Gear box on a Mod8 350cc amc box
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Gear box on a Mod8 350cc amc box
Hi i am having problems with disasembling of the foot change ratchet shaft that is the shaft that holds the gear indicator pointer onto the splined shaft it looks to be an interferance fit but i would be gratefull if somboudy could tell me the best way of seperating the two shafts as my shaft that should hold the pointer is broken so i need to seperate the two shafts but do not want to case more damage doing it many thanks for any help in geting it apart also is it best held together with lock tight ??
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Re: Gear box on a Mod8 350cc amc box
This strip and rebuild article for the AMC 'box may help...
http://archives.jampot.dk/technical/Tra ... _1987).pdf
http://archives.jampot.dk/technical/Tra ... _1987).pdf
Last edited by SPRIDDLER on Sun May 29, 2016 8:30 am, edited 1 time in total.
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Re: Gear box on a Mod8 350cc amc box
Many thanks for your reply but i have a lightweight for my sins "I should have said" I tryed to view the article for the Heavyweight but only got an error message ?? anyway hayho if you have any other ideas i would be greatfull to receve them well i'm out in the shed to have another look.SPRIDDLER wrote:From your other posts I assume (because your Profile is incomplete) you have a Heavyweight 350 (350) not a Lightweight (model 8).
This strip and rebuild article for the AMC 'box may help...
http://archives.jampot.dk/technical/Tra ... _1987).pdf
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Re: Gear box on a Mod8 350cc amc box
Hmm, it does the same for me too so try this route:
http://archives.jampot.dk/technical/Transmission/AMC/
Then from the list choose AMC_Gearbox_Stripdown_and_Rebuild__(Classic_Mechanics_1987).pdf
Dismantling and refitting bits of the L/W 'box is on page 26 in the Owners Instruction Manual here:
http://archives.jampot.dk/book/Owners_m ... Manual.pdf
There are a couple of L/W gearbox experts on here who will no doubt help you.
http://archives.jampot.dk/technical/Transmission/AMC/
Then from the list choose AMC_Gearbox_Stripdown_and_Rebuild__(Classic_Mechanics_1987).pdf
I don't know anything about Lightweights (Model 8) but I don't think they have what is generally known as an AMC 'box............ Here's an exploded diagram of the 'Lightweight' box. Zoom it to 250% for a clear view of the details. http://archives.jampot.dk/book/Workshop ... manual.jpgpoacher141257 wrote:
Many thanks for your reply but i have a lightweight for my sins
Dismantling and refitting bits of the L/W 'box is on page 26 in the Owners Instruction Manual here:
http://archives.jampot.dk/book/Owners_m ... Manual.pdf
There are a couple of L/W gearbox experts on here who will no doubt help you.
Last edited by SPRIDDLER on Sun May 29, 2016 8:32 am, edited 1 time in total.
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Re: Gear box on a Mod8 350cc amc box
I cant remember having any problems stripping my lightweight gearbox. It all fell apart as expected.
Have you got any covers off yet
Have you got any covers off yet
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Re: Gear box on a Mod8 350cc amc box
Hi Alan i have my gear box in as many parts as needed to fix the problems i am having with the box but having had a look at Spriddler's link to the parts list for the lightweight mod 8 the parts i am having problems with are the plain shaft part no- 042146 that has two small o rings in it and at one end it holds the gear indicator pointer "near your right ankle" and the other end it fits into a splined shaft part no-041332 The problem i am having is geting this joint apart as the shaft that holds the gear pointer is broken of at one of the oil o rings and i have a new one but canot get the old damaged part of the shaft out of the splined shaft.alanengineer wrote:I cant remember having any problems stripping my lightweight gearbox. It all fell apart as expected.
Have you got any covers off yet
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Re: Gear box on a Mod8 350cc amc box
Hello Poacher, you need to use some force. From your description you are trying to remove the broken shaft 042146 from 041332. As previously mentioned this is an interferance fit.
I would suggest holding the broken shaft tightly in a vice and use a punch against the shoulder below the first set of splines after the threads. tap the outer shaft off the inner shaft.
You might want to apply some WD40 or even some heat if its really stuck. It may be easier if you have left the segment ratchet or fork selector ( 041334) on the shaft as you could knock against this instead - bigger target!!
I have photographed the parts that i think you are struggling with in case anyone else has a better way.
Cheers
Steve
I would suggest holding the broken shaft tightly in a vice and use a punch against the shoulder below the first set of splines after the threads. tap the outer shaft off the inner shaft.
You might want to apply some WD40 or even some heat if its really stuck. It may be easier if you have left the segment ratchet or fork selector ( 041334) on the shaft as you could knock against this instead - bigger target!!
I have photographed the parts that i think you are struggling with in case anyone else has a better way.
Cheers
Steve
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Re: Gear box on a Mod8 350cc amc box
Rangy65 wrote:Hello Poacher, you need to use some force. From your description you are trying to remove the broken shaft 042146 from 041332. As previously mentioned this is an interferance fit.
I would suggest holding the broken shaft tightly in a vice and use a punch against the shoulder below the first set of splines after the threads. tap the outer shaft off the inner shaft.
You might want to apply some WD40 or even some heat if its really stuck. It may be easier if you have left the segment ratchet or fork selector ( 041334) on the shaft as you could knock against this instead - bigger target!!
I have photographed the parts that i think you are struggling with in case anyone else has a better way.
Cheers
Steve
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Re: Gear box on a Mod8 350cc amc box
Hi Rangy65 thanks for your help with how to split the two parts apart. Alas i tryed all these and only managed two break my vice so i have given the job to an engineer with a Russian wresteler size vice do his best as with your help we have now been able to confirm that it is an interferance fit and we are not going to do more damage being a bit brutal with it..