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Thread: Flapper box restoration ?

  1. 12-01-2014, 11:14 AM #1
    Greg D.
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    Flapper box restoration ?

    I wonder if I'm calling them the wrong name because it doesn't return much on the search. The orangish heater valves that get a flap rotated by the cabin heater control cable, and should return in place when the lever isn't pulled.

    I've got a sticky one on one side, so whenever I or someone servicing my car accidentally grabs the heater lever instead of the start up lever, I get heat all day till I can get under the car and manually move it. It happened once in FL on a 95F day and things got so toasty that I had to turn around and go home ;-) Now that I relocated in a cold state, I could use on-demandl functionality: how easy are those to repair ? Or is it a "replace" situation ? I've sprayed lube at it but nope... it moves with a screwdriver... If anyone's done theirs, can you tell me what's involved to restore smooth operation before I got dig mine out please ? Thanks !
    Greg.
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  2. 12-01-2014, 04:19 PM #2
    edmayo
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    Disconnect the cable, now see if the valve operates easily, if so you have a cable alignment problem, if not you have a sticky valve problem, if sticky valve remove and lube/tweak whatever until its smooth. If cable problem rotate the cable clamp/cable director until the valve operates freely.
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  3. 12-01-2014, 05:05 PM #3
    Silverbullit
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    They do dis-assemble/assemble, but like Ed says, isolate the problem. If the flapper, try a overnight soak with Kroil or PB Blaster.
    Brian
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  4. 12-01-2014, 05:26 PM #4
    Longballa
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    Check that the spring isn't broken. The flapper just rotates on plastic bushings pulled by the spring. Restored they could look like this.
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  5. 12-01-2014, 06:39 PM #5
    BOYER73S
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    scott do you know if these are the same from 69 - 73?
    Clyde Boyer





    1973 2.4E Coupe RHD Aussie 5 speed
    1973 2.4E Coupe RHD Aussie 5 speed my first ever 911 (1995)
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  6. 12-01-2014, 07:19 PM #6
    Longballa
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    Quote Originally Posted by BOYER73S View Post
    scott do you know if these are the same from 69 - 73?
    Yes the same
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  7. 12-01-2014, 08:57 PM #7
    Greg D.
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    Cool, thank you guys... I didn't think it could be the cable, but that makes sense. Nothing special about undoing them other than tight spaces ?
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  8. 12-02-2014, 12:52 AM #8
    classic
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    Soak the studs overnight if they have any corrosion on them.
    Tony
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  9. 12-02-2014, 10:46 AM #9
    Silverbullit
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    What year are you working on?
    I have a couple leftovers…
    I think thru '67 are different, changed in 68...
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    Brian
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  10. 12-02-2014, 12:15 PM #10
    sithot
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    Well, there's this solution or see if Jim @ Easy has any that are usable.
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