Author Topic: V7 Sport spline service (Read 2090 times)

smross · « **on:** April 27, 2020, 07:53:59 PM »

I'm in the process of resuscitating a '73 V7 Sport that hasn't been run in years. My question concerns spline servicing. Specifically, which splines should I lubricate? I've read that the rear end should be done. Should the drive shaft itself be lubed? If so, do I need to remove the swing arm to access it or should it pull straight out? Apologies for all the questions at once; just trying to get educated.
Thanks in advance.
Best,
Steve Ross

Perazzimx14 · « **Reply #1 on:** April 27, 2020, 08:17:52 PM »

Its 47 years old. Pull everything apart. Clean inspect replace whats needed/if needed to be replaced. Lube what needs to be lubed then reassemble. also a great time to check service the pivot bearings. At almost 5 decades old assume nothing.

moto-uno · « **Reply #2 on:** April 27, 2020, 09:56:39 PM »

^ Damned hard to argue that remark

. Peter

smross · « **Reply #3 on:** April 28, 2020, 12:15:27 AM »

I agree; it is excellent advice and that’s what I’m going to do. Thanks.

organfixsing · « **Reply #4 on:** April 28, 2020, 01:11:39 AM »

AFAIK the splines should be lubricated with a high percentage Molybdenum grease. The only place I have been able to get this is at a shop that specializes in air rifles. The stuff I got was 73% MS2 (as Molybdenum Disulphide is commonly referred to).
This grease is particularly stiff and I think would not fling off.
Cheers
Brian

Muzz · « **Reply #5 on:** April 28, 2020, 03:24:52 AM »

I suspect the air rifle grease would be much the same as the CV grease I use. Loaded with moly and designed to take a load. I get mine from the local automotive shop, but that may be different in other places.

Dave Swanson · « **Reply #6 on:** April 28, 2020, 05:35:31 AM »

Stickiest stuff I have found.

cliffrod · « **Reply #7 on:** April 28, 2020, 06:59:22 AM »

Depending upon how deep your resuscitation is- I came to regret not cleaning the sludge trap in my V7 Sport when I replaced the cylinders & pistons.

It was great for a while. then the honeymoon ended...

smross · « **Reply #8 on:** April 28, 2020, 09:08:22 AM »

OMG, Cliffrod

! Talk about, "while you're in there...!" Nah, I'll probably live to regret saying this but I'm not prepared to go THAT far into the resuscitation. The bike doesn't have a lot of miles on it so I'm confident in leaving the sludge traps alone. The only reason I installed the Gilardonis was that a friend had gotten rid of his Sport and he had the new pistons/cylinders sitting in the box. He sold them to me at a fire-sale price and I figured that using them would eliminate the worry of the chrome bores flaking, etc.
I'll probably go with the Wurth SIG 3000 grease. I've read great things about it and Wurth doesn't make junk.
Thanks for all the great responses; you guys have been great. I'm sure I'll have more questions as I delve deeper into this project.
Best,
Steve Ross

jwinwi · « **Reply #9 on:** April 28, 2020, 10:20:06 AM »

Of the bike.

smross · « **Reply #10 on:** April 28, 2020, 11:31:49 AM »

jwinwi · « **Reply #11 on:** April 28, 2020, 12:08:19 PM »

moto-uno · « **Reply #12 on:** April 28, 2020, 01:01:22 PM »

^+1

Dave Swanson · « **Reply #13 on:** April 28, 2020, 01:13:08 PM »

Looks like a winner

smross · « **Reply #14 on:** May 04, 2020, 01:45:57 PM »

I finally got around to pulling the rear drive on my V7 Sport and getting a look at all the splines. Photos are below. I didn't so much as touch them. Everything is as it was as I pulled things apart. The splines look good to me. My other observation is everything is as dry as a bone. My question is: a friend who's a BMW tech. gave me some factory BMW spline grease. Will that suffice in the Guzzi or should I get the Wurth grease? I also welcome comments on the splines (but not my photography!).
Thanks.
Best,
Steve ross

Muzz · « **Reply #15 on:** May 04, 2020, 04:45:28 PM »

Cheap is good, free is better.

I used to sell Wurth's stuff (but not their grease). Good but expensive.

I see no reason why the BMW stuff would not be as good.

pehayes · « **Reply #16 on:** May 04, 2020, 05:11:57 PM »

Someone here recently tipped me off to nautical outdrive spline grease by SIERRA and sold through West Marine. I'm currently using that and we'll see how it goes. I totally ate up an EV final drive input spline at 100K miles. And that with regular lubrication using a variety of greases.

Your stuff looks almost new by comparison. Lube and ride.

Patrick Hayes
Fremont CA

Chuck in Indiana · « **Reply #17 on:** May 04, 2020, 06:03:32 PM »

Hoo Wee.. you have yourself a *nice* project, there. The splines look great. I'd get rid of the rust, then use your spooge of choice for lube. I, personally, am a fan of Wurth. Other's MMV.

John A · « **Reply #18 on:** May 04, 2020, 06:29:54 PM »

After I degrease the splines , I use a spray moly that dries . Over the dry film lube I started useing Wurth, so far it stays where I put it.

BRG-BIRD · « **Reply #19 on:** May 04, 2020, 08:23:54 PM »

Quote from: smross on April 28, 2020, 11:31:49 AM

We have the same roller seat lol

Nice bike

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Author Topic: V7 Sport spline service (Read 2090 times)

jwinwi

jwinwi