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V7 Classic rear wheel not engaging at all

frocker

frocker

Just got it firing!
Joined
Sep 20, 2018
Messages
7
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1
Location
UK
Bike: 2008 V7 Classic

Hi folks,
So I was riding along earlier today and experienced a sudden total loss of power to the rear wheel. I managed to coast to the side of the road and call a recovery truck.

The engine runs fine, but every gear behaves like it's in neutral. I can also hear a rattling coming from the rear of the block when the bike is rolled along.

Prior to this, the only issue I've been experiencing is the common shifting issues (difficulty finding neutral, clutch squeal etc.) when the engine is hot. But this was rectified by adjusting the cable.

My first thought is that the issues are probably related. Does this sound like it could be the failed clutch rod/throw out bearing? Or possibly the clutch itself is toast?

Going to start troubleshooting tomorrow, so if anyone could point me in the right direction, that would be hugely appreciated. I'm pretty inexperienced when it comes to working on Guzzis.

Cheers,
Felix
 
Not throw out bearing or push rod. The clutch would be engaged. Possible the clutch is toast, but unlikely. Could be failed rear end from lack of oil, or broken drive shaft/u-joint, or failed gearbox shaft. Too many possibilities from the description.
 
If it isn't the gear linkage, it may be output or drive shaft spines. Put it in gear and push the bike. If you can't push it, the splines are ok. If you can, they are toast.
 
Cheers for the input guys, really helpful stuff. Seems I was totally barking up the wrong tree with the clutch.
Guess my best bet is to start at the final drive and work my way forward.
Will post an update with how I get on.
 
The first check might be to drain the rear drive box oil and see if there's any debris in it .
After that , rear wheel removal to get the drive box off and then inspect the input splines
and drive shaft splines . These are probably the easiest checks before going any deeper .
Peter
 
frocker said:
So I was riding along earlier today and experienced a sudden total loss of power to the rear wheel. I managed to coast to the side of the road and call a recovery truck.
Click to expand...
If momentum failed while riding, and the rear wheel still moves freely, I would suspect clutch failure based on your description. Most all other failure items would not allow it to roll, hence causing the rear wheel to lock at speed on you. How many km's do you have on your V7?
 
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Well, looks like I've found the offending part. Drive shaft is in really bad shape!

Seems pretty unusual for a bike with 20k miles on it. Admittedley this is the first time I've had the swingarm off to inspect, so there might be some routine maintenence job I've totally neglected to do? Guess this could also be a sign of water ingress into the bellows, I do ride through winter in England which means a lot of rain and a lot of grit.

Either way, I guess it's just a case of ordering a replacement and greasing the hell out of it before it goes in. Thanks again to everyone who offered advice!
 
That looks as if it's been stored under water.
Certainly no evidence of the drive shaft splines ever seeing grease.

Are you certain it's only done 20k miles?
 
Brian UK said:
That looks as if it's been stored under water.
Click to expand...
Funny, I was literally typing, looks like it lived at the bottom of a river bed. I don’t think I’ve ever seen one that bad.
Thanks for posting @frocker - always good to see and have documented here.
 
If it's anything like the rear drive boxes on the Le Mans 2 , then the answer is no . In 250,000 km
on mine the only lube that ever got on the splines came from my greasing them . Peter
 
DeadEye said:
So thinking of the drive box - I would imagine that the oil in that unit would be splashing everywhere- no ?
Click to expand...
The oil in the final drive box stays in the final drive box. The swingarm area where the driveshaft resides, between the final drive and the transmission, should be dry.
 
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