My left/front bar end shifter (for a triple chainset) has become stiff and is making an unhappy squeaking sound when I turn the lever. I took it apart to inspect, cleaned it and sprayed some silicone on the parts that turn against each other and in the groove where the cable sits but this hasn't helped at all.
I don't know the model, it just says 'LIGHT ACTION' on the shifter. I'm wondering if they're missing a washer or something, any ideas? They're 20-25 years old.
I sprayed wd-40 down the shift cable, that improved it. I guess the cable / housing needs to be replaced.
Try using a proper, thicker lube than wd40 on the main parts.
Ok, I'll give it a go with some oil.
It’s more likely the cables than the shifter. Disconnect the cable and try the shifter with the cable slack. That will rule out your shifter or the cables
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