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Well, if it wasn't the M47 5-speed, and an '89, I would think other, but the late model M47 5-speed has a big cast iron counter weight on the end of the clutch yoke. This counterweight can hang up causing the problem you describe. The system uses only the clutch pressure plate spring force for the return of the clutch cable, and does not incorporate a clutch return spring.
Although the mount may be contributing to the problem (I would replace it for the $8 and be done with it anywy) it is most likely the counterweight is not returning to fully engage the clutch when the pedal is released. There are three reasons why the cable is not returinng, one is the cable is worn and is causing friction, hanging up the yoke/counterweight. Second is that the clutch pressure plate is not as 'springy' as it was when new. This is not uncommon on the M47 to have the pressure plate get soft long before the disc is worn out. The clutch has a very long ingagement, and the spring travel is proportionate to the cable return. I've seen the spring from a worn M47 clutch and the fingers are bent inward. This almost always makes the clutch feel hard, or firmer than a new clutch once you've adjsuted the cable. Third is that the cable and throw-out bearing is in need of adjustment or just lubrication. Also, putting a return spring onto the yoke is something you may what to do. That is what I've done, also removed the counterweight, but will put it back in as soon as I get a new Volvo clutch cable.
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'89 245 Sportwagon, '04 V70 2.5T Sportwagon
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