Summer/Winter Pump

tjseitz · #1 02-09-2008

Hi guys. Im helping a buddy of mine with a few things on his 91SP. Today we found that the circulating pump that runs the coolant to the front of the bus for heat was not working. Found a bad relay but the pump is shot too. It is a "Groco cp-20-BB" Anyone know where to get one of these?? Tryed NAPA over the phone and they were lost. Any help would be great. Thanks Tom

mrkane · #2 02-09-2008

Try http://www.tacbusparts.com and go to "heater circulating pumps"

The CP-20BB is currently listed at $160. Was only $152.50 Feb 2007 when I purchased two for my 85 PT40 from them.

--M.R.Kane
'85 PT40
Balmorhea SP, TX

RGloverii · #3 02-09-2008

I suggest contacting Stephen Birtles.

He's very knowledgeable on these Primus units, and has helped me a great deal.

Here's his email address: stephen at dupreeproducts.com

As for replacing the pump, I would imagine that you could replace it with any 12v continuous duty pump, as long as the flow rate is similar (and the connections fit). Maybe try Grainger for a suitable pump??

chetgeist · #4 02-09-2008

Tom

You might also try your local Blue Bird school bus dealer they carry the same pump. It's listed in the Bus Spec catalog as motor, seal kit or impeller, so you might get by with a little less cost.

Chet Geist
1981 FC33, Austin, Texas

sailor7cs · #5 02-09-2008

Hi All,
I don't know if this helps, but I did a seach on the net and xame up with this site that has that pump for $112...
http://yhst-38476110118519.stores.ya.../cp-20-bb.html...
HTH

Stephen · #6 02-10-2008

we have some Groco pumps
stephen@dupreeproducts.com
905 328 0162

juswanderful · #7 02-10-2008

This Water Heater Pump Is Available From Jabsco. Br Wholesale, Marshall, Michigan Carries It Part # 81-595000012. It Has 3/4 Inch Fittings And Has A Flow Rate Of 4 Gallons Per Minute.

sfedeli · #8 02-10-2008

Hi Tom,

The Groco pumps are used in marine applications for live-well circulators and in school buses for the rear heater. Any local school bus garage could probably give you a low-cost supplier in your area. Mine have 1" hose fittings. There is also a variation with pipe thread fittings, but ours have a "BB" suffix (Barb-Barb). Here is a photo of mine. I've also pasted a link to a seller.

http://www.buspartswarehouse.com/ViewCatalog.aspx?ItemId=3769&CategoryId=3769&click =3&CategoryName=heat%20booster%20pump%20-%20brass%20head%20-%201"%20inlet%20&%201"%20outlet

tjseitz · #9 02-10-2008

Hey guys, Thanks so much for all the replys . Lots of good info here.Again you guys are life savers.Im going to check for a local supply in the morning (maybe the local bus barn)but if not Ill order one tomorrow. Thanks again Tom

iamflagman · #10 02-11-2008

The links to many Bluebird School Bus Parts Dealers web sites can be found on the forum at FC and Early Model SP and PT All American Chassis, Bluebird School Bus Parts Dealers. there is also located in that file many blueprints showing the parts and part numbers used on the All American School Bus chassis under BLUE BIRD SCHOOL BUS PARTS CUSTOMER ACCESS
http://service.blue-bird.com/Parts/PartsPubs.html