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06-24-2020, 05:41 PM
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#1 |
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Not Yet Wild
Join Date: May 2020
Posts: 8
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What Is This Noise??
Can anyone help me determine what this noise is?
https://www.youtube.com/watch?v=_NhVIkuPCbc https://www.youtube.com/watch?v=0-_Kpyi_zbs |
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06-24-2020, 07:01 PM
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#2 |
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Gone Wild
Join Date: Jun 2016
Posts: 180
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Re: What Is This Noise??
Sounds like brush gear to me
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06-24-2020, 07:40 PM
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#3 | |
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Not Yet Wild
Join Date: May 2020
Posts: 8
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Re: What Is This Noise??
Quote:
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06-25-2020, 02:48 PM
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#4 |
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Not Yet Wild
Join Date: May 2020
Posts: 8
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Re: What Is This Noise??
Dropped the rear end and opened it up... everything does seem tight, nothing obvious jumps out... but do have a few questions.
1. Input shaft - the pic below is the input shaft on the differential side. The splines look worn but they do not look stripped out. Is this normal for 30 years of use? 2. The motor - I removed the motor and noticed the rotor has a little side to side play / slop in it. This is observed while disconnected from the input shaft so it is only supported by the bearing on motor. Is it normal for the motor to have a little slop or play? |
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06-25-2020, 03:24 PM
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#5 |
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Gone Wild
Join Date: Jun 2016
Posts: 180
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Re: What Is This Noise??
If your motor is DC then it has brushes and a commutator turning the motor...it could also be a bearing on the motor...if it is a DC motor ..remove cover plate and have a look inside to inspect brushes....carbon "things" on a spring touching copper commutator...Google DC motor brushes
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06-25-2020, 04:18 PM
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#6 |
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Not Yet Wild
Join Date: May 2020
Posts: 8
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Re: What Is This Noise??
Thanks! Yes, I'm familiar with motor brushes.. I was not familiar with a brush "gear" though.
Brushes are all fine. |
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06-25-2020, 09:02 PM
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#7 |
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Not Yet Wild
Join Date: Mar 2020
Posts: 38
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Re: What Is This Noise??
It makes the noise mainly when accelerating, or at steady state throttle?
And I'm sure smarter guys will chime in, but those splines look done. were there any metal chips in the area when you pulled the motor off? |
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06-26-2020, 03:16 PM
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#8 |
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Gone Wild
Join Date: Jun 2016
Posts: 180
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Re: What Is This Noise??
Brush gear is a general term for the total brush assembly...nothing to do with a "gear"
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06-26-2020, 04:19 PM
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#9 |
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Over This Interview Is...
Join Date: Jun 2012
Location: AZ
Posts: 17,449
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Re: What Is This Noise??
That input shaft, and probably worn out motor coupler (engages the shaft) are the source of noise. Its worn really bad.
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06-26-2020, 04:50 PM
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#10 |
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Happy Carting
 Join Date: Dec 2007
Location: Southern California
Posts: 73,408
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Re: What Is This Noise??
 really bad |
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