12-03-2021, 07:17 PM | #1 |
Registered User
Join Date: Sep 2003
Location: Wichita, KS
Posts: 3,735
|
Rear axle lockup
Hey guys and gals - can you help me?
What happened: I coasted to almost a stop (5 mph?) in my 72 C20. Right before putting the clutch in to put the trans in neutral, the truck lurched to a complete stop while making a grinding noise coming from the rear of the truck. I was able to put it in neutral without issue. I then easily put it in gear to try driving slowly, but the truck did not move, and you could feel it was "stuck." I put it back in neutral. I got out of the truck and tried to push it while in neutral -- still felt stuck regardless of which way you pushed the truck. Checked the driveshaft and all looked good. A few other guys helped me push it, at which point, it eventually broke free and rolled smoothly. I put it in gear and drove 15 minutes more to get home. After starting home I could hear a rotational, metal-on-metal, scratching noise which eventually went away after the first few minutes. Today, I finally opened up the rear cover expecting to see loose metal pieces, but everything looked good to my untrained eye. I jacked up the driver rear wheel and spun it by hand and watched the gears rotate fine for several revolutions. Did the same thing on the passenger side. No metal, debris, etc was found. What do I do now? Fill it with new lube and drive it? Where else could it have bound up? I believe it is a HO-52 rear end with coil springs. |
12-03-2021, 08:00 PM | #2 |
Registered User
Join Date: May 2011
Location: Northern Calif.
Posts: 3,771
|
Re: Rear axle lockup
Brake shoes come loose?
|
12-03-2021, 08:00 PM | #3 |
Registered User
Join Date: Jul 2015
Location: 2nd left past the stump on a dirt road.
Posts: 2,629
|
Re: Rear axle lockup
???
Seen the carrier bearing do some crazy stuff Last edited by toolboxchev; 12-03-2021 at 08:11 PM. |
12-03-2021, 08:10 PM | #4 |
Registered User
Join Date: Jul 2015
Location: 2nd left past the stump on a dirt road.
Posts: 2,629
|
Re: Rear axle lockup
Me thinks everyone is afraid to speculate a diagnosis on this one.
|
12-03-2021, 08:12 PM | #5 |
Registered User
Join Date: Sep 2003
Location: Wichita, KS
Posts: 3,735
|
Re: Rear axle lockup
I think I will check that tomorrow.. Possible I guess. I replaced the shoes several months ago.
|
12-03-2021, 08:28 PM | #6 |
Senior Member
Join Date: Jan 2005
Location: CA
Posts: 5,982
|
Re: Rear axle lockup
I wonder if a piece of one of the bearing cages came apart and jammed the roller bearings. I had that happen on the steering head bearings on an old Honda dirtbike once. The steering completely locked right when I was riding through a creek. Caused me to tip over into the water. I was able to get it steering again with some forceful twists of the bars. When I took it apart later, a piece of the bearing cage had been steamrolled as thin as tinfoil by the bearings.
|
12-06-2021, 03:41 PM | #7 | |
Registered User
Join Date: Sep 2003
Location: Wichita, KS
Posts: 3,735
|
Re: Rear axle lockup
Quote:
Thanks everyone for the input! |
|
12-07-2021, 10:49 AM | #8 |
Registered User
Join Date: Mar 2005
Location: Jurupa Valley, Ca
Posts: 1,210
|
Re: Rear axle lockup
You may want to think about pulling everything apart cleaning and possibly replacing all bearings in the rear end. Metal particles have a way of moving thru the entire assembly and you could have issues later on.
__________________
Terry 1970 Custom Camper/C20 , GM Crate 350/7004R, Dana 60, factory AC |
12-07-2021, 11:24 AM | #9 |
Registered User
Join Date: Sep 2003
Location: Wichita, KS
Posts: 3,735
|
Re: Rear axle lockup
Yes, I agree. I think I will do that. It needs new brake shoes too, so I think I'll just replace everything.
|
Bookmarks |
Thread Tools | |
Display Modes | |
|
|