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View Full Version : Anyone had issues with Jabco pumps failing?


andersonmc
07-13-2014, 05:57 PM
I have 2 rear Jabco reversible pumps that seem to be having issues. I saw on wakemakers that they suggest not installing upside down or it will cause pump to fail sooner then later. When I bought the boat the port side was installed upside down. Is this how Mastercraft does them from the factory?

My second question is if I truly do have a pump issue. Port side pump will only work every so often? How do you know when your pumps are fried? Its popping the breaker when pump won't turn. I assume the motor is locked up? No shorts and its getting power.

tr6coug
07-13-2014, 06:14 PM
MC did factory install some pumps with the pump head on the top. The pump heads can leak and the motor is not water-proof, so after time the motor will corrode. This happened on my port side pump after about 3 years. It would run but it was very loud and had a grinding sound. Eventually it just stopped turning. I took it apart and the bearings were completely rusted.

If yours is tripping the breaker and it won't run, its a pretty good bet the motor is shot.

andersonmc
07-13-2014, 07:10 PM
Never heard it grind, and it always worked unless impeller was stuck from not being used for a long time. Not until I took it into the shop did it ever act up. They said both pumps were making grinding noises and wouldn't work. Got it home and both pumps worked right away. Except port pump which shortly quit working and started popping breaker. Can't get that one to work again.

CantRepeat
07-13-2014, 07:15 PM
This thread talks about repairing the pumps.

http://www.mastercraft.com/teamtalk/showthread.php?t=42810

There is also a TT member that sells the bearings and seals. You might get lucky on a repair. As stated, pumps mounted with the pump head in the up position burn of pretty regularly. I suggest whichever you choose, rebuild or replace, install them with the pump down!!

bturner2
07-14-2014, 08:38 AM
Both of my rear pumps were mounted upside down and both failed. Flipped them over about 3 years ago and they've been trouble free since.

Stefan
07-14-2014, 09:17 AM
MC seems to mount most the pumps upside down on most the boats I've seen and that although it's been going around these forums as long as I'm here, I just dont get it, is nobody reading this? Or is it going to take an expensive consultant in a couple of years to figure how to cut the costs on the 5-year warranty plans?

andersonmc
07-14-2014, 01:44 PM
For those of you that have the port side pump mounted upside down how do you mount it? Being the bracket is on opposite side.

G-Star
07-14-2014, 01:50 PM
For those of you that have the port side pump mounted upside down how do you mount it? Being the bracket is on opposite side.

http://www.mastercraft.com/teamtalk/showthread.php?t=37078&page=3

Rotate the pump head 180 degrees.

andersonmc
07-14-2014, 02:13 PM
http://www.mastercraft.com/teamtalk/showthread.php?t=37078&page=3

Rotate the pump head 180 degrees.

I understand flipping the pump 180 degrees but if my pump is not wired for reverse (separate pump for empty bag) then how do I wire it?

Jerseydave
07-14-2014, 02:26 PM
I have 2 rear Jabco reversible pumps that seem to be having issues. I saw on wakemakers that they suggest not installing upside down or it will cause pump to fail sooner then later. When I bought the boat the port side was installed upside down. Is this how Mastercraft does them from the factory?

My second question is if I truly do have a pump issue. Port side pump will only work every so often? How do you know when your pumps are fried? Its popping the breaker when pump won't turn. I assume the motor is locked up? No shorts and its getting power.

I had the same problem a few years back. I replaced my impellers from black to green, no more problems with popping breakers or pump not running. If you don't have green impellers yet get them first and try it. Black are too stiff and sometimes the pump won't spin.

G-Star
07-14-2014, 02:30 PM
I had the same problem a few years back. I replaced my impellers from black to green, no more problems with popping breakers or pump not running. If you don't have green impellers yet get them first and try it. Black are too stiff and sometimes the pump won't spin.

Apparently orange is the new green?
http://www.wakemakers.com/johnson-ultra-ballast-pump-orange-impeller.html

WakeWise
07-14-2014, 03:38 PM
And more expensive then the Green ones.

andersonmc
07-14-2014, 06:19 PM
Ordered 2 green impellers today from Wakemakers. Now I just need to figure out how to rewire pump when I flip it over.

Footin
07-14-2014, 06:30 PM
Ordered 2 green impellers today from Wakemakers. Now I just need to figure out how to rewire pump when I flip it over.

You don't need to rewire it, loosen the head and spin it 180 degrees.

Footin
07-14-2014, 06:31 PM
What's the difference between the green and orange beside a few bucks.

Mastercraft13
07-14-2014, 06:37 PM
I would guess more neoprene vs rubber.

CantRepeat
07-14-2014, 06:52 PM
Ordered 2 green impellers today from Wakemakers. Now I just need to figure out how to rewire pump when I flip it over.

You don't need to rewire it, loosen the head and spin it 180 degrees.

If you don't have room to rotate the pump head you can just switch the two main wires at the switch.

In the wiring schematic, first post in this thread, you can see the primary wires, blue and yellow, would need to be swapped at the ballast pump switch by the helm.

http://www.mastercraft.com/teamtalk/showthread.php?t=40934

Each pump switch would have different colored primary wires.

andersonmc
07-14-2014, 07:39 PM
If you don't have room to rotate the pump head you can just switch the two main wires at the switch.

In the wiring schematic, first post in this thread, you can see the primary wires, blue and yellow, would need to be swapped at the ballast pump switch by the helm.

http://www.mastercraft.com/teamtalk/showthread.php?t=40934

Each pump switch would have different colored primary wires.

Can I still rewire my pump even know I Have a separate empty pump? I don't have my Jabco set up to reverse right now.

andersonmc
07-14-2014, 09:25 PM
Ended up just switching the wires at the pump. Wakemakers said since I didn't have the pump set up for reverse I couldn't change wires at switch.

swatguy
07-14-2014, 11:21 PM
You don't even have to take your pump apart. All you do is pop your plate off on the rocker switch, pop your switch box off the wall or dash, rotate the switch box 180 degrees , reinstall the switch box and then the rocker plate VIOLA pump flow is now reversed.

Or you can do as mentioned and flip the brass head on the pump 180.

Ended up just switching the wires at the pump. Wakemakers said since I didn't have the pump set up for reverse I couldn't change wires at switch.

So are you saying you have two impellar style pumps for each bag? Are you then saying each pump only has a on or off switch not a 3 position rocker switch, That would be very strange and double the cost for no reason to whomever installed that system. Makes zero sense

andersonmc
07-14-2014, 11:48 PM
You don't even have to take your pump apart. All you do is pop your plate off on the rocker switch, pop your switch box off the wall or dash, rotate the switch box 180 degrees , reinstall the switch box and then the rocker plate VIOLA pump flow is now reversed.

Or you can do as mentioned and flip the brass head on the pump 180.



So are you saying you have two impellar style pumps for each bag? Are you then saying each pump only has a on or off switch not a 3 position rocker switch, That would be very strange and double the cost for no reason to whomever installed that system. Makes zero sense

Ya PO skimped on install and just put new pumps in. Don't know if he didn't know how to rewire or didn't want to pay extra cost to do it right. At least he upgraded the pumps for me. He left the OEM drain pumps on it. Fills fast but drains slow. I'm going to do it right this winter but for now it works.

blackhawk
07-14-2014, 11:55 PM
Yea, I am with Swatguy. Seems strange that you have one Jabsco pump for filling and another Jabsco for emptying.

Functionally, the Jabsco pumps don't care how they are mounted. They will pump the same sideways, right side up, and upside down. The reason it is best to mount them with the pump head down is that any leaks go into your bilge instead of on top of the motor. There is a spring loaded lip seal that presses into the pump body and seals around the rotating shaft. When theses seals get worn, you will have water leakage.

andersonmc
07-15-2014, 12:03 AM
Yea, I am with Swatguy. Seems strange that you have one Jabsco pump for filling and another Jabsco for emptying.

Functionally, the Jabsco pumps don't care how they are mounted. They will pump the same sideways, right side up, and upside down. The reason it is best to mount them with the pump head down is that any leaks go into your bilge instead of on top of the motor. There is a spring loaded lip seal that presses into the pump body and seals around the rotating shaft. When theses seals get worn, you will have water leakage.

No I just have one Jabsco to fill. I have a cheapy pump to empty (aerator pump is what I think their called) He left the cheap empty pumps on and never switched the wiring to reverse on the Water puppy's he bought.

CantRepeat
07-15-2014, 08:28 AM
No I just have one Jabsco to fill. I have a cheapy pump to empty (aerator pump is what I think their called) He left the cheap empty pumps on and never switched the wiring to reverse on the Water puppy's he bought.

Well, then go to that thread I posted and change you wiring system so you can fill and empty with your jabsco pump. You paid for them and they cost a few pennies so you might as well get all you can from them!!

I, we, all assumed you had them wire to both fill and empty.