Jabsco Toilet Repair

[landonshaw]

Just finished fixing my Jabsco toilet and was wondering if anyone else has run into this problem. The pumping cylinder had a crack at the bottom so I purchased a replacement kit. Took the old one off and put on the new and it leaked worse than the broken one but up by the handle. After redoing a number of times it seemed as though the rubber gasket was just not thick enough so I cut the flaps off of the old and placed it under the new. No more leak. Has anyone else had this problem?

[GypsyHawk]

I found that everytime I dismantled the pump for maintenance and lubrication that it would leak from the top cover upon reassembly. By trial and error I learnt that it wasn't the gasket but my reassembly technique. Those screws have to be tightened up very slowly with equal pressure across all corners. That means once all screws are in very loosely, tighten up slowly, moving from adjacent screw to adjacent screw. Not so much pressure that you crack the plastic, which I have done to no real ill effect, but still tight.

This always works for me.

[nes]

Just rebuilt my Jasco toilet pump last month, no leaks (second time) but I did break the out one set of threads the first time.

[landonshaw]

Thanks, I'll redo without the second gasket and see what happens. I was tightening down criss-crossing like on a tire, although I did not do it slowly I'm sure.

[SurferShane]

Mine didn’t work and I found a factory refit kit on the boat. After nearly throwing in the towel and sticking to a bucket it was like a two day mission to get it working again. Buggered if I can remember exactly what the problem was as after so many attempts at getting it functioning I would prefer to just forget about the whole experience and savour the memories of being anchored under Refuge Falls with a boat full of good wine and food.

Same occasion I tried to refit the saltwater galley pump after having instant success with the freshwater twelve months previously. I am seriously still thinking I should reserve the seacock for a basic water maker. Bloody brand is as cursed as the Percy’s!

[GordMay]

Originally Posted by landonshaw

... I was tightening down criss-crossing like on a tire ...

YES.

Originally Posted by GypsyHawk

... tighten up slowly, moving from adjacent screw to adjacent screw...

NO.

BOLT TIGHTENING SEQUENCE FOR FLANGES.
➥ http://www.bossinc.com/Bolttorque.pdf

[GypsyHawk]

This is good, thanks, and actually what I meant. Wrong use of word "adjacent" I think.

[Therapy]

Mine just squeals.
Sounds like it is on the "piston rod" as it enters the housing.
Nothing stops it for long.
Silicone, Boshield, grease.

??

[JiffyLube]

I used the rebuid kit once on our Jabsco head, and I didn't have any problems. It will get a little hard to pump sometimes because the O-ring on the piston gets dry, but a little WM Head Lube frees it right up. I have to say our Jabsco actually works better for me than the toilet at home, but it would be nicer if I didn't have to pump the piston.