1 gears it will be a gear change unless you can find a good set used.