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magic930 magic930 is offline
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Join Date: Apr 2003
Location: Carnation, WA
Posts: 623
The Bowden tube is essentially the sheath which the clutch cable goes through (the black part). It has to have the correct tension on it to work correctly. It should arch up over the throttle linkage. The bowden tube works like a spring on the cable. When the clutch engages the torque twists the engine and transmission in its mounts (thats why old mounts can cause this problem, they allow too much twist). What the Bowden tube does is; it keeps the cable the same length as the engine twists. If there is not enough bow in the Bowden tube then it will do nothing to assist with this condition. Think about it like this, if the engine twists it will relieve tension on the clutch cable, and it will disengage, the engine twists back, the cable tightens and it grabs again, this happens in a fraction of a second, before your foot has even changed position on the pedal. So then it pulses on and off and the car bucks. The Bowden tube is designed to keep a steady tension on the cable as the engine moves on its mounts. Other contributing factors are a dirty disc, uneven flywheel or pressure plate.
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David
Old 04-21-2010, 12:35 PM
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