I uploaded the pdf 4008 manual. I think this water pump is the most common pump LD is using. As an aside check out the recommendations on winterizing.
I for years carried a spare water pump just in case. Last year my water pump was dying a very very slow death. I happened to be within a few miles of the LD mothership. Made an appointment. As luck would have it they didn't have that model on hand or more likely any spares. They used the one I had. Only change labor - 1/2 hour in fact.
It seems this pump is on sale on Amazon SHURFLO-4008-101-E65-Revolution-Water-Pump (https://www.amazon.com/SHURFLO-4008-101-E65-Revolution-Water-Pump/dp/B002XM5G70/ref=sr_1_2?ie=UTF8&qid=1544453541&sr=8-2&keywords=SHURFLO%C2%AE+4008+RV+REVOLUTION%E2%84%A2+BY-PASS+PUMP).
After reading the install paper I found you can buy the parts for a bit less -- ie $21 vs $60......
Amazon.com: SHURFLO 94-800-00 Model 4008 Complete Housing: Automotive (https://www.amazon.com/gp/product/B00SQ4F4V2/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1http://www.amazon.com/gp/product/B00SQ4F4V2/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1)
glen
I uploaded the pdf 4008 manual. I think this water pump is the most common pump LD is using. As an aside check out the recommendations on winterizing.
I for years carried a spare water pump just in case. Last year my water pump was dying a very very slow death. I happened to be within a few miles of the LD mothership. Made an appointment. As luck would have it they didn't have that model on hand or more likely any spares. They used the one I had. Only change labor - 1/2 hour in fact.
It seem this pump is on sale on Amazon SHURFLO-4008-101-E65-Revolution-Water-Pump (https://www.amazon.com/SHURFLO-4008-101-E65-Revolution-Water-Pump/dp/B002XM5G70/ref=sr_1_2?ie=UTF8&qid=1544453541&sr=8-2&keywords=SHURFLO%C2%AE+4008+RV+REVOLUTION%E2%84%A2+BY-PASS+PUMP).
After reading the install paper I found you can buy the parts for a bit less -- ie $21 vs $60......
Amazon.com: SHURFLO 94-800-00 Model 4008 Complete Housing: Automotive (https://www.amazon.com/gp/product/B00SQ4F4V2/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1http://www.amazon.com/gp/product/B00SQ4F4V2/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1)
glen
Thanks for these money-saving tips, Glen.
Chris
I'm fine with no spending unnecessarily on parts, but if the pump's motor is bad, replacing the housing(s) wouldn't fix the problem. As far as I know, the lower housing contains a diaphragm/valve unit and the upper housing has a pressure switch and the check valve. If one of those component has gone south, then I can see just replacing the non-functional parts. But, what are the "tells" for what the problem is? A failed check valve or loose wires should be obvious, but how does one diagnose a bad motor (from a failed diaphragm or pressure switch) unless the pump is removed and examined?
Thanks for any information! :)
I suggest just changing the entire pump, if it goes bad. It greatly reduces the time needed to change out a pump.
The cost difference isn't great and many times a failed pump head has leaked water into the motor's bearings, damaging them.
Motors wear out too, with extended use.
Shurflo's 4008 is a good pump with a long life, ours has lasted many years, a nice improvement over the earlier variable speeds pumps that went bad regularly. Carrying the same model pump, as installed, makes the replacement a much simpler job.
Larry
"I suggest just changing the entire pump, if it goes bad."
----
Yes. ;)