June 25, 2018, 03:44:10 AM

Author Topic: Windshield motor pump for GM 4104  (Read 6871 times)

Offline harleyman_1000

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Windshield motor pump for GM 4104
« on: August 23, 2013, 07:20:50 PM »
 Does anyone have a windshield motor pump for a GM 4104?
Scott 
St.Louis Missouri

1958 GM 4104 Extended 2 feet, with a 6v92 and 5 speed automatic

http://s783.photobucket.com/user/harleyman_1000/library/Gm4104%20bus?sort=3&page=1

Offline gus

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Re: Windshield motor pump for GM 4104
« Reply #1 on: August 23, 2013, 07:29:42 PM »
There is no pump, it runs off the air system.
PD4107-152
PD4104-1274
Ash Flat, AR

Offline harleyman_1000

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Re: Windshield motor pump for GM 4104
« Reply #2 on: August 23, 2013, 07:47:08 PM »
There is no pump, it runs off the air system.
Ok, what is it called? A regulator? My drivers side one doesn't work the air inlet cracked and broke
Scott 
St.Louis Missouri

1958 GM 4104 Extended 2 feet, with a 6v92 and 5 speed automatic

http://s783.photobucket.com/user/harleyman_1000/library/Gm4104%20bus?sort=3&page=1

Offline bevans6

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Re: Windshield motor pump for GM 4104
« Reply #3 on: August 24, 2013, 02:52:21 AM »
Do you mean the bit that flaps the wiper back and forth?  It's the windshield wiper motor.  You could also mean the windshield wiper control, on the dash, that regulates the air flow to the motor.  If you mean a pump, you could mean the air pump thingy that is inside the washer bottle that holds the fluid.  It has an air regulator control on the dash too.  So you could mean about 6 different things...  They all run off air pressure.

Brian
1980 MCI MC-5C, 8V-71T from a M-110 self propelled howitzer
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Offline harleyman_1000

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Re: Windshield motor pump for GM 4104
« Reply #4 on: August 24, 2013, 08:34:27 AM »
 I mean  "the bit that flaps the wiper back and forth?  It's the windshield wiper motor."    :-[  My bus doesn't have windshield fluid shooter outter thingy....lol
Scott 
St.Louis Missouri

1958 GM 4104 Extended 2 feet, with a 6v92 and 5 speed automatic

http://s783.photobucket.com/user/harleyman_1000/library/Gm4104%20bus?sort=3&page=1

Offline luvrbus

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Re: Windshield motor pump for GM 4104
« Reply #5 on: August 24, 2013, 08:37:50 AM »
If you just broke the air line connection you can buy those without buying the complete motor fwiw
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Offline treeplanter

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Re: Windshield motor pump for GM 4104
« Reply #6 on: August 24, 2013, 08:47:03 AM »
Luke at U S Coach has many of the parts you will need to fix your bus.
Timothy

Offline Len Silva

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Re: Windshield motor pump for GM 4104
« Reply #7 on: August 24, 2013, 08:49:26 AM »
There were two different motors and controls used on the 4104, Trico and Sprague.  I think the Sprague was for the pantograph wipers and Trico for the standard, but I'm not sure.

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Offline treeplanter

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Re: Windshield motor pump for GM 4104
« Reply #8 on: August 24, 2013, 08:55:18 AM »
Mine are Air Push rebuilt them and still don't work, next replace the control valve$.
Timothy

Offline luvrbus

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Re: Windshield motor pump for GM 4104
« Reply #9 on: August 24, 2013, 09:01:04 AM »
Air Push is a trade name for Sprague same motor
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Offline gus

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Re: Windshield motor pump for GM 4104
« Reply #10 on: August 24, 2013, 11:12:56 AM »
Make double sure it isn't the switch/regulator.

Those things failing have caused a lot of motors to be replaced!

I repaired one but don't remember how I did it, just that it wasn't very easy.

Next time I'll just substitute a plain ole air valve and be done with it. The plumbing is a real PIA and has oddball fittings.
PD4107-152
PD4104-1274
Ash Flat, AR

Offline harleyman_1000

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Re: Windshield motor pump for GM 4104
« Reply #11 on: August 24, 2013, 04:01:36 PM »
 Mine says "Air Push" on it. It wasn't the air line that broke, but the plate with the threads in it that the line screws into that broke. Im trying to upload pictures from my phone that shows it, but having trouble.
Scott 
St.Louis Missouri

1958 GM 4104 Extended 2 feet, with a 6v92 and 5 speed automatic

http://s783.photobucket.com/user/harleyman_1000/library/Gm4104%20bus?sort=3&page=1

Offline harleyman_1000

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Scott 
St.Louis Missouri

1958 GM 4104 Extended 2 feet, with a 6v92 and 5 speed automatic

http://s783.photobucket.com/user/harleyman_1000/library/Gm4104%20bus?sort=3&page=1

Offline harleyman_1000

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Re: Windshield motor pump for GM 4104
« Reply #13 on: August 24, 2013, 04:32:36 PM »
 That link is to my windshield motor picture. I couldn't get it to upload here? It is a blurry picture, but it you look closely to a copper line just to the left of the yellow line. you will see what broke.
Scott 
St.Louis Missouri

1958 GM 4104 Extended 2 feet, with a 6v92 and 5 speed automatic

http://s783.photobucket.com/user/harleyman_1000/library/Gm4104%20bus?sort=3&page=1

Offline tekebird

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Re: Windshield motor pump for GM 4104
« Reply #14 on: August 24, 2013, 07:21:45 PM »
did the fitting on the motor break?