Rear Wheel Bearings - ZR-1 Net Registry Forums

4DSZR1 · 08-31-2009

Thinking about the long trip next May to BG has me thinking of things that I need to do before I take the old girl on another long trip. When I have my car up on jacks and grab my rear tires at the 12 and 6 o'clock positions and feel for play, there is a slight amount.... My question, if I can detect it by hand is it time to change them??

Thanks in advance

Rick

08-31-2009

Rick, how much play? The book spec is minimal.

SharkPilot · 08-31-2009

Rick,

I just solved a mystery noise in my car's rear and it turned out to be u-joints. In the process of chasing down and diagnosing the noise I wiggled the wheels with the car in the air.
With my hands at 12:00 & 6:00 as you described I had less than 1/8" movement out at the tire shoulder. I ran the car with the rear in the air and the wheels removed and both bearings sounded fine and smooth. I was listening with a stethoscope. When the half-shafts were out I could not detect any movement in the hubs and they turned very smoothly.

These are just my observations of my own car but I hope it helps.

Have fun at Bowling Green. I sure wish I lived closer.

SharkPilot

4DSZR1 · 09-01-2009

less than an 1/8th inch of movement

4DSZR1 · 09-01-2009

Good idea Shark :-) Its far for all of us out here in the west, but its one of those things I have to do once in the ZR-1

lbszr · 09-02-2009

Quote:

Originally Posted by 4DSZR1

Thinking about the long trip next May to BG has me thinking of things that I need to do before I take the old girl on another long trip. When I have my car up on jacks and grab my rear tires at the 12 and 6 o'clock positions and feel for play, there is a slight amount.... My question, if I can detect it by hand is it time to change them??

Thanks in advance

Rick

Something you could check that I found on mine, the spindle nut was tight against the safety retainer as if it moved, with a little bearing play, retorqued to 190lbs. and play was gone and it has survived 4 track events.

4DSZR1 · 09-02-2009

Another great idea!!! I'll go check now.

Thank you

08-31-2009	#1
4DSZR1 Join Date: Dec 2005 Posts: 692	Rear Wheel Bearings Thinking about the long trip next May to BG has me thinking of things that I need to do before I take the old girl on another long trip. When I have my car up on jacks and grab my rear tires at the 12 and 6 o'clock positions and feel for play, there is a slight amount.... My question, if I can detect it by hand is it time to change them?? Thanks in advance Rick

08-31-2009	#2
Jeffvette Guest Posts: n/a	Re: Rear Wheel Bearings Rick, how much play? The book spec is minimal.

08-31-2009	#3
SharkPilot Join Date: Aug 2005 Location: Anaheim, California Posts: 105	Re: Rear Wheel Bearings Rick, I just solved a mystery noise in my car's rear and it turned out to be u-joints. In the process of chasing down and diagnosing the noise I wiggled the wheels with the car in the air. With my hands at 12:00 & 6:00 as you described I had less than 1/8" movement out at the tire shoulder. I ran the car with the rear in the air and the wheels removed and both bearings sounded fine and smooth. I was listening with a stethoscope. When the half-shafts were out I could not detect any movement in the hubs and they turned very smoothly. These are just my observations of my own car but I hope it helps. Have fun at Bowling Green. I sure wish I lived closer. SharkPilot __________________ [CENTER][SIGPIC][/SIGPIC] 1991 ZR-1 #1135 Red/Red with both tops. Stock except for an open topped K&N filter.[/CENTER]

09-01-2009	#4
4DSZR1 Join Date: Dec 2005 Posts: 692	Re: Rear Wheel Bearings less than an 1/8th inch of movement

09-01-2009	#5
4DSZR1 Join Date: Dec 2005 Posts: 692	Re: Rear Wheel Bearings Good idea Shark :-) Its far for all of us out here in the west, but its one of those things I have to do once in the ZR-1

09-02-2009	#7
4DSZR1 Join Date: Dec 2005 Posts: 692	Re: Rear Wheel Bearings Another great idea!!! I'll go check now. Thank you