I just bought a 1984 shadow vt700. The bike rode fine the first time I took it out, but then started developing some issues. The clutch suddenly was not
engaging and the engine would rev up in first gear and barely move. I bled the clutch and it worked fine again. I drove it for some 20 miles, stopped in at a
store and the clutch was back to its former state of not working correctly. I got it home and bled the lines again (I did not see air come out either time I
bled the line) and it worked fine again. Could this be a master cylinder problem. I have minimal technical know-how but can competently fix minor problems; I
just don't know what this problem could be.
0 Kudo
clutch issues
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 natispotatis |
clutch issues |
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Posts: 3 04/30/08 4:04 PM |
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bamaTrider |
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HSATF 1st Officer
Posts: 3747 04/30/08 8:30 PM |
A bad or leaking clutch master would cause it to stay engaged.....not disengaged. The fact that it improved after bleeding is baffling to me because it should
not have had any effect on the engaging part of it. Unless of course this down time allowed it to cool off enough to gain grip. I suspect that you have worn
clutch discs, but before you go any further, you need to determine what oil the previous owner used in it. If oil that has friction modifiers in it was used,
then this can cause slippage. Changing the oil to one that is approved for a wet clutch may be all that is needed. How many miles are on the bike?
Stan
"We are different - yet we are the
same"
2004 GL1800 Goldwing (Titanium) 1999 Ace Tourer (Silver over Black) |
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natispotatis |
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HSATF Member
Posts: 3 04/30/08 11:46 PM |
The gears are actually engaging, but they are slipping. The bike has momentum but there is serious slipping. It almost feels like there is a 50-50 chance
that the clutch will work properly when I start it. Sometimes it works great, sometimes not. The bike has 40,000 miles on it and the previous owner claims to
have taken good care of the bike (although it sat for almost two years). If I have worn clutch disks, could this problem be on and off like this? I'm not
actually sure that bleeding the line had anything to do with fixing it; it almost seems like a coincidence. Do you know of any tests I can do to figure this
out? Your interest is much appreciated. I am really anticipating getting this thing on the road. By the way when it did work today, I was driving it around
for about 20 minutes straight with no problems. It was only when I restarted it that the problem arose again. I proceeded to bleed the line again and then
drove it into the garage in working order. Again, thanks.
nate |
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bamaTrider |
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HSATF 1st Officer
Posts: 3747 05/01/08 10:12 PM |
Kind of sounds like the slave cylinder is binding on the return from disengage and not letting the discs make solid contact. Bleeding it frees it up enough to
get it working again for a while. One things for sure, if you continue to ride it very much with it slipping, then you will need new disc before too long.
Stan
"We are different - yet we are the
same"
2004 GL1800 Goldwing (Titanium) 1999 Ace Tourer (Silver over Black) |
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