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Chaincase removal

Technical help for Series one, two and three Lambrettas. Models include the Li, Li Special, TV, SX, GP, Serveta and API/SIL models

Chaincase removal

Postby Danbretta » Sun Oct 25, 2020 7:10 pm

Any tips on removing a stubborn chaincase. I've tried pulling the clutch arm to help pop the case of with the clutch pressure to no avail.
Any of you guys know of a better technique.
Seems the gasket sealant is doing a good job at holding the case on. Just thought I'd ask before I get heavy handed with it.
My only thought is to run a bit of gasket sealant remover around the edge and hope that soaks down enough to relieve the adhesion.
Any tips.
Thanks in advance.
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Re: Chaincase removal

Postby Norrie Bodge » Sun Oct 25, 2020 7:28 pm

Danbretta wrote:Any tips on removing a stubborn chaincase. I've tried pulling the clutch arm to help pop the case of with the clutch pressure to no avail.
Any of you guys know of a better technique.
Seems the gasket sealant is doing a good job at holding the case on. Just thought I'd ask before I get heavy handed with it.
My only thought is to run a bit of gasket sealant remover around the edge and hope that soaks down enough to relieve the adhesion.
Any tips.
Thanks in advance.


Heat
Blow torch around the gasket areas it’ll pop off then
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Re: Chaincase removal

Postby Warkton Tornado No.1 » Sun Oct 25, 2020 9:13 pm

My advice would be to use two to four of the M6 fixing holes as extractor holes. You may need to remove some M6 studs to tap M8 (tap hole is theoretically Ø 6.8) but this method should work & not be in any way destructive...
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Re: Chaincase removal

Postby Fast n Furious » Sun Oct 25, 2020 10:33 pm

Have an assistant hold the clutch in whilst you tap the casing with a nylon mallet. This has always worked for me.
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Re: Chaincase removal

Postby Danbretta » Mon Oct 26, 2020 8:46 am

Thanks guys, I'll put all your advice to use and see if I can pop this chaincase off. I thought I'd get some advice before I go in too heavy and damage something. I dont remember it being this stubborn to take of previously, maybe I over did the sealant last time...
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Re: Chaincase removal

Postby bookertmgs1 » Mon Oct 26, 2020 9:59 am

Are you sure that you havent got a bent stud that is binding on the side case?
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Re: Chaincase removal

Postby Danbretta » Mon Oct 26, 2020 8:56 pm

I dont think so but I'll double check.
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Re: Chaincase removal

Postby Tractorman » Mon Oct 26, 2020 10:25 pm

bookertmgs1 wrote:Are you sure that you havent got a bent stud that is binding on the side case?


Or missed a nut!
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Re: Chaincase removal

Postby Danbretta » Tue Oct 27, 2020 6:11 pm

All nuts removed, that was the first thing I checked.

Draining the oil I found this piece on the magnet. Something has obviously failed. Not much to go on but does anyone recognise what this may have come off. Anything from the kickstart or chain? Once I get the chaincase off hopefully the broken part wont be to evasive.
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Re: Chaincase removal

Postby Danbretta » Tue Oct 27, 2020 6:12 pm

Another pic....
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Re: Chaincase removal

Postby Fast n Furious » Tue Oct 27, 2020 6:17 pm

new chain required.
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Re: Chaincase removal

Postby Danbretta » Tue Oct 27, 2020 8:22 pm

Hopefully this is a common failure and I'm not going to find more issues to the cause of this roller splitting.
What's a decent chain to go for? Are there ones to avoid?
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Re: Chaincase removal

Postby Toddy » Tue Oct 27, 2020 9:19 pm

Danbretta wrote:Hopefully this is a common failure and I'm not going to find more issues to the cause of this roller splitting.
What's a decent chain to go for? Are there ones to avoid?



IWIS are a good chain
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Re: Chaincase removal

Postby Fast n Furious » Wed Oct 28, 2020 12:44 am

and Rolon are the ones to avoid.
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Re: Chaincase removal

Postby Rich Oswald » Wed Oct 28, 2020 9:22 am

Toddy wrote:
Danbretta wrote:Hopefully this is a common failure and I'm not going to find more issues to the cause of this roller splitting.
What's a decent chain to go for? Are there ones to avoid?



IWIS are a good chain


+1
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Re: Chaincase removal

Postby Danbretta » Wed Oct 28, 2020 9:24 am

Thanks chaps, sounds like I'll be looking at an IWIS.
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