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Engine gearbox removal model 50

Submitted by richard_whitfield1 on Monday, 9 June, 2025 - 20:26
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Hi all
I have a 1959 model 50 wideline.  I am in the process of replacing the gearbox.  I have worked out that I will need to remove the engine and gearbox as one.  I do not want to strip the engine as it is running well.  

Will I be able to remove the engine and gearbox from the frame without removing the cylinder head? 

which is the best side to remove them from, on searching the site it looks like it is best to slide them out on the right side, is this correct for a wideline?  

do I have to remove the main stand?

any advice will be greatly appreciated as it looks like a complicated process.  

I have stripped the inner and out primary chain cases already and the engine sprocket is off!  

I have searched the site and not found much info on this process so far. 

thanks in advance for any help. 

Submitted by richard_whitfield1 on Tuesday, 10 June, 2025 - 18:41

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Further to my earlier post, I think. Have worked out that I will need to remove the main stand as it is attached to the engine plates.  

I am continuing to remove  the battery box and oil tank and hopefully I will be able to see a bit better how I should continue.  

The gearbox looks like there may be room to take it out without physical removing the engine but not sure.  

Looks like the left hand side might be the best side to remove engine gearbox if gearbox will not come out on its own.  

suppose I should just "do it" and see what happens. 

Submitted by richard_whitfield1 on Thursday, 12 June, 2025 - 08:15

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Of course while I am about to just do it, please feel free to offer any advice that might help.  I am still wondering weather head needs to come off and which is best side to remove the lump from?

Submitted by dan_field on Friday, 13 June, 2025 - 09:05

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On a pre featherbed I just took out the RHS engine plate after dismantling the primary side and wiggled it out that way - I may have had to loosen/remove the oil tank to help - I can't recall! 
Dan

Thanks for reply Dan. I was beginning to wonder if my posts were get through.  I have made some progress which is good.  I now have the gearbox out of the frame and didn't have to take the whole engine gearbox lump out.  It was not easy but I am working on my own and need to keep the lifting and shifting down to a minimum.  All I need to do is remember how it all goes back together. 

 



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