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hearet/air control knows

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tahoe healey

tahoe healey

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I am about to replace the knobs on the heater and air control and I cannot figure out how to get the plastic parts off. There is a silver stud in the shaft which holds the plastic onto the shaft. It is not fitted for a tool (ie, a screw driver or anything I recognize). Am I missing something? Has anyone done this? HELP!
 
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I cannot figure out how to get the plastic parts off. There is a silver stud in the shaft which holds the plastic onto the shaft. It is not fitted for a tool (ie, a screw driver or anything I recognize).

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The "stud" is a spring-loaded button. Just push it in and pull the knob from the shaft.
 
Great! I didn't try that. Do I have to pull the whole dash to replace the center bakelite control? Not a lot of room back there.
 
You can do it with the dash in the car, but you need small hands. Part of the problem is keeping the heater control unit connected to the fascia panel as you try to reinstall everything. They're held together by the same screws that attach the whole works to the dash, and there's several spacers thrown into the mix, just for added excitement.

By the way, if you're replacing the old knobs anyway, it's just as easy to crunch the old ones, and remove the broken pieces. On mine, the spring loaded pin had pretty well fused to the knobs, and no amount of pushing would make it budge. I finally just grabbed a pair of vice grips, and crunched the old knobs into tiny pieces. After that, they pretty much removed themselves.
 
I got the job done. It took 5 hours! I had to remove the dash. I managed to mess up the wiring while I was at it. OK now. Also learned why the Brits use the tearm "bloody". It is a tight fit back there. Thank for all the help. The push buttons worked.
 
"Crunching" the old parts.....Hmmmmmm....sounds like a good dose of therapy there!!!! Many has the time been that I felt like crunching the blasted things!
 
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