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PITApan
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Joined: November 09, 2014
Posts: 1058
Location: Northern Colorado
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 Posted: Wed Feb 18, 2015 6:48 pm Post subject: where does the hose go --- Front vent drain hose |
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Maybe this one belongs in Stupid Questions. I leave it to mods to move if appropriate.
Props to Xinemae for the pic. See the corrugated hose (red arrow)?
I found one of these lying loose down in the bottom of the nose cavity. There is a tin spigot on the bottom of the fresh air intake plenum that looks like it would fit that hose.
So what is this system? Does the hose go on that spigot? Where does the other end go? What does it do? Drain of some kind?
thanks!
Last edited by PITApan on Fri Feb 20, 2015 5:22 pm; edited 1 time in total |
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aeromech
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Joined: January 24, 2006
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Location: San Diego, California
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| Posted: Wed Feb 18, 2015 6:52 pm Post subject: |
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I've never seen that hose before. Are you sure it's original?
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PITApan
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Joined: November 09, 2014
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Location: Northern Colorado
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| Posted: Wed Feb 18, 2015 6:57 pm Post subject: |
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| aeromech wrote: |
| I've never seen that hose before. Are you sure it's original? |
Well, I know two people so far that have one. Mine is a '73. Xinemae has a '70 I think. If it melts off tomorrow I'll try to get a pic of the spigot and the loose hose.
Nothing in the manuals. |
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richparker
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aeromech
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| Posted: Wed Feb 18, 2015 7:08 pm Post subject: |
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We think alike Rich
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jakokombi
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Joined: August 15, 2010
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| Posted: Wed Feb 18, 2015 7:18 pm Post subject: |
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As I recall, that hose dumps a bit of warm air onto the steering box.
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busdaddy
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| Posted: Wed Feb 18, 2015 7:37 pm Post subject: |
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| jakokombi wrote: |
| As I recall, that hose dumps a bit of warm air onto the steering box. |
Only if you fiberglass a custom duct for it, on everyone elses buses it drains water from the fresh air intake grill on the nose 
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jakokombi
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| Posted: Wed Feb 18, 2015 7:42 pm Post subject: |
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BD it's -4 in my shop right now, please don't make me go look.
Is there a hose that dumps on the steering box? Anything?
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PITApan
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Joined: November 09, 2014
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Location: Northern Colorado
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| Posted: Wed Feb 18, 2015 7:52 pm Post subject: |
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| busdaddy wrote: |
| jakokombi wrote: |
| As I recall, that hose dumps a bit of warm air onto the steering box. |
Only if you fiberglass a custom duct for it, on everyone elses buses it drains water from the fresh air intake grill on the nose |
I can do custom ducts---any geometry. Hand carve 'em out of foam and use epoxy resin to do the lost foam process.
Where would I go looking for the exit hole? I dropped a socket down there and went feeling all around. No hole. (no socket either...hmmmm...) |
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busdaddy
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| Posted: Wed Feb 18, 2015 7:54 pm Post subject: |
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It comes out near the steering box but only by coincidence, it's just a drain.
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aeromech
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| Posted: Wed Feb 18, 2015 8:03 pm Post subject: |
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What year started that Mark? And while you're at it what engineer designed it and what day of the week was that bus built?
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PITApan
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Location: Northern Colorado
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| Posted: Wed Feb 18, 2015 8:07 pm Post subject: |
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| busdaddy wrote: |
| It comes out near the steering box but only by coincidence, it's just a drain. |
Pretty critical one methinks. I'll go looking some more. Thanks! |
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airschooled
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| Posted: Wed Feb 18, 2015 10:34 pm Post subject: |
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| busdaddy wrote: |
| It comes out near the steering box but only by coincidence, it's just a drain. |
But, like, dude, isn't that hole above the steering box for running speaker and amp wire? How else do I power my twelve-inch subs?
Gary, my mid-'69 has it. I bet it came in '68, since the whole intake air plenum was redesigned for the bay window setup. Most buses I see have the hose missing. Probably adds five horsepower if you remove it. I only realized what it was after running all my sound system wire through the floor pan hole…… 
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Last edited by airschooled on Wed Feb 18, 2015 10:35 pm; edited 1 time in total |
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GMATech
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| Posted: Wed Feb 18, 2015 10:34 pm Post subject: |
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I remember yanking that off by accident when I was doing the football in the nose. I remember thinking "can't wait to figure out where that went"
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curtis4085
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| Posted: Thu Feb 19, 2015 5:08 am Post subject: |
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Remove the skid plate to access the drain..
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PITApan
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Location: Northern Colorado
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| Posted: Thu Feb 19, 2015 10:57 pm Post subject: |
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| curtis4085 wrote: |
| Remove the skid plate to access the drain.. |
I just got a skidplate from a junkyard and haven't figured out where it goes yet. |
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PITApan
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Location: Northern Colorado
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| Posted: Thu Feb 19, 2015 11:00 pm Post subject: |
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Pic of the drain spigot coming off the intake plenum:
I did find the exit hole. It was hidden under something terrible with a bite out of it.*
The socket landed on the steering support. I got lucky and spotted it.
*Props to Carol Carr. |
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PITApan
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Posts: 1058
Location: Northern Colorado
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| Posted: Thu Feb 19, 2015 11:07 pm Post subject: |
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| jakokombi wrote: |
| Why does the Ejector Seat button have a B on it? |
"B" is for "bail!!". |
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old DKP driver
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Location: Los Gatos,Ca.
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| Posted: Thu Feb 19, 2015 11:36 pm Post subject: Drain Tube |
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As BD & Curtis said it's a drain tube and started in 68 Robbie !
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jtauxe 
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| Posted: Fri Feb 20, 2015 8:00 am Post subject: |
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Wow - a whole lot of non-useful replies there... 
That hose, which is often missing, attaches to the drain at the bottom of the air box, as has been pointed out. The other end of it is to be fished vertically through a hole in the body directly below. That way water that gets into the airbox (like from driving in the rain) gets neatly diverted to the road below, just in front of the splash pan.
It actually is an important connection. Without it, water gets put into the space forward of the kick panels, and may or may not find its way to the drain hole.
AFAIK, all buses have these, or at least did have them.
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