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Damage to clutch chainwheel
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gazzoowen
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November 25, 2012 - 6:46 pm
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Clutch-chainwheel.jpg

I've stripped my D7 engine down and the area where the circlip that retains the pinion sits is quite badly damaged.  The circlip wasn't attached when I stripped the engine down but I've put it back on and it doesn't look like there's enough metal on the chainwheel for it to stay on - it looks to me like it may have to be replaced?help

Can anyone offer any advice?

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jess steele
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November 25, 2012 - 6:57 pm
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hi gaz your missing the spring and washer.you know that don,t you alot of d14,s do the same thing a new basket is always better but it will still work even without circlip but you have to fit spring and washer,ps i,ve seen worse some times circlip won,t hold on

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gazzoowen
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November 25, 2012 - 7:18 pm
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jess steele said
hi gaz your missing the spring and washer.you know that don,t you alot of d14,s do the same thing a new basket is always better but it will still work even without circlip but you have to fit spring and washer,ps i,ve seen worse some times circlip won,t hold on

 

Thanks Jess, I've got the spring and washer so I'll try it with them on too (didn't realise they were also retained by the circlip) and then take another look.

 

Cheers

 

Gaz.

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Oily Rag
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November 25, 2012 - 8:32 pm
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Gaz - I have had the same issue on my recent D14 rebuild.

 

I put it down to the cup washer which sits on the spring, maintaining the pressure

on the kickstart ratchet lugs at the back of the clutch basket.

 

The cup washer wears and the internal angle of it gets slack and allows the washer

past the circlip.  You will see what I mean if/when you fit a new cup washer, which

should stay behind the circlip now.  Hope that made sense confused

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Oily Rag
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November 25, 2012 - 8:36 pm
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3.  The clutch basket rear section, which rotates within the kick start ratchet gear has been

'nibbled at' and rough.  I notice that some replacement bushes which sit in this have an edge/flange

but mine doesn't.  Has this contributed to it being mangled ? 

I haven't found any evidence of metal particles from the clutch agro, so I assume this has happened

a long time ago and has been flushed out by subsequent oil changes.  Slightly confused over this.

What function does the thin circlip which sits behind the nibbled at area actually have ?

A couple of pictures which will help my description.  Not brilliant, but I hope they suffice.

 

http://i237.photobucket.com/albums/ff103/BaldBeardy/DSCF0437.jpg

 

Hopefully this should show the ragged edges better ...

 

http://i237.photobucket.com/albums/ff103/BaldBeardy/DSCF0436B.jpg

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David Dale
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November 25, 2012 - 11:26 pm
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Oily Rag said

What function does the thin circlip which sits behind the nibbled at area actually have ?

 

The circular clip holds the dished washer in which holds the spring back, sounds like your dished washer is worn out? DD.

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mossyman
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March 8, 2013 - 3:37 pm
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This is exactly what mine looks like! Just put a new topic on entitled 'Wobbly clutch basket'. Can you buy the cup washer separately?exactly

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Oily Rag
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March 8, 2013 - 5:06 pm
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Rex Caunt sells 'em fo' sho'.

 

I'm sure I've seen them on eBay also.

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mossyman
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March 8, 2013 - 5:10 pm
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As an extension to my 'Wobbly Clutch Basket' thread; the 'nibbled' end scenario has got me thinking........Indeed my cup washer does seem to have stretched internally and no longer does the tiny spring circlip retain it, so I thought, why not put a bigger circlip on the shaft? Minutes later I have an external circlip in place which offers a much wider retaining surface for the cup washer, even in it's stretched oversized condition. Can't foresee any potential probs arising from this modification - can you? Wish I knew how to upload a photo of it, I keep being told it exceeds the maximum size........«censored» computers....!!   doh

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Piquet
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March 8, 2013 - 5:20 pm
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mossyman said
 Wish I knew how to upload a photo of it, I keep being told it exceeds the maximum size........«censored» computers....!!   doh

You need to know there are two ways to get photos on here, the first is by using a hosting site such as Flickr, Imageshack or Photobucket etc. This has the best quality but can be a problem if the hosting site is unavailable, or if the pictures are moved or deleted by the up-loader they are lost to future readers.

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The second way gives lesser quality but the pictures remain on the Forum for future readers to see. These are uploaded directly to the Forum but there is a maximum size limit of 1Mb which means you will have to re-size the picture.

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Credit goes to Anderzander for the tutorials.

I'm not a complete idiot ............................................ some parts are missing.

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mossyman
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March 8, 2013 - 5:21 pm
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Thanks - will try!read-manual

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mossyman
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March 8, 2013 - 5:51 pm
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rsz_cases_006.jpg

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Blue Heeler
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March 8, 2013 - 10:45 pm
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Shouldn`t be a problem with that....as long as it can`t snag on anything.Bit of loctite for extra security perhaps?I`ve sworn at a few of those tinny cups!

Blue

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mossyman
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March 9, 2013 - 1:15 pm
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I have now checked that the clip doesn't touch the case where the mainshaft bearing sits by smearing a thin layer of sealant over the  outermost surface of the casing behind the clutch wheel, tightened everything and gave it a spin. Removed everything again - the sealant was undisturbed! I think it runs close but no contact. I guess I will give it a go eh....???? It occurs to me that the cup washer wouldn't have to wear much before popping over that original puny spring clip.whistle

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