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scooter
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« on: April 11, 2010, 06:57:42 PM » |
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I have a very slight growling noise comming from the rear end. Can only hear it when I slow to a stop or pull in the clutch and coast.
Here is the backround. I replaced both rear bearings with All Balls bearings. The old bearings WERE shot. After the bearing replacement I have this faint grumble.
I thought it was a bad set of bearings so I put in another new set. I still have the same exact noise. I double checked everything, axle torque, sleve inbetween bearings, did all spline lub and O rings.
I have one question. When I put the wheel back on the final drive could I have bumped the conical shaped tube that sticks out from the inside of the final drive? Does that piece come out or move?
The bike has 8k easy miles. Does anyone know what this grumbling noise might be? I have had it apart twice and can't figure it out.
Thank you very much for ant advice.
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« Last Edit: April 11, 2010, 07:00:30 PM by scooter »
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97 Valkyrie standard
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Rio Wil
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« Reply #1 on: April 11, 2010, 07:26:37 PM » |
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You replaced the rear bearings because they were shot, this doesn't say whether they were noisy and possibly covering up the growling that was coming from somewhere else.
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scooter
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« Reply #2 on: April 11, 2010, 07:40:03 PM » |
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Yes, the bad bearings were VERY noisy. A different noise than I am hearing now.
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97 Valkyrie standard
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sandy
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« Reply #3 on: April 11, 2010, 08:33:56 PM » |
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Yes, that tube in the drive unit is not attached. It can be moved, but when the axle goes in and gets torqued, it straightens out. My advise is to check the U joint.
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R J
Member
Posts: 13380
DS-0009 ...... # 173
Des Moines, IA
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« Reply #4 on: April 11, 2010, 08:41:49 PM » |
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These bearings you put in.
Are they sealed bearings or have to be greased?
Sounds like it might be a dry bearing.
Why did you change to this All Ball bearing or what ever it was you called it?
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44 Harley ServiCar   |
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Rio Wil
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« Reply #5 on: April 11, 2010, 09:30:38 PM » |
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I think "All Balls" is his bearing supplier....
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Valkflyer
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« Reply #6 on: April 12, 2010, 01:03:59 AM » |
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Since I'm relatively new to the site I'm sure I don't have much credibility, but here's my two cents for what it's worth.
Using a lift or stand raise your bike so that your rear wheel is off the ground. Follow this by then raising the swing arm to a near level position, and then placing a jack stand under one of the arms for support. Double check to make sure the bike and stand are secure and will not move.
Next, start the engine and bring it to idle. Using your right hand place the bike in 1st gear and then release the clutch slowly. This will allow your transmission, yoke, and drive to rotate at a slow enough rate so that you can focus more closely on the location of the noise.
(Note: when placing the bike in gear, even with the clutch pulled in you may begin to get rotation from the tranny, again release the clutch slowly for a smooth transition to rotation.
You can also do this with your wheel off, which will help rule out the wheel bearings. My guess is that Sandy's comment about checking the yoke is a good one. In addition, you can also pull back on that rubber boot near the yoke and look for bearing dust, it would be the end closes the swing arm tube and not the tranny, if you see it you've most likely found the issue.
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« Last Edit: April 12, 2010, 01:24:20 AM by Valkflyer »
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scooter
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« Reply #7 on: April 12, 2010, 04:24:00 AM » |
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"All Balls" is a brand of bearings. Does anyone know if this brand of bearings are good or are there better bearings out there? The bearings are sealed and the noise does sound like a bad bearing. Seems odd because I changed them twice, but I suppose it could happen.
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97 Valkyrie standard
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Chrisj CMA
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« Reply #8 on: April 12, 2010, 04:38:28 AM » |
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In all that removing did you inspect the drive shaft and lube the pinion cup?
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« Last Edit: April 12, 2010, 04:44:05 AM by Chrisj CMA CR3M »
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N0tac0p
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« Reply #9 on: April 12, 2010, 05:12:48 AM » |
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ummmmm, i just got a new tire so I did the rear wheel lube on mine (did not drop the pumpkin nor shaft). but what is this pinion cup lubing?? did i miss something? thx
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Chrisj CMA
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« Reply #10 on: April 12, 2010, 05:18:14 AM » |
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ummmmm, i just got a new tire so I did the rear wheel lube on mine (did not drop the pumpkin nor shaft). but what is this pinion cup lubing?? did i miss something? thx
Everytime the rear wheel comes off (like tire changes) You should pull the pumpkin (final drive) off and the drive shaft will be attached. Pull the drive shaft out of the pumkin and youre looking in the pinion cup. Needs light moly grease in there and also on the motor end of the drive shaft. You have to loosen the 4 bolts holding the pumkin on anyways for proper spline alignment so why not take the extra 5 minutes to take a look. |
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« Last Edit: April 12, 2010, 05:20:41 AM by Chrisj CMA CR3M »
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MP
Member
Posts: 5532
1997 Std Valkyrie and 2001 red/blk I/S w/sidecar
North Dakota
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« Reply #11 on: April 12, 2010, 05:20:02 AM » |
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Oh Ooh! You should have dropped the pumpkin, pulled the driveshaft out of it, checked, cleaned, and relubed the splines in there. VERY important to do. You need to do it NOW.
Check Shoptalk for directions and pics.
MP
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 "Ridin' with Cycho" |
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N0tac0p
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« Reply #12 on: April 12, 2010, 05:24:11 AM » |
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I did all that the last tire change, you need to do it every one? what is the pnion cup? where the shaft settle into the pumpkin?
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MP
Member
Posts: 5532
1997 Std Valkyrie and 2001 red/blk I/S w/sidecar
North Dakota
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« Reply #13 on: April 12, 2010, 05:25:22 AM » |
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Yes.
It should be done at about 10,000 miles, about every MC tire change.
MP
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"Ridin' with Cycho" |
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Chrisj CMA
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« Reply #14 on: April 12, 2010, 05:28:05 AM » |
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I did all that the last tire change, you need to do it every one? what is the pnion cup? where the shaft settle into the pumpkin?
Did you at least loosen the final drive mounting bolts for axle nut torquing and then retighten them, or did you just leave it alone..........if you didnt loosen them, and you have put some miles on, it may be too late, if you havent rode any yet....Id redo it |
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N0tac0p
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« Reply #15 on: April 12, 2010, 06:31:00 AM » |
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always tighten the shaft bolts last
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Ricky-D
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« Reply #16 on: April 12, 2010, 06:49:08 AM » |
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Hey!!!!
The motorcycle has less than 10,000 miles.
It's still new and not even close to being "run in".
To think that both wheel bearings have gone bad in that short of a time period is unusual to say the least.
The only way to my thinking that both wheel bearings could have gone bad is maybe the bike was submerged in water for a time! Fine! You suggest another reason.
Nothing has been mentioned about lubricant in the pumpkin. I would think that should be the first thing to check and insure everything is fine.
Other than that, my feeling is there is an over sensitivity to what's going on.
You would think that replacing the wheel bearings would educate some in learning what's going on although I haven't read anything about insuring proper reassembly with all the parts in the correct order and no mention about torque on the axle nut.
Sounds to me much ado about nothing.
I suggest leaving it all alone and riding it. The bike will not let you down, it's only got 9,000 or so miles on it. It will certainly become obvious what the problem is if you continue to ride.
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2000_Valkyrie_Interstate
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Chrisj CMA
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« Reply #17 on: April 12, 2010, 07:27:16 AM » |
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if there really is an unusal noise. something is causin it.......find it.
Easy stuff:
plastic ring around pumpkin misaligned can rub, cause strange noise
brake pads/dirt/springs
Tire (pressure or cupping)
Next:
Lubes and oils in the rear
proper assembly (sequence/alignment)
Worst thing.......it is possible to have a bad bearing cup and the wheel bearing wont sit still. Very unusual in a bike as young unless maybe it was recently caused by all the bearing r/r
If you take everything apart, clean and lube, and it all looks good. And then you put it all together right and is still makes noise, I would try finding a different wheel to try swapping. If the noise is still there.....then ride it until is dies
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