Wildguzzi.com
General Category => General Discussion => Topic started by: dcdurst on July 13, 2020, 05:55:31 PM
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Hi there, this is my first post so be gentle : 1967 V700 barn find. Petty much everything there. Took it all the way down (did top end with pistons, valves, etc.) All back together and runs pretty good. The one thing I did not do was pull apart the transmission or clutch. Bike runs great but shifting is a real problem. Clutch seems to engage well. It goes into first gear pretty good but has some real issues down shifting and getting back to first. Lots of acrobatics, shifting up then down, clutch in, downshift, slowing letting out, etc. Sometimes can't get it back to first. I'm pretty good mechanically but out of my league here trying to troubleshoot. Any help would be greatly appreciated. Thanks.
(https://i.ibb.co/vPYDhHg/IMG-4962.jpg) (https://ibb.co/vPYDhHg)
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Unless the shift arm is interfering with the transmission case, the linkage is binding or something like that, I'm afraid there might not be much you can do externally - the transmission will likely need to come apart.
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I am with Charlie, it appears as though you are going to have the opportunity to get up close and personal with the Guzzi 4 speed! A very simple transmission indeed, but with a perplexing shift detent system if not familiar. I just went through my V700 4 speed in March and April. By the time I was satisfied with how it shifted on the bench I must have had it apart at least 30 times. Without Charlie's guidance I probably would still be at it! :bow:
There is help available here! We wont let you fail.
(https://i.postimg.cc/CLXJZqK5/IMG_6468.jpg) (https://postimg.cc/BX52ktHf)
(https://i.postimg.cc/NjBftN29/IMG_6804_(2).jpg) (https://postimg.cc/svHR94cs)
Welcome to WG and please introduce yourself.
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Charlie and Dave,
Wow, thanks so much for the replies. Looks like I'm pulling the motor! I'll follow up here with my progress.
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I prefer to leave the engine in the frame and remove the transmission only, but whatever works for you.
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Thank you Charlie. You can probably tell I'm still a little green regarding my rebuild. Hope you don't mind the questions: Would I need to pull the swing arm off to have enough room to slip the transmission off? If I can avoid taking the motor back out that would be great.
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Thank you Charlie. You can probably tell I'm still a little green regarding my rebuild. Hope you don't mind the questions: Would I need to pull the swing arm off to have enough room to slip the transmission off? If I can avoid taking the motor back out that would be great.
I remove the swingarm, although I've heard of folks just removing the pins and pulling it back, shocks and wheel, etc. still attached. Still quite a bit of stuff to remove either way. Battery, battery tray, airbox, exhaust, generator. Leave the front engine bolt in and tilt the engine forward to remove the transmission.
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Got it! Thanks so much Charlie.
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Good afternoon Gents (Dave and Charlie)
Well, the motor is out and transmission out as well. I'm sure I didn't follow protocol very well. Had trouble getting the tab washer off (still really don't know how it comes off)and just ended up pulling the entire guts out along with the cover. Obviously had a few things remain behind in the the body of the housing like the needle flat/thrust washer (?) and another just regular washer. I think I know where the needle thrust washer goes. Attaching pictures with this is. And of course I pulled the selector pawl gear out not knowing spring loaded parts would go flying. Which they did. Luckily I found everything except one of the pawl plungers but found one at Harpers Guzzi. Need some help on a few things: How do I get the tab washer off so that I can remove the cover and reassemble everything back in the larger transmission housing? I assume that's the best way but if not I would love guidance. My goal is to get that done and then work with it until I get it to ship better. Dave, I know you said you had to do this about 30 times until you were happy :) When I get there I'll come to you for advice. All parts and gears look good without much wear. Let me know if you see something different. Thanks for any help getting it back in. Thanks.
(https://i.ibb.co/RCfmj2v/IMG-4330.jpg) (https://ibb.co/RCfmj2v)
(https://i.ibb.co/HrnrfTr/IMG-5230.jpg) (https://ibb.co/HrnrfTr)
(https://i.ibb.co/44bTXGr/IMG-7694.jpg) (https://ibb.co/44bTXGr)
(https://i.ibb.co/Gd1tqCw/IMG-1454.jpg) (https://ibb.co/Gd1tqCw)
(https://i.ibb.co/3CsBZKZ/Screen-Shot-2020-08-13-at-2-39-12-PM.png) (https://ibb.co/3CsBZKZ)
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Have you looked at Gregory Benders fabulous loopframe Guzzi website "This Old Tractor?" Everything in the world you need to know about a Loopframe Guzzi is in there, anything else, Charlie will tell you! :grin:
I followed a tutorial on there when I went through and shimmed the 5 speed on my eldorado. It was very helpful. There may be similar for the 4 speed. They really are simple gearboxes.
If you have not done it already, take a look at This Old Tractor.
BTW, Great looking 700 you have!
Good Luck,
Rick.
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Good afternoon Gents (Dave and Charlie)
Well, the motor is out and transmission out as well. I'm sure I didn't follow protocol very well. Had trouble getting the tab washer off (still really don't know how it comes off)and just ended up pulling the entire guts out along with the cover. Obviously had a few things remain behind in the the body of the housing like the needle flat/thrust washer (?) and another just regular washer. I think I know where the needle thrust washer goes. Attaching pictures with this is. And of course I pulled the selector pawl gear out not knowing spring loaded parts would go flying. Which they did. Luckily I found everything except one of the pawl plungers but found one at Harpers Guzzi. Need some help on a few things: How do I get the tab washer off so that I can remove the cover and reassemble everything back in the larger transmission housing? I assume that's the best way but if not I would love guidance. My goal is to get that done and then work with it until I get it to ship better. Dave, I know you said you had to do this about 30 times until you were happy :) When I get there I'll come to you for advice. All parts and gears look good without much wear. Let me know if you see something different. Thanks for any help getting it back in. Thanks.
(https://i.ibb.co/RCfmj2v/IMG-4330.jpg) (https://ibb.co/RCfmj2v)
(https://i.ibb.co/HrnrfTr/IMG-5230.jpg) (https://ibb.co/HrnrfTr)
(https://i.ibb.co/44bTXGr/IMG-7694.jpg) (https://ibb.co/44bTXGr)
(https://i.ibb.co/Gd1tqCw/IMG-1454.jpg) (https://ibb.co/Gd1tqCw)
(https://i.ibb.co/3CsBZKZ/Screen-Shot-2020-08-13-at-2-39-12-PM.png) (https://ibb.co/3CsBZKZ)
The "star" tab washer should just pull straight off, but that one looks like it has spun on the shaft and is likely deformed, so might need some "convincing".
The needle thrust washer is part of the clutch throw-out mechanism.
The shaft the shift forks slide on looks quite worn.