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Post by snails on Oct 22, 2021 15:32:51 GMT
Hi
Not been on here for a while (as scooter has been running well), hope there is still some of you about!
Anyway, decided I couldnt put up with the engine leaking oil and to split it over the winter and replace the main gasket
Bit of a school boy question but what methods are there for removing the clutch basket and crank cog? Cant remember how I did this last time and I'm hoping someone has a better way that wiggle it, pull an hope for the best!
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Post by tzsteve on Oct 24, 2021 21:26:51 GMT
Hi mate glad the scooter was going well after your work on it,
I hope the barrel shortening we did gave it a bit of extra go,
Have a look at my thread on fitting a Hartz4. That will give you some tips from me
And ALSO some tips from others here
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Post by tzsteve on Oct 24, 2021 21:32:50 GMT
Oil leaks tend to be from the clutch actuating lever easy enough,
And also from the gear linkage .... That can be a bit more awkward as its held together with a taper pin,
Once these pins are in they can be an absolute sod to get out,
If it's the clutch bit that's leaking its replace the cover and mechanism.
If it's the gear linkage it's an 0 - ring in the case
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Post by snails on Oct 25, 2021 7:43:58 GMT
Yes, it runs like a dream to be honest. I cant say what it would have been like without the tuning work we did on it as I never had the chance to experience the scooter in standard form but im sure its much better. The only thing it lacks in compression to say my Lambretta 175 is top speed and that's down to the lesser cc. Getting to top speed its really nice. Probably my favourite scooter to drive of the 3 I own.
I'll have a look at the thread you recommend. I never could work out where the leak was coming from but initially I thought it was the clutch cover gasket area so I removed and reapplied that gasket with some gasket sealer and it seemed to get less. I did think it looked to be that area though so maybe I'll be lucky and its the lever. Only seems to leak once the scooter has been running if that's a clue pointing towards the clutch arm?
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Post by snails on Oct 28, 2021 7:45:17 GMT
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Post by gugne on Oct 28, 2021 8:23:22 GMT
Yes they are to stop leaks on the clutch arm. Same ones as on the gear selector arm. You could measure the current o-ring with a Vernier calliper to be sure.
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Post by henri on Oct 28, 2021 12:51:39 GMT
on the gear selector shaft ive been fitting 1st oversize as standard practice for a while ,ive found in the past if that doesnt cure the leak its worn shaft needing replacing as no oversize will cure .
on the clutch cover theres a o-ring below bottom bearing ,on long arm covers you release the spring an arm just slides out .hook old ring out an just replace ,then play the get all the roller bearings back in there place game .grease an patience is the trick there .H
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Post by tzsteve on Oct 29, 2021 16:53:52 GMT
Yep those loose rollers can be a pain, I use the blob of Vaseline it’s not quite as sticky as grease but you can use grease same as H, and I also use a long bamboo skewer to push them in place. I guess you could use any long thin object like a thin screw driver or similar weapon
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Post by tzsteve on Oct 29, 2021 17:01:45 GMT
The clue that it’s an o-ring that’s worn is that it happens after running , at rest all the oil settles in the bottom of the engine, when running the oil gets squashed between the gears and pushed sideways into the little oil channel in the clutch cover. it’s a similar effect with the gear linkage when running the oil gets splashed all over the inside of the case and has a chance with the help of gravity of finding its way to the gear linkage
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Post by snails on Nov 2, 2021 11:54:19 GMT
well I have ordered one of each over size from SIP and will put the engine back together (thankfully Ive not split it yet) and will work my way through the different sizes until hopefully it stops
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Post by snails on Mar 29, 2022 17:37:20 GMT
Well having replaced the o ring on the clutch arm and reassembled and put oil in its still leaking but I dont think its the clutch arm. Wish I hadnt been so lazy and progressed it a bit more during the winter  Anyway I can see oil on the gear change mechanism but also on the bottom of the case. If it was coming from the gear change wouldnt it head straight down rather than along the casing to the lower point? Assuming it is the gear selector shaft, how is that removed?  |
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Post by tzsteve on Mar 29, 2022 20:54:08 GMT
If it is the selector shaft it's an engine strip there is a taper pin holds the linkage together on the outside of the case this only comes out one way ( obvious really ) on the top of the case there is a bolt that holds the rest of the assembly in place.
It's gears out to get this far
There is an "0"ring inside the hole that the selector runs through
If you can live with the small drip of oil put the job off till you are doing other major work on the engine
putting too much gear oil in the case can make things worse only fill up till you see some oil coming out of the filler plug
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Post by snails on Mar 30, 2022 13:11:22 GMT
Thanks Steve. I think I may go down the path of living with it - although it will probably mean waiting at least a few years if not forever!
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Post by tzsteve on Mar 30, 2022 21:00:24 GMT
Ive done that in the past,
just park over a piece of rag
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Post by snails on Apr 8, 2022 12:12:30 GMT
When putting the engine back in, you leave the rear shock attached to the frame?
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Post by nickj on Apr 20, 2022 21:19:22 GMT
Yep …..just waggle it around on the top rubber mount to keep it out if the way
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