Joined: Apr 2020 Posts: 2 Threads: 1
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Location: Stourbridge
Car type: Austin seven chummy 1927
In recent weeks I have encountered clutch slip in my 27 Chummy.
As the clutch has NOT done many miles I'm assuming some kind of oil contamination. Perhaps brake clean spray but exactly where to spray it?
Does anyone have words of wisdom for me on this tricky one?
Joined: Mar 2015 Posts: 5,474 Threads: 231
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Location: Scotchland
If it is oil contamination use a talc puffer to spray fullers earth into the clutch area with the clutch pedal fully down. This will soak up the oil and you'll regain traction
Other suggestions - loosen off all the bell housing nuts so the gearbox comes back a bit, if this stops it slipping you can temporarily make half washer spacers on the studs to bing the gearbox back.
Did you change the clutch toggle pillars when you rebuilt it? If so, the new ones available can be slightly tight in the cover plate holes, this get worse as the engine heats up - the post jams in the hole and you end up with no drive or slip. You may need to add lubricant here or remove the cover plate and open up the holes slightly.
Joined: May 2018 Posts: 2,977 Threads: 560
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Location: Peak District, Derbyshire
Car type: 1929 Chummy, 1930 Chummy, 1930 Ulster Replica, 1934 Ruby
Gearbox oil level too high?