Hummin noise??

[NHVmaxpower]

Ok guys I am a bit stummped at my problem. If I am decelerating I get a awful huming noise from tranny if I go back n forth L to R zig zag down the road ..In the right up position NO noise if I pull the clutch in the noise is still there but NOT as noticeable. My tires are worn and need new ones this winter so I figured maybe tires?? but it would be there all the time right not only when a load on drive train. Is there a bearing that is common to go bad in tranny? Could it be wheel bearings,ujoint, ? Its more of a humming noise than a vibration but I feel it in my hanndlebars & foot pegs . Please help I dont want to do any damage not knowing what it could be . Maybe some test I could do that you know of? step by step to eliminate each thing? Thanks in advance..
Wayno:bang head:

 

[maxrom]

My language barrier :bang head:== wath meen TRANNY ?

Bike millage??
The humming sound as been approach in <the venturers> web site tech library. They notice an issue with the wheel spline and all parts around to be cleand and lube (garage will tell you <yes> but will thy do???).
In this meening; do your spline cleaned/lubed at every time you acces there.

And yes your way to tangle the bike left and right can notice a wheel bearing issue. If so; yamaha stock <koyo> bearing are an expensive SHIT.
They are standard size, so your local industrial dealer (as MOTION) will find you <timken, SKF, ......) cheaper and much more quality. (i`ve change rear wheel bearings last summer +or- 45$ or so, and verry easy to do)

unk:And by the way up in front == stearing neck bearing are thimken standard sizeunk:

 

[Rusty McNeil]

Excessive lash in rear end or middle gear??

The left right thing baffles me though. Sounds like a shell bearing. Need to get on center stand and play with it maybe.

Edit.... Wheel bearing! Not shell.

Damn auto correct.

 

[NHVmaxpower]

Excessive lash in rear end or middle gear??

The left right thing baffles me though. Sounds like a shell bearing. Need to get on center stand and play with it maybe.

How do I check & repair this?

My language barrier :bang head:== wath meen TRANNY ?

Bike millage??
The humming sound as been approach in <the venturers> web site tech library. They notice an issue with the wheel spline and all parts around to be cleand and lube (garage will tell you <yes> but will thy do???).
In this meening; do your spline cleaned/lubed at every time you acces there.

And yes your way to tangle the bike left and right can notice a wheel bearing issue. If so; yamaha stock <koyo> bearing are an expensive SHIT.
They are standard size, so your local industrial dealer (as MOTION) will find you <timken, SKF, ......) cheaper and much more quality. (i`ve change rear wheel bearings last summer +or- 45$ or so, and verry easy to do)

unk:And by the way up in front == stearing neck bearing are thimken standard sizeunk:

I have never had the rear wheel off maybe I should. The head bearings are smooth no play at all ,Heck I never have head wabble .

 

[sdt354]

How do I check & repair this?

You'll need some basic tools, a dial indicator and base. A homemade middle gear positive lock setup (I can get one to you). And some shims. I know you can do it. Or, road trip. Any excuse to see the Bro's and ride.
Steve-o

 

[NHVmaxpower]

Mileage just turned 50,000

 

[Rusty McNeil]

I've got a homemade middle gear lock for checking lash, if someone needs it let me know via pm.

It's really quite simple tho, just a piece of metal with a bolt hole in it.

 

[naughtyG]

Take off the rear wheel, remove the diff and check how tight the nut is where the driveshaft goes in. You never know, it may be as simple as that.

 

[NHVmaxpower]

Thanks everyone for all your suggestions . The issue is myn ujoint dry no grease in it. I am puting it back together untill I get one /There is no play that I can tell just not smooth rotating just metal to metal sound . Grrrrr

 

[[email protected]]

Thanks everyone for all your suggestions . The issue is myn ujoint dry no grease in it. I am puting it back together untill I get one /There is no play that I can tell just not smooth rotating just metal to metal sound . Grrrrr

Don't buy OEM, they are expensive. Here are some options that you can pick up at the autoparts store. Not sure about all the others but I know the spicer u joint does not have any holes drilled for grease fittings which will give you a stronger u joint.

If you insist on OEM you can use the part # off the body to source a replacement. It is a Koyo PN.

ManufacturerPart NumberAEC

1064​

Falcon

U392​

GMB

220-0028​

Neapco

1-0028​

Perfect Circle

1500​

Precision

392​

Rockford

K1500​

Spicer

5-1500X​

TRW

20128​

 

[NHVmaxpower]

Don't buy OEM, they are expensive. Here are some options that you can pick up at the autoparts store. Not sure about all the others but I know the spicer u joint does not have any holes drilled for grease fittings which will give you a stronger u joint.

If you insist on OEM you can use the part # off the body to source a replacement. It is a Koyo PN.


ManufacturerPart NumberAEC

1064​

Falcon

U392​

GMB

220-0028​

Neapco

1-0028​

Perfect Circle

1500​

Precision

392​

Rockford

K1500​

Spicer

5-1500X​

TRW

20128​

Thankls allot . I am getting a used one from a member w/ 20,000 miles I am going to drill n tapp a grease fitting into it I hope.

 

[sdt354]

Good info Mike, thanks much.
Wayne, I've got a used OEM for ya. I just took it off.
Steve-o

 

[Rusty McNeil]

Cool man, glad you found it!

If it was me I would not drill it for a grease fitting. There's not a lot of meat there and it'll weaken it. That's just one opinion tho and doesn't make it the right one.

You can disassemble it a pack it thoroughly and if the seals are good it should last a long time.

Was there grease slung inside your driveshaft tube from a seal failure ? Just curious.

 

[[email protected]]

Cool man, glad you found it!

If it was me I would not drill it for a grease fitting. There's not a lot of meat there and it'll weaken it. That's just one opinion tho and doesn't make it the right one.

You can disassemble it a pack it thoroughly and if the seals are good it should last a long time.

Was there grease slung inside your driveshaft tube from a seal failure ? Just curious.

I fully agree about the drilling. A failed u joint seems to be somewhat rare but if it does go out on you it can cause some damage. Don't ask how I know...

 

[sdt354]

Check out this location for a grease fitting if you must. I think it would be better than the casting to drill. They aren't expensive to buy aftermarket. Being able to greese it appeals to me though. Maybe a needle cup insteadof the fitting. A ppossible balance issue could result too, maybe.
Steve-o

 

[NHVmaxpower]

Check out this location for a grease fitting if you must. I think it would be better than the casting to drill. They aren't expensive to buy aftermarket. Being able to greese it appeals to me though. Maybe a needle cup insteadof the fitting. A ppossible balance issue could result too, maybe.
Steve-o

Is that the stock ujoint w/ a grease fitting?? I am waiting to hear from Sean about drilling in a grease fitting.

 

[[email protected]]

Is that the stock ujoint w/ a grease fitting?? I am waiting to hear from Sean about drilling in a grease fitting.

No, the u joint in that photo is made by precision P/N 392
http://www.venturers.org/Tech_Library/index.php?action=article&cat_id=003005&id=376

 

[NHVmaxpower]

No, the u joint in that photo is made by precision P/N 392
http://www.venturers.org/Tech_Library/index.php?action=article&cat_id=003005&id=376

Mike I didn't see that pic was from your link . Sean says no to drilling a grease fitting,I think in the cap is a good idea like the one in pic. Thanks for the info I saved the link for future referance .