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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: Zephod on October 01, 2017, 03:58:27 PM

Title: Mystery cable
Post by: Zephod on October 01, 2017, 03:58:27 PM
I was on the floor of the cockpit looking for something today when I noticed my accelerator pedal had a loose cable.
(https://uploads.tapatalk-cdn.com/20171001/662147a60a517fce313f90fa335769de.jpg)
I thought there was only ONE acellerator cable but I think that's the top one since last time I drove the bus, two weeks ago, I had no problem. I'm wondering what the second thing is (on the bottom).


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Title: Re: Mystery cable
Post by: azdieselman on October 01, 2017, 05:39:43 PM
Ya'Know, You're there with the bus. Follow it out.
I suspect it is a modulator cable.
Title: Re: Mystery cable
Post by: Utahclaimjumper on October 01, 2017, 05:40:26 PM
 For the answer call,,B R 5 4 9
Title: Re: Mystery cable
Post by: Oonrahnjay on October 01, 2017, 07:02:35 PM
Quote from: Utahclaimjumper on October 01, 2017, 05:40:26 PMFor the answer call,,B R 5 4 9 

      Nahh, long-distance costs too much.  Much better to get a Chinese carrier pigeon from Harbor Freight.
Title: Re: Mystery cable
Post by: richard5933 on October 01, 2017, 08:12:36 PM
Speedo cable??

Richard

1964 PD4106-2412
Title: Re: Mystery cable
Post by: gumpy on October 02, 2017, 07:15:24 AM
That appears to be a solid copper ground wire sticking out. It may be a 120v cable that was run through there for convenience for something. 

I'm wondering what is to the right of the photo. It's been rubbing and it appears there's a missing grommet or washer or fastener where it goes through the brace post.

Maybe this was where the hand emergency brake went through the bulkhead. Or the throttle lock (don't know what year your bus is).
Title: Re: Mystery cable
Post by: Zephod on October 02, 2017, 09:10:54 AM
No. That's a braided steel cable. Bit of a mystery.


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Title: Re: Mystery cable
Post by: Scott & Heather on October 02, 2017, 09:21:37 AM
Interesting. Something that ISN'T electronic actually failed. Imagine that. Huh.


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Title: Re: Mystery cable
Post by: brmax on October 02, 2017, 11:30:46 AM
Many did have an option for a throttle control for the purpose of a power take off option/ hydraulics. But with no locking or twist to hold i suspect something else. Navistar had on that front hood style a cold air inlet, so the cable could well be that control. This is routed to the air cleaner, at a point a slide opens or closes to be used for the fresh/ cold air from the top front of the fiberglass hood ( a tunnel in the hood ). Or the choice to use only engine area air, and or less moisture, no snow from filling the air filter etc.. That looks to be a pretty robust cable so i wonder also.
This is just one option idea i have seen. hth

Floyd
Title: Mystery cable
Post by: j.m.jackson on October 02, 2017, 05:36:53 PM
Kickdown cable for the automatic transmission.


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Title: Re: Mystery cable
Post by: Zephod on October 03, 2017, 02:58:06 PM
Turns out it's truly a mystery cable. It's not the accelerator cable. One of the guys at work suggested it's something to keep the throttle more open than normal idle. That explains why it doesn't seem to have much effect on anything. Pretty much the same as the extra speed sensor on the prop shaft that's not actually connected to anything.


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Title: Re: Mystery cable
Post by: j.m.jackson on October 04, 2017, 07:32:39 AM
Pop the hood and follow it, you should have easy access to that area. Given that it's a pull cable, it can't speed up anything (it would have to push the top of the lever that the pedal is on). Maybe it was a speed governor, maybe transmission kickdown. Who knows what the body builders put there.
Title: Re: Mystery cable
Post by: Zephod on October 04, 2017, 03:03:06 PM
Quote from: j.m.jackson on October 04, 2017, 07:32:39 AM
Pop the hood and follow it, you should have easy access to that area. Given that it's a pull cable, it can't speed up anything (it would have to push the top of the lever that the pedal is on). Maybe it was a speed governor, maybe transmission kickdown. Who knows what the body builders put there.
Don't assume the makers put it there. I've seen and removed some very strange things from that bus that definitely weren't OEM.

Even the wheels aren't original. Originally it was 9-20F. Now it's 10R22.5.


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