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indian46
2CV Fan
Joined: December 27th, 2011, 9:50 pm
Posts: 99
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 Possible gearbox trouble. Hello, (again),
Gearbox query this time. (ODTAA!)
My 1986 2CV which I bought last year, shudders when pulling away. (Did from day one of ownership). There is also a slight vibration at a certain slowish speed, which I thought was a problem with the carb/ignition, but I now think it is mechanical.
I have checked the drive-shafts and engine/g/box mountings.
I replaced the engine, (old one had a nasty knock), together with a complete new clutch, but it didn't cure the vibration.
It's not a big problem other than I remember reading that such a vibration could spell g/box woes. If so, what sort of woes are we talking about. Is it checkable in situ.
I have a spare box, but before changing, is there any advice?
Taeverso,
Chris
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| August 4th, 2014, 7:27 pm |
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Vasil Ami
Firing on two.
Joined: December 6th, 2013, 9:55 pm
Posts: 115
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Re: Possible gearbox trouble. Could be a damaged shaft that goes from the box into the engine...
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| August 4th, 2014, 7:43 pm |
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Jonathan
Firing on two.
Joined: January 1st, 2009, 7:37 pm
Posts: 4708
Location: Disunited Kingdom
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Re: Possible gearbox trouble. Could just be clutch judder. Modern replacement clutches are made from shitty stuff and can't cope with transfering the massive 29bhp and torque from a 2CV engine to the gearbox. I've had two Valeo clutches fitted and both have developed judder.
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1988 built (1989 F-registered) Citroën 2CV-Six
2013 (63-Plate) VW Golf SE 1.4TSI BMT DSG7
1932 Morris Minor Open Two-Seater (The £100 car).
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| August 5th, 2014, 12:39 pm |
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ken
Agony Aunt - You have a car problem? Speak to Ken
Joined: March 6th, 2009, 1:40 am
Posts: 3675
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Re: Possible gearbox trouble. But, was the spigot bearing replaced when the clutch was done, also was there any sign of gear oil leaking forwards along the input shaft? A worn spigot bearing or oil contamination of the friction material will both cause judder. Jonathan wrote: Could just be clutch judder. Modern replacement clutches are made from shitty stuff and can't cope with transfering the massive 29bhp and torque from a 2CV engine to the gearbox. I've had two Valeo clutches fitted and both have developed judder.
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| August 5th, 2014, 5:08 pm |
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samfieldhouse
Firing on two.
Joined: February 11th, 2009, 12:32 am
Posts: 3324
Location: Chichester, West Sussex
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Re: Possible gearbox trouble. More revs as you lift your foot off the clutch. Mine judders at low rpm.
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| August 5th, 2014, 5:08 pm |
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indian46
2CV Fan
Joined: December 27th, 2011, 9:50 pm
Posts: 99
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Re: Possible gearbox trouble. Thanks for the replies.
There is no oil leakage from the output shaft, and when I changed the clutch I checked for play at the shaft end: I don't remember much movement there at all.
Other than the shuddering, the box is quiet and the syncros are fine.
Ken, how would I access a worn bush: how much play is 'too much'.
Thanks again.
Chris
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| August 5th, 2014, 6:06 pm |
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Sean
Firing on two.
Joined: April 22nd, 2009, 11:06 pm
Posts: 3684
Location: Ecosse
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Re: Possible gearbox trouble. at a couple of ££ just replace it with any "Oiltite" type bearing they are widley available as its a standard size the oil seal is also the same as the output shaft of all those Hondas and Fondas ( cheap Chinese clones) engines that power everything from garden machinery to small carts )
or you can just get it from the parts suppliers with a healthy "convenience" tax
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Kissing the Lash
"Any advice of a technical nature is given on the understanding that I've actually done this shit, not just read about it in D*lly club mag some time ago.
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| August 5th, 2014, 9:48 pm |
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