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Clunk discussion

O

oneal

Active member
Jun 17, 2024
192
93
Manny of us now have the "clunking" noise in the rear of our 1500. It is mentioned in many places on this forum with numerous different thoughts of where it originates and exactly what makes this annoying noise.
Coincidentally Polaris released a video on how to remove an axle and specific instructions on locking the outer spline with loctite.
Some have said checking the factory torque specs stopped theirs and others felt new CV's was the cure. Some feel their differential is disintegrating.
For me it's a real hassle to get mine to a dealership so I am hoping for a concrete resolution before I haul it in.
Please post your data with the following ;
Hours, miles, kmh's
Which side, both
Four or six seater
Low speed, high speed, or doesn't matter
Loaded, unloaded, doesn't matter
Is it simply a rotational noise or when you accelerate and let off
Any oil changes in the diff, any metal in the oil
What attempts have been made so far to resolve and did it work?
 
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500 miles
95 HRs
Clearly left side
6 seater
I only hear it at low speed but I have hearing loss
100% a rotational noise, gassing and letting off does nothing
I torqued the axle nut to the 88lbs and for two days thought that was the cure but noise is now louder and more constant
I jacked both rear tires off the ground, all cv's are tight
Had my wife start the engine and place it in gear with the tires elevated, no noise
I took temp readings on the diff, 150 but the exhaust is pretty close
 
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1750 miles and have a few suspension squeaks but no clunking going on.
 
oneal said:
500 miles
95 HRs
Clearly left side
6 seater
I only hear it at low speed but I have hearing loss
100% a rotational noise, gassing and letting off does nothing
I torqued the axle nut to the 88lbs and for two days thought that was the cure but noise is now louder and more constant
I jacked both rear tires off the ground, all cv's are tight
Had my wife start the engine and place it in gear with the tires elevated, no noise
I took temp readings on the diff, 150 but the exhaust is pretty close
Click to expand...
Mines pretty much the Same
 
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I have no clunk but am taking to dealer to change rear diff fluid. (Just in case there is a warrenty issue). Is the problem area in the rear differential gear case or the axle hub by the wheel?
 
Fireguy said:
My “clunk” sounds like it’s coming from the front. It’s at the dealer now and I’ll update on what they find and do!
Click to expand...
Interesting, the noise from my front is caused by suspension flex. It is loud but clearly it is when one wheel gets compressed. I believe it to be the sway bar joints.
 
Same problem here @ only 200 hrs. Clunking sounds like differential or transmission. Local dealer has no idea what the problem is but to ask around (which is typical). You know, instead of dropping 50k on an ultimate, I should have bought a new Tacoma and cut half the bed off for 42k. Surely they could identify and fix the problem.
 
My clunk sounds like a beer can rolling around in the box. My rear axles were changed and that did not solve my problem.
 
I've had/have 3 noises on my machine.
  • I had a clunking noise when let off the gas at a steady speed like 25 mph. Took it to the dealer and they tightened the rear axle nuts. They said that had several machines come in with the same issue. The noise is gone.
  • I also have a rotating noise when letting off the gas (it is more prominent when letting off the gas when going down hill and coasting). I talked to the dealer about it, they said they had one other machine with the same sound but couldn't pin point it. I am guessing the only way they will find anything is when something breaks. I am not quite sure where it is coming from other than from the drivetrain.
  • The 3rd noise I have has always been there. It is a snapping noise when the suspension in under compression (as described by @oneal). I recorded it this past weekend when riding rocky trails. The video was too long to upload to the site so I uploaded it to dropbox.
 
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bbieb said:
I've had/have 3 noises on my machine.
  • I had a clunking noise when let off the gas at a steady speed like 25 mph. Took it to the dealer and they tightened the rear axle nuts. They said that had several machines come in with the same issue. The noise is gone.
  • I also have a rotating noise when letting off the gas (it is more prominent when letting off the gas when going down hill and coasting). I talked to the dealer about it, they said they had one other machine with the same sound but couldn't pin point it. I am guessing the only way they will find anything is when something breaks. I am not quite sure where it is coming from other than from the drivetrain.
  • The 3rd noise I have has always been there. It is a snapping noise when the suspension in under compression (as described by @oneal). I recorded it this past weekend when riding rocky trails. The video was too long to upload to the site so I uploaded it to dropbox.
Click to expand...
I couldn't load the video bbieb but by your description is the same as mine
 
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Clubin said:
My clunk sounds like a beer can rolling around in the box. My rear axles were changed and that did not solve my problem.
Click to expand...
oneal said:
12 or 16 oz ??
That's actually a pretty good description
Click to expand...
For a minute I thought I was also being inflicted with the dreaded "axle clunk" then I realized I the 12-pak broke and there really were beer cans rolling around my bed.
 
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