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Problem transmission..

  • Thread starter Thread starter SuzukiGS
  • Start date Start date
S

SuzukiGS

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So on my way home today, right as I entered my neighborhood (luckily) my transmission made a large grinding noise then what sounded as if something snapped, and then no more go.. My chain is really loose now but not broken.. and I have absolutely no tension on my clutch anymore.. So.. anyone have any guesses on what happen? And where do I start? How do I get into the tranny?
 
Is that a hard fix? And thats the cover on the left side right? Where the clutch cable comes in?
 
Depends on how much damage you did

Left side cover over the chain - remove it and take pics
 
It was nothing with the sprocket.. Is it possible to access the whole tranny without removing the engine??
 
SuzukiGS said:
It was nothing with the sprocket.. Is it possible to access the whole tranny without removing the engine??
Click to expand...
No, you have to split the cases
Now take off the clutch cover and have a look there. It's possible the nut for the clutch hub came off.
 
If the nut is still attached, things will go down hill from here, as in output shaft faiure. I'd bet on hub nut falling off.
 
Well guys, it was very simple really what happened.. The sprocket cover, which also has the clutch cable running through it, broke on the upper bolt, allowing too much free play in the clutch and there for no release for it.. The Snap I head was the sprocket cover breaking, the engine died because it ended up just dumping the clutch, and the chain just popped off. So I need a new sprocket cover and thats all. I'm very happy with that.

Just always remember to check the simple things first.. I had half the bike torn apart before I had the epiphany and realized what happened.

Anyone have a sprocket cover for a 78 GS750EC??
 
SuzukiGS said:
Well guys, it was very simple really what happened.. The sprocket cover, which also has the clutch cable running through it, broke on the upper bolt, allowing too much free play in the clutch and there for no release for it.. The Snap I head was the sprocket cover breaking, the engine died because it ended up just dumping the clutch, and the chain just popped off. So I need a new sprocket cover and thats all. I'm very happy with that.

Just always remember to check the simple things first.. I had half the bike torn apart before I had the epiphany and realized what happened.

Anyone have a sprocket cover for a 78 GS750EC??
Click to expand...
and most likely a new chain and sprockets if it was loose enough to pop off then it needs to be replaced so you may as well do sprockets at the same time
if that chain broke then it would take out your cases and god knows what else
keeping your chain properly maintained and tensioned is safer for you and everyone else
 
Having a bad chain will cause the exact problem you are having. DO NOT fix it without replacing the chain. Check to see if the clutch push rod is bent and also replace the push rod seal...
Your lucky your not looking for a new engine
 
Last edited:
Well guys, I got a new cover and it fixed my clutch problem, but I still have no forward movement.. So with the transmission being shot, or at least unusable right now, I've decided i'm going to put it up for sale.. What would be a decent price for it? Engine runs and starts flawlessly, tires have decent thread, in i'd say a 7/10 overall condition besides the transmission.. I'll get pics asap, but just trying to get an idea now..
 
i'm about 100% sure you don't have a bad transmission.
you can't break those bikes with a hammer.
sell it if you want but those transmissions don't give up the ghost even with a turbo added.
if the worm gear on the new sprocket cover is adjusted wrong(to much pre-load)...
the bike will not pull its self.
 
the sprocket cover has a worm gear with a lock nut and a pre-load adjuster.
if the pre-load is to tight then the clutch pack will not lock up...it will slip like the clutch is pulled in.
no forward motion.
do you know the adjuster i'm speaking of?
 
the sprocket cover where the cable goes into it.
the cable goes to a bell crank...that part is connected to the worm adjuster i'm speaking of.
this adjuster is behind a small cover attached to the sprocket cover.
left side of bike.
the cover that goes over the front sprocket.
 
Are you able to take a picture of it? i've been up for the last 32 hours so i may be just stupid or just uber tired.. Are you talking about where the cable goes onto the little are guy in the cover and the bolt with like a flat head spot on it and a nut/washer??
 
thats it.
i don't have a part to take a picture of.
get some sleep and then loosen that nut and run the screw adjuster out a few turns, put the bike in gear and push it a little and see if it tries to turn the engine over.
if that screw adjuster has pressure on it the clutch won't lock up...
the correct adjustment is to turn the screw in till it lightly touches and then back it out 1/2-1 turn and then jam the nut down.
you will have to readjust the clutch cable after this adjustment.
 
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