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Old 05-15-2016, 05:05 PM   #1
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Join Date: Apr 2016
Location: Alabama
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Year: 1991
Coachwork: Thomas Saf-T-Liner
Engine: Cat 3116
1991 Thomas Saf-T-Liner ER questions

Starting doing some work on the bus today and had a couple questions.

Should there be a high idle switch somewhere on the dash? Or did not all buses come with this?

I hooked up the air horns (they had been unplugged) and I can hear air coming out but no sound. Is there a reed or something that would need replacement?

Does anyone know what these two switches below the transmission shifter are for? The left on has a light on it when flipped up and I can here some sort of short burst of air coming from the rear when the switch is flipped up. The switch on the right appears to do nothing.



How do I drain the air tanks? I don't see a drain anywhere.

Can anyone recommend a trailer hitch that is known to work with this bus? At least a class 4. I think I may just get one of those multi-fit hitches. But would be nice if I could get one that lines up with the holes that are already there.



Been thinking of getting a front hitch too for a bike rack. Not sure on this yet. But it looks simple enough.

Put in a working radio today and got half the seats out. Had to stop as I ran out of cut off wheels. The dog likes the bus as well!



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Old 05-15-2016, 05:13 PM   #2
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Use your air tank with air gun to remove the seat bolts much easier
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Old 05-15-2016, 05:22 PM   #3
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Good to hear about getting seats out of buses. The switches are something you're probably going to have to trace out as your build progresses. It's possible someone has a bus just like yours and can tell you what they are for, but it's also possible the bus barn mechanics added those switches.

I believe you should have an air dryer on your system. Don't you get the PSSSST! every couple minutes? Otherwise the tank drains are on the bottom of the tanks if they have them.

If you put on a front hitch you'll not only be able to carry bicycles, you'll be able to park trailers with accuracy like you wouldn't believe.
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Old 05-15-2016, 06:13 PM   #4
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Quote:
Originally Posted by powderskier View Post
Use your air tank with air gun to remove the seat bolts much easier
Good idea!

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Old 05-15-2016, 06:14 PM   #5
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Originally Posted by Robin97396 View Post
Good to hear about getting seats out of buses. The switches are something you're probably going to have to trace out as your build progresses. It's possible someone has a bus just like yours and can tell you what they are for, but it's also possible the bus barn mechanics added those switches.

I believe you should have an air dryer on your system. Don't you get the PSSSST! every couple minutes? Otherwise the tank drains are on the bottom of the tanks if they have them.

If you put on a front hitch you'll not only be able to carry bicycles, you'll be able to park trailers with accuracy like you wouldn't believe.
I do get that air noise every couple minutes, so that's an air dryer? So theoretically with an air dryer I shouldn't have to drain the tanks? Cool, good to know.

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Old 05-15-2016, 06:17 PM   #6
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Another question: should there be a glow plug light?

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Old 05-15-2016, 06:38 PM   #7
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Some have a light that goes off when the glow plugs are warm, others don't. It's a given that the glow plugs are warming up if you're starting from cold. I just count the beeps. If it's warm weather, for in the mountains, I give it 30 seconds. If it's cold I wait at least 40 seconds. It won't start if it's not ready. You'll notice that it beeps faster when starting after it's already warm.
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Old 05-15-2016, 07:43 PM   #8
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not all engines have them... My bus doesnt have glow plugs or a grid.. you just hop in start it and go.

im not sure if the cats have glow heaters or not.
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Old 05-15-2016, 09:15 PM   #9
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i have a 96, the switch on the left is my high idle. maybe yours is leaking or broke
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Old 05-16-2016, 09:07 PM   #10
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i have a 96, the switch on the left is my high idle. maybe yours is leaking or broke
What does your rpm go up to when you engage the switch?

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