Gx460 rear wheel bearing/hub questions.

[HVLA]

For The WIN! It wound up not being the bearing. The hold down pin broke, and the hold down spring was stuck between the rotor and dust cover. The spring caps were all gone. The brake shoe was also allowed to sit forward due to lack of hold down and the edge of the shoe was cuttin a groove inside the drum part of the rotor, not the braking surface.

All in all, $23 parking brake hardware kit, and 2 hours!

Fantastic!

 

[PoindAxster]

Bump on an oldie as I'm trying to do a desk diagnosis on what I'm starting to hear. There is a low noise beginning to happen at 8 mph and 22 mph from the rear passenger side. I also think things may be "sticking" in that same area. It feels like there is some pull over there.

100,000 miles.

I have not pulled the brake caliper off yet. Totally running on feel and ears right now.

AI is saying it is either a brake sticking or a wheel bearing.

 

[Rednexus]

100K is kind of early for a rear wheel bearing. They should last for at least 150-200K unless they are ran in really rough conditions. I'm betting it's a loose e-brake shoe, as the spring retention pins will sometimes fail and let the e-brake shoe contact the inner part of the rotor. I'd rotate the wheel by hand before you pull the brake rotor off, as you should be able to more clearly discern where the noise is coming from. Just FYI, the e-brakes on these are a royal pain to work on.

 

[r2m]

Bump on an oldie as I'm trying to do a desk diagnosis on what I'm starting to hear. There is a low noise beginning to happen at 8 mph and 22 mph from the rear passenger side. I also think things may be "sticking" in that same area. It feels like there is some pull over there.

100,000 miles.

I have not pulled the brake caliper off yet. Totally running on feel and ears right now.

AI is saying it is either a brake sticking or a wheel bearing.

Have you droped a jack under the rear diff and lifted the rear axle, then spun the wheel on each side?
Try that to see how much resistance and/or noise you get. Plus you may actually feel if there is any grinding with your wheel and as you rotate the tire.

 

[PoindAxster]

Will try that! I’m hoping this isn’t a bearing issue.

 

[Rednexus]

Bearings aren't too bad if it is the issue. SRKs are around $110 a side and are actually a Japanese NSK. You do need a 20 ton press and a puller to R&R them, but it's not really a "hard" job as the rear of the rig comes apart easily.

 

[PoindAxster]

Have you drop a jack under the rear diff and lifted the rear axle, then spun the wheel on each side?
Try that to see how much resistance and/or noise you get. Plus you may actually feel if there is any grinding with your and as you rotate the tire.

Just did this. Can feel more tension when spinning the passenger rear forward. Reverse doesn’t feel as hard to rotate. Driver’s side feels the same in forward and reverse and is less “tight” than the passenger side.

 

[r2m]

Just did this. Can feel more tension when spinning the passenger rear forward. Reverse doesn’t feel as hard to rotate. Driver’s side feels the same in forward and reverse and is less “tight” than the passenger side.

Now, while the wheel is in the air, pull the wheel and spin the brake rotor and see if that'll give you any more clues.

 

[Acrad]

If caliper is dragging there will be noticeable difference in temp. Run thermal infrared thermometer after a drive. I replaced my right rear caliper earlier this year at 93k miles on my '12

 

[PoindAxster]

If caliper is dragging there will be noticeable difference in temp. Run thermal infrared thermometer after a drive. I replaced my right rear caliper earlier this year at 93k miles on my '12

I've done it a few times now, and I'm getting a good 20-degree difference between the two rear calipers. Funny part is the higher temp is coming from the side I think is fine.

Will take both wheels off again for deeper inspection this weekend. Fortunately, it is scheduled to head to the shop for a Dirt King 2.0 kit and replacement rear spring - I broke a Dobinson's somehow. They are covering it under warranty.

 

[PoindAxster]

This continues to be an enigma. The shop and I both struggled to find any issues while the truck was on the lift. We were pressed for time to install the suspension, so we're going to revisit it later.

Found a decent-sized stick stuck in my underside from the last adventure. I'm racking my brain on whether the noise started after that romp. Since pulling the stick out and upgrading the suspension, the noise has been a little tougher to hear. Something is still putting up a little resistance, but I need to get an alignment, too.

Always doing too much for a simple diagnosis!

 

[JohnVee]

This continues to be an enigma. The shop and I both struggled to find any issues while the truck was on the lift. We were pressed for time to install the suspension, so we're going to revisit it later.

Found a decent-sized stick stuck in my underside from the last adventure. I'm racking my brain on whether the noise started after that romp. Since pulling the stick out and upgrading the suspension, the noise has been a little tougher to hear. Something is still putting up a little resistance, but I need to get an alignment, too.

Always doing too much for a simple diagnosis!

Did you ever resolve this issue?

The swerve test shows my driver front wheel bearings to be bad (roar at 38+mph, swerving left made it go away, swerving right made it worse). Replacing both front hub/WB assemblies did nothing. Replacing a slightly sticky driver front caliper did nothing. Replacing a passenger side CV axle did nothing (damaged by myself due to stupidity). All 4 wheels spin nicely when off the ground and give no noises. FWIW, the roaring noise sounds like it's coming from passenger rear (if I had to narrow it down) but it's more like everywhere. Definitely speed related, not engine rpm related.

I'm also now getting a burning grease smell on the driver side after driving for 5+ miles. It's only on the driver side and seems to NOT be coming from the front. It disappears within 20 seconds of stopping the truck so it's been hard to pinpoint.

I haven't looked into the e-brake issue mentioned above yet. 2013 GX460. 182,000 miles.