hand throttle control

[tchecko]

What is the procedure to remove the hand brake, heater control in order to get to the device ( under the hand brake plate) that is suppose to be attached to the hand throttle control arm? Thanks:

[tobluforu]

Disengage emg brake, lift carpet, remove screws holding emg brake unit in place and move it out of the way, some. You will not be able to remove it completely without some work. What car do you have?

[tchecko]

It is a 911s-1975. If I remove the throttle control plate via the 3 screws, you do not have sufficient room to lift off the plate with the hand brake and heater controls attached. I've tried.
If I then remove the horizontal shaft by taking off the 2 nuts holding the entire mechanism, is it possible to return it to the correct position without loosing the hand brake cables at the rear wheels as well as the heater control cables at the rear of the car? It's a matter of needing enough looseness in the whole assembly so I can get to the part that broke off the hand throttle control lever which is under the hand brake plate.

If you have done it before you, you know what I mean. If you have not done it before, it's a guess. I prefer not to adjust the whole assembly by taking the whole thing apart..

[Bear911]

Some say it is easier if you remove a seat. I've managed to replace the disintegrated hand throttle part on my '76 by unscrewing the heater controls and emergency brake assembly from the tunnel (while still keeping the emergency brake cable attached.) I had to pull the emergency heat all the way up in order to have enough space to disconnect the wiring loom. With the heater controls out of the way and the emergency brake assembly loose it is possible to get the job done. A complete PITA to get the new part over the throttle cable nut, but definitely possible with some curse words and blind manuevering. If memory serves me correctly, depressing the gas pedal makes the plastic part easier to drop over the nut.

So it is definitely possible, just don't drop anything down the tunnel, or a quick job will turn in hours of fishing

[Jerome74911S]

I described this procedure in another recent post. A search might get you more info.

Anyway, you do not want to take the whole brake lever, etc., mechanism out of the car, you just want to lift and tilt it enough to be able to reach down and remove/replace the plastic bit that broke.

As has been mentioned, the hard part is that you have little space to work, and the danger is that you will drop small pieces, which will cause you more trouble.

You can get the car started and running (without the plastic piece that broke) by depressing the gas pedal and then holding a fast idle with the pedal till the engine begins to warm.

It is easier with the adjacent, left-side seat out.

[gamin]

Jerome74911s - Searched and searched for the recent post you mention with the procedure for replacing the piece for the hand throttle. Can't find it. If you have a link that you could post I for one would be greatly appreciative of the info. I have the piece and the hand brake cluster loose and not a clue how to proceed. Have both seats out for carpet install and thought I'd fix the hand throttle while I had the opportunity. Help.

[Jerome74911S]

Originally Posted by gamin

Jerome74911s - Searched and searched for the recent post you mention with the procedure for replacing the piece for the hand throttle. Can't find it. If you have a link that you could post I for one would be greatly appreciative of the info. I have the piece and the hand brake cluster loose and not a clue how to proceed. Have both seats out for carpet install and thought I'd fix the hand throttle while I had the opportunity. Help.

Nuts! I searched and I can't find it either. Luckily there isn't much else to tell.

This job isn't complex, just fussy to do. Unfortunately I didn't take pictures of this - I usually photograph everything I work on.

Pull the whole brake lever and throttle lever assembly up slightly and tilt to the right as much as possible without messing up any connections. You will have to work by reaching your fingers down into the small slot in the tunnel that you have created.

The plastic gizmo that connects the throttle lever to the throttle cable is installed on the lever mechanism on a small shaft, and is held on the shaft by a circle clip. Carefully pry this clip off. It can pop off and fly somewhere mysterious, in which case you will have to inconveniently find another one.

Then, taking the remnants of the old plastic connector off the shaft is straightforward. Replace it with the new one and reinstall the clip. I don't remember if you have to fit the connector over the throttle cable before or after you place it on its shaft, but this will be obvious when you see it. There should be no need to readjust the stop on the cable, but if there is, just one screw is involved.

I found bits of three of those plastic things down in my tunnel.

[RWebb]

searching on 'hand throttle lever' produces this & many others:

Hand throttle lever

[tchecko]

Bear911. Thanks for encourgement.
If I read you reply correctly, it says if I remove the 3 bolts holding the hand brake plate , I will have enough play to loosen the heater controls cables. Also lowering the hand brake rod to the floor will assure me more clearance. Sounds like a piece of cake, if I don't drop anything. Did I read you correctly?


One thing for sure: remove the drivers seat.

[TV74911S]

try this thread Hand throttle lever

[Bear911]

Originally Posted by tchecko

Bear911. Thanks for encourgement.
If I read you reply correctly, it says if I remove the 3 bolts holding the hand brake plate , I will have enough play to loosen the heater controls cables. Also lowering the hand brake rod to the floor will assure me more clearance. Sounds like a piece of cake, if I don't drop anything. Did I read you correctly?


One thing for sure: remove the drivers seat.

Got to think back a bit, but the way I got the heater control box sufficiently out of the way was (with hand brake off, ie on the floor):

1) loosen four screws that attaches plastic box to tunnel/floor
2) slip circular rubber (with the three slits for emergency brake, emergency heat and hand throttle) off of plastic box and over levers.
3) Raise red emergency heat lever up fully. It is going to whine, that's fine, it's not like you are doing this every day. Pull off plastic coupler/ linkage that attaches to this lever.
4) now the box can be raised a bit further to unplug wiring.
Now emergency brake plate can be loosened and tilted aside a bit to provide you with access. Hope this helps... Good luck.

[Bear911]

Unless a '75 doesn't have the rubbish electric heater control box, in which case disregard. Then just loosen the 3 bolts and tilt.

[Jerome74911S]

BTW, the broken plastic piece I replaced was still flexible, not brittle. Those things are not tough, it seems, so depress the foot throttle, then pull it up to relieve strain on it as has been mentioned elsewhere.

[tchecko]

Bjorn, The 1975-911s does not have a electrical heater box under the hand brake plate hence no connect-disconnect plug. The tension on the hand brake cable and the two heater control levers, gives you very little room to lift the hand brake plate, maybe 1 inch high.
I know a method how to get to the hand throttle control unit but I would like to know what does the Porsche factory manual say about the removal of the hand throttle control unit. My method requires to essentially to loosen all the control cables and you might have enough wiggle room. It would be interesting to know what the factory says.

Being summer here, there is no need to use the hand throttle but in the winter it would be desirable.

[gamin]

Thanks Jerome74911S and RWebb for all the info and links. My confidence is reestablished.
I think.