Bus Conversion Magazine Bulletin Board
December 18, 2017, 10:43:46 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: If you had an Online Subscription: It will not get torn up or crushed if you back over it with your bus.
   Home   Help Forum Rules Search Calendar Login Register BCM Home Page Contact BCM  
Pages: [1] 2  All   Go Down
  Print  
Author Topic: Pneumatic washer pump - repair or replace with electric?  (Read 996 times)
richard5933
Sr. Member
****
Offline Offline

Posts: 438





Ignore
« on: October 17, 2017, 07:23:42 PM »

The pneumatic washer pump on our new 4108 doesn't seem to push washer fluid to the windshield. I hear air moving through the switch when I press the button and I think it's making it to the washer reservoir, but nothing is being pumped out.

Anyone have an idea if these things are worth repairing or if it's a more practical option to just replace with an electric pump?

If repair is possible, does this use a pressurized reservoir? If not, what's the basic way the thing works?

Thanks.

Richard
Logged

Richard
1974 GMC P8M4108a-125 (Current Bus)
1964 GM PD4106-2412
Located in beautiful Wisconsin
KD9GRB
luvrbus
Hero Member
*****
Online Online

Posts: 18599




Ignore
« Reply #1 on: October 17, 2017, 07:33:29 PM »

Those are a air diaphragm pump the reservoir are not pressurized,if you want to keep the air you can get the new style (turbine) pump from www.rometruckparts.com   
« Last Edit: October 17, 2017, 07:40:05 PM by luvrbus » Logged

Life is short drink the good wine first
Iceni John
Hero Member
*****
Offline Offline

Posts: 1687




Ignore
« Reply #2 on: October 17, 2017, 07:58:51 PM »

I had (past tense) a Sprague air-operated washer pump that defied all my attempts to fix it and make it work right.   It hissed, gurgled, bubbled, even squirted fluid back onto my foot from the push valve, but just couldn't move enough fluid onto the windshield to make any difference.   So, I replaced it with a cheapo electric pump from Pep Boys, and I modified a push-switch to accept the original Sprague knob.   It now looks original but works excellently.   So well, that I couldn't help but install a second pump, this one for some extra nozzles above the windshields!   I now have four nozzles (two fixed and two on the wiper arms) that DRENCH the windshield.   No more pathetic dribbles for me.

John
Logged

1990 Crown 2R-40N-552 (the Super II):  6V92TAC / DDEC II / Jake,  HT740.     Hecho en Chino.
2kW of solar on the roof.
Behind the Orange Curtain, SoCal.
Oonrahnjay
Hero Member
*****
Offline Offline

Posts: 3051





Ignore
« Reply #3 on: October 17, 2017, 08:33:30 PM »

  ...   No more pathetic dribbles for me.  John

      Yeah, I remember when I was young .... Sad
Logged

Bruce H; Wallace (near Wilmington) NC
1976 Daimler (British) Double-Decker Bus; 34' long
6-cyl, 4-stroke, Leyland O-680 engine

(New Email -- brucebearnc@ (theGoogle gmail place) .com)
Dave5Cs
Hero Member
*****
Offline Offline

Posts: 3091


1979 MCI MC5Cs 6V-71 644MT Allison, Roseville, CA




Ignore
« Reply #4 on: October 17, 2017, 10:32:52 PM »

Oh not me. On our 8,874 mile trip we just finished. I just Loved to stop for fuel and use the clean water they had at Love's with the long arm squeegees with all the soap they put in the water. It didn't leave big white strips on the windshields and my arms and shoulders felt so much better the next day. When the sun was up and I used the water it wouldn't dry faster than I could use it and then drip down the front of the coach. Why would i fix my water tank and pump, Seriously. Roll Eyes
Logged

"PATHFINDER"(Bus)
Toed 1998 Jeep TJ
chessie4905
Hero Member
*****
Offline Offline

Posts: 1975





Ignore
« Reply #5 on: October 18, 2017, 04:06:17 AM »

Just bought a new air operated pump from Luke for mine. Came complete cap and all except for jug. He also sells seal kit for them. If your nozzles are removeable try cleaning them or use a straight pin.
Logged

GMC h8h 649#028 (4905)
Pennsylvania-central
lostagain
Hero Member
*****
Offline Offline

Posts: 2381


MC5C




Ignore
« Reply #6 on: October 18, 2017, 07:04:39 AM »

I overhauled mine. Mostly cleaning the mud out of the jug and the lines, and I forget what else. It's been a while... But it works good enough. Takes a little while between pumps for the system to pressurize to squirt again. My memories of driving bus in the winter in the 70s is that most didn't work, so you only used the wipers if you really had to. Or when the highway is dirty, you have to time it just right to catch it when you meet a semi that spays enough dirty water for the wipers to actually wipe the grime off...
We even had to stop on the side of the road at times to wipe the glass with snow balls...
I am amazed at the late model coaches now with modern electric wiper/washer systems that work just as good as in a car. Driving is a lot easier nowadays.
I suppose you could install an electric pump.

JC
Logged

JC
Blackie AB
1977 MC5C, 6V92/HT740
Scott & Heather
Scott & Heather's buses: MCI-9 & MCI-102
Hero Member
*****
Offline Offline

Posts: 4041


MCI-9 & MCI-102


WWW

Ignore
« Reply #7 on: October 18, 2017, 09:04:25 AM »

Funny this is being brought up, I'm renovating my washer system right now too! Tossing the air system and just using a pump. Makes more sense to me. Just have to figure out a way to connect nozzles to the wiper arms


Sent from my iPhone using Tapatalk Pro
Logged

Scott & Heather
1984 MCI 9 6V92-turbo with 9 inch roof raise (SOLD)
1992 MCI 102C3 8v92-turbo with 8 inch roof raise CURRENT HOME
Click link for 900 photos of our 1st bus conversion:
https://goo.gl/photos/GVtNRniG2RBXPuXW9
windtrader
Hero Member
*****
Offline Offline

Posts: 549




Ignore
« Reply #8 on: October 18, 2017, 10:09:13 AM »

Just tap into the pressurized fresh water system. Add a faucet handle on the dash and you're all set.  Grin
Logged

Don F
1976 MCI/TMC MC-8 #1286
Fully converted (June 2017)
richard5933
Sr. Member
****
Offline Offline

Posts: 438





Ignore
« Reply #9 on: October 18, 2017, 11:31:33 AM »

I decided to give repair a try. New one on the way from Luke.

Richard

1974 GMC P8M4108A-125 (Current bus)
1964 GM PD4106-2412 (totalled Sept 2017)
Located in beautiful Wisconsin
KD9GRB
Logged

Richard
1974 GMC P8M4108a-125 (Current Bus)
1964 GM PD4106-2412
Located in beautiful Wisconsin
KD9GRB
buswarrior
Hero Member
*****
Offline Offline

Posts: 4222


'75 MC8 8V71 HT740




Ignore
« Reply #10 on: October 25, 2017, 10:33:11 AM »

Some cheapo electric washer pumps will leave a busnut weaping tears, at about the same dribbling rate...

The air units can really move a lot of juice, through large hoses.

It all depends what "fixes" have been done to your coach, and what you will need to "unfix"...

Happy coaching!
Buswarrior

Logged

Frozen North, Greater Toronto Area
richard5933
Sr. Member
****
Offline Offline

Posts: 438





Ignore
« Reply #11 on: October 25, 2017, 12:33:18 PM »

I did get the new pump from Luke. He sent the part that goes inside the bottle. I'm hoping that is what's bad. There is of course also the push button control and the piece on top of the bottle lid, and I have not thoroughly checked those. The bus is a bone stock unit - it was originally owned by the owner of a charter company who I'm told was somewhat of a bus enthusiast. Other than what Custom Coach did with the interior and in the bays, the bus systems themselves have not been altered or touched. In fact, the bus even has the original shields under the engine & tranny.

The bus is in the shop right now have some inspections and routine maintenance done. I'll work on this some more in a few days when it's back at my place.

Thanks for the information.
Logged

Richard
1974 GMC P8M4108a-125 (Current Bus)
1964 GM PD4106-2412
Located in beautiful Wisconsin
KD9GRB
luvrbus
Hero Member
*****
Online Online

Posts: 18599




Ignore
« Reply #12 on: October 25, 2017, 01:33:17 PM »

Was that Charles Wotring bus ?
« Last Edit: October 25, 2017, 01:36:11 PM by luvrbus » Logged

Life is short drink the good wine first
richard5933
Sr. Member
****
Offline Offline

Posts: 438





Ignore
« Reply #13 on: October 25, 2017, 01:56:46 PM »

Was that Charles Wotring bus ?

The name doesn't sound familiar, but then again I really don't know. The charter company was called Super Service. The bus still carries the original livery colors and logo.
Logged

Richard
1974 GMC P8M4108a-125 (Current Bus)
1964 GM PD4106-2412
Located in beautiful Wisconsin
KD9GRB
pabusnut
Hero Member
*****
Offline Offline

Posts: 538


P8M4905A-333 former MK&O lines #731




Ignore
« Reply #14 on: October 25, 2017, 04:00:21 PM »

I think Charlie's bus was a lovely chartreuse or turqois.  Royal Coach was the name of his outfit I think.

I have not seen it in person and now I can't find a picture.

Steve
Logged

Steve Toomey
PAbusnut
Pages: [1] 2  All   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!