Steve1300
Silver Member
- Joined
- Jul 18, 2016
- Messages
- 127
- Location
- HOLT, Florida
- Tractor
- Kubota MX5800, RTV900, ZD331, John Deere X350
GPI HP-90 hand pump from TSC. I have read the reviews on it, and some people we not happy with it. Well, I was then spring-loaded to believe that it was going to fail on me. On my second barrel of diesel, I tried to pump fuel ion my RTV only to find that I appeared to not prime. Yep, I figured that this pump was no good after all. However, I am an aircraft mechanic by trade, so I figured I'd take it apart and see what is wrong.
Six bolts removed the back cover and two screws removed the plunger plate. It is simply a piston with four rubber flappers and a check valve on top. Simple right?
However, there were a few tiny buts of metal shavings that I wiped out and then reassembled the unit. Would you believe it then primed like a champ but the force required to operate the pump was pretty bad, and I sill wan't getting any fuel out of the hose? I was pretty frustrated at this point, because there really is nothing complicated about how this pump works. It should not be that hard!
I removed one of my filters to see it the filter had clogged, and it had not. I removed the other filter with the same result. So, I planned to go buy another pump, but my stubborn streak hit me.
I'll shorten the story here. I had used a flexible hose as my method of making it easy to connect and disconnect the pump when it is time to refill my barrel. On the outside of the hose, everything looked fine. On the inside, it had collapsed.
I replaced the hose with a metal-braided version and everything is working fine again. I suppose I am going to rig up and hard pipe connection to ensure that no hoses collapse on me in the future. This simple problem cost me a few valuable hours of my day.
I should have checked my hose to start with, but I had read reviews about how this pump fails to prime and made a wrong assumption. Check the easy things first.
P.S. I like simple pumps, and I feel like I shot myself in the foot when I used that short water heater hose to begin with.
Six bolts removed the back cover and two screws removed the plunger plate. It is simply a piston with four rubber flappers and a check valve on top. Simple right?
However, there were a few tiny buts of metal shavings that I wiped out and then reassembled the unit. Would you believe it then primed like a champ but the force required to operate the pump was pretty bad, and I sill wan't getting any fuel out of the hose? I was pretty frustrated at this point, because there really is nothing complicated about how this pump works. It should not be that hard!
I removed one of my filters to see it the filter had clogged, and it had not. I removed the other filter with the same result. So, I planned to go buy another pump, but my stubborn streak hit me.
I'll shorten the story here. I had used a flexible hose as my method of making it easy to connect and disconnect the pump when it is time to refill my barrel. On the outside of the hose, everything looked fine. On the inside, it had collapsed.
I replaced the hose with a metal-braided version and everything is working fine again. I suppose I am going to rig up and hard pipe connection to ensure that no hoses collapse on me in the future. This simple problem cost me a few valuable hours of my day.
I should have checked my hose to start with, but I had read reviews about how this pump fails to prime and made a wrong assumption. Check the easy things first.
P.S. I like simple pumps, and I feel like I shot myself in the foot when I used that short water heater hose to begin with.
