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Author Topic: Transmission problem!!  (Read 4327 times)

fbenach

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Transmission problem!!
« on: November 25, 2012, 08:03:52 PM »
Hey guys, me again...
Today I went for a 200km ride, and in the way back, in the last 30kms my transmission started to sound awful, like there was something spinning and cranking... no particular vibrations nor lack of power...

What I notice when I get home was that in neutral position and the clutch applied, the sound goes away as well as 2nd gear... but still, if I´m in neutral and start releasing the clutch, the bike runs like it was in gear!!!

What´s going on?? could it be my gears are not synchronized somehow???
We just finished a major job on the engine 2 weeks ago, where we replaced the crank... but, the failure started 300kms after the job...

I´m lost!!! any ideas???
Thanks in advance!!!


Offline Bob_Roller

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Re: Transmission problem!!
« Reply #1 on: November 25, 2012, 08:37:58 PM »
Possibly a clutch throw out bearing at the back of the transmission .
'81 R65
'82 R65 LS
'84 R65 LS
'87 Moto Guzzi V65 Lario
'02 R1150R
Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!

Offline montmil

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Re: Transmission problem!!
« Reply #2 on: November 25, 2012, 09:25:44 PM »
Quote
Possibly a clutch throw out bearing at the back of the transmission .

Not an uncommon issue. Fortunately, a fairly easy repair job and it won't burn down your wallet.
Monte Miller
Denton, TEXAS
1978 BMW R100S
1981 BMW R65
1983 BMW R65
1995 Triumph Trophy
1986 VW Cabriolet

fbenach

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Re: Transmission problem!!
« Reply #3 on: November 25, 2012, 09:53:52 PM »
Your words are like music to my ears!!!
Thanks guys!!

Offline montmil

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Re: Transmission problem!!
« Reply #4 on: November 26, 2012, 06:44:15 AM »
Quote
Your words are like music to my ears!!! Thanks guys!!

And worth exactly what you paid for 'em! ;D
Monte Miller
Denton, TEXAS
1978 BMW R100S
1981 BMW R65
1983 BMW R65
1995 Triumph Trophy
1986 VW Cabriolet

Offline Bob_Roller

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Re: Transmission problem!!
« Reply #5 on: November 26, 2012, 10:30:02 AM »
Well, that's a starting point !!!!!!!
'81 R65
'82 R65 LS
'84 R65 LS
'87 Moto Guzzi V65 Lario
'02 R1150R
Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!

tvrla

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Re: Transmission problem!!
« Reply #6 on: November 26, 2012, 03:32:16 PM »
If you haven't pulled the drain plug and checked out the magnet - now's an appropriate time. Anything more than soft fuzz is someting to worry about!

I wonder if there wasn't enough free play in the throwout system and it got over-worked?

fbenach

  • Guest
Re: Transmission problem!!
« Reply #7 on: November 26, 2012, 05:30:10 PM »
Quote
If you haven't pulled the drain plug and checked out the magnet - now's an appropriate time. Anything more than soft fuzz is someting to worry about!

I wonder if there wasn't enough free play in the throwout system and it got over-worked?

Magnet? Drain?? where??
Well I talked to the guys on the shop... the gear box was supposely untouched during the crank job... and my mechanic says it should be a bearing as Bob suggests...

Where should I be looking now?
Thanks!!

Offline montmil

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Re: Transmission problem!!
« Reply #8 on: November 26, 2012, 06:24:40 PM »
Transmission drain plug -most all have a magnet at the threaded end.

First check the throw out bearing as Bob suggested. It's right there at the end where the clutch pushrod enters the box. Going into the gear box without knowing for sure if anything has failed is going to cost you several hundred bucks.

That's if nothings wrong!
Monte Miller
Denton, TEXAS
1978 BMW R100S
1981 BMW R65
1983 BMW R65
1995 Triumph Trophy
1986 VW Cabriolet

fbenach

  • Guest
Re: Transmission problem!!
« Reply #9 on: November 26, 2012, 11:48:23 PM »
OK, tomorrow we will check that before opening the whole thing!!

Thank you again!!

Offline Lucky_Lou

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Re: Transmission problem!!
« Reply #10 on: November 27, 2012, 11:08:07 AM »
Quote
Hey guys, me again...
What I notice when I get home was that in neutral position and the clutch applied, the sound goes away as well as 2nd gear... but still, if I´m in neutral and start releasing the clutch, the bike runs like it was in gear!!!!!
? Are you saying that the bike is trying to drive in neutral, or just gettin the noise ? is so that may be a sign of a bigger problem
Lou
Ask questions later

fbenach

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Re: Transmission problem!!
« Reply #11 on: November 27, 2012, 06:53:24 PM »
Well yes, in neutral position, and clutch pressed, there is no noise, but if I release the clutch it starts making the sound and drive... it seems like somehow it is still in gear (1st or 2nd)... we dismantled the gearbox today, I´m waiting for a diagnosis tomorrow...
Let´s see what happens... I´m crossing my fingers for something not that big...

Offline Dave 2

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Re: Transmission problem!!
« Reply #12 on: November 27, 2012, 09:59:37 PM »
Have you checked your clutch Cable?

fbenach

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Re: Transmission problem!!
« Reply #13 on: December 06, 2012, 06:38:12 PM »
Well, we finished the job, thankfully it was nothing big, it was the white ring that is mounted on the shifting cam (lock ring??)...
We checked all the gears and they were perfect, though we changed all the bearings just in case...

Thanks for the help guys!!

tvrla

  • Guest
Re: Transmission problem!!
« Reply #14 on: December 07, 2012, 07:31:03 AM »
You left me in mystery on this one??? A picture would definitely help!

I don't recall seeing any white rings in the gearbox. Are you talking about the roller that rides on the shift cam?