I just installed a JABSCO manual marine head and found that there is a very noticable leak at the discharge elbow hose connection. it is a 1.5" connection and I am using 1.5" heavy duty sanatation hose and it seems to slip on ok, ie, seems to fit, but it leaked. I realigned the hose and tightened the clamp twice to no avail. I put on a second hose clamp and it leaked at the same rate (10 ounces per minuite estimated, a pretty noticable flow, more than a drip anyway). I know I could goop up the connecter and hose with silicone and make it work.... but I shouldn't have to....should I? What's up with this? Leaking is Seattle, JIM
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When all else fails, read the directions 
However, it's almost always easier and less expensive to read 'em first. 'Cuz if you had, you'd know that your problem is caused by trying to use a 1.5" hose on a 1" fitting. Although the industry standard is 1.5", for reasons known ONLY to Jabsco, their standard discharge fitting on their toilets and their macerators are 1" ID. You can't do anything about the macerator except use a 1.5" x 1" reducer if your thru-hull is 1.5"...but they offer a 1.5" discharge fitting for the toilet if requested. Call 'em and request a 1.5" fitting--straight or 90, whichever you need--and that SHOULD solve your problem. And ALWAYS use two hose clamps--screws on opposing sides of the hose--on ALL sanitation system fittings (that's in the directions too).
However, it's almost always easier and less expensive to read 'em first. 'Cuz if you had, you'd know that your problem is caused by trying to use a 1.5" hose on a 1" fitting. Although the industry standard is 1.5", for reasons known ONLY to Jabsco, their standard discharge fitting on their toilets and their macerators are 1" ID. You can't do anything about the macerator except use a 1.5" x 1" reducer if your thru-hull is 1.5"...but they offer a 1.5" discharge fitting for the toilet if requested. Call 'em and request a 1.5" fitting--straight or 90, whichever you need--and that SHOULD solve your problem. And ALWAYS use two hose clamps--screws on opposing sides of the hose--on ALL sanitation system fittings (that's in the directions too).
Have you checked...
Have you checked to see if the new hose is putting a side load on the discharge fitting? I just installed a new manual Jabsco (and, contrary to what Peggy said, mine had 1.5" discharge)and had a similar problem. Turned out that by playing with the length and bend of the new hose, I could get the drip to stop. Seems that side load on the discharge fitting pinches the Joker valve on one side, causing it to weep on the opposite side. Good luck!
Have you checked to see if the new hose is putting a side load on the discharge fitting? I just installed a new manual Jabsco (and, contrary to what Peggy said, mine had 1.5" discharge)and had a similar problem. Turned out that by playing with the length and bend of the new hose, I could get the drip to stop. Seems that side load on the discharge fitting pinches the Joker valve on one side, causing it to weep on the opposite side. Good luck!
Interesting point, Jim...
First figure out WHERE it's leaking--the hose connection or where the fitting attaches to the pump...'cuz the flange on the joker valve is also the gasket that seals the fitting. If it's leaking from the hose...Even though the specs call for 1.5" discharge, Jabsco's standard discharge fitting is 1"...The clue that the fitting is NOT a 1.5" fitting is in whether the hose slips onto the fitting easily. Hose NEVER slips on the right size fitting easily unless the hose is so old and stretched that it should have been replaced too...it always has to be lubricated and usually heated too, to get it on. If you remove the fitting and take it to your local boat store that sells hose, I think you'll find that it matches a 1" hose. You can either call Jabsco for a replacement discharge fitting, or solve the problem by buying a foot of 1" hose, a 1" x 1.5" reducing adapter and 4 more hose clamps.
First figure out WHERE it's leaking--the hose connection or where the fitting attaches to the pump...'cuz the flange on the joker valve is also the gasket that seals the fitting. If it's leaking from the hose...Even though the specs call for 1.5" discharge, Jabsco's standard discharge fitting is 1"...The clue that the fitting is NOT a 1.5" fitting is in whether the hose slips onto the fitting easily. Hose NEVER slips on the right size fitting easily unless the hose is so old and stretched that it should have been replaced too...it always has to be lubricated and usually heated too, to get it on. If you remove the fitting and take it to your local boat store that sells hose, I think you'll find that it matches a 1" hose. You can either call Jabsco for a replacement discharge fitting, or solve the problem by buying a foot of 1" hose, a 1" x 1.5" reducing adapter and 4 more hose clamps.
Side loaded? Yes, I think so
Thanks for your comment Jim. I do believe there is a significant side load (see photo) and the leak came from one particular spot on the hose/fitting innerface (interface?) so I'll go back and see if I can relieve the side load. Peggy suggested the fitting might not be 1-1/2 inches, but I think it is because 1) I measured it, but it was hard to see the exact measurement w/o taking the head out and 2) the hose slipped on easily, but didn't have much, if any "slack" around it, ie, it didn't seem to be a sloppy fit. Anyway...back to the boat for a peak. I really appreciate all the quick help here...on Thanksgiving none the less! JIM
Thanks for your comment Jim. I do believe there is a significant side load (see photo) and the leak came from one particular spot on the hose/fitting innerface (interface?) so I'll go back and see if I can relieve the side load. Peggy suggested the fitting might not be 1-1/2 inches, but I think it is because 1) I measured it, but it was hard to see the exact measurement w/o taking the head out and 2) the hose slipped on easily, but didn't have much, if any "slack" around it, ie, it didn't seem to be a sloppy fit. Anyway...back to the boat for a peak. I really appreciate all the quick help here...on Thanksgiving none the less! JIM
Attachments
Jim, Second Jim's Side Loading
If the Jabsco has much side force, the flange will not seat properly and it will weep. Known from a lot of experience. As to the discharge size, easy to check but check the side load first. Good luck, Rick D.
If the Jabsco has much side force, the flange will not seat properly and it will weep. Known from a lot of experience. As to the discharge size, easy to check but check the side load first. Good luck, Rick D.
If 'side loading' is the issue...
Better check to see whether there's any on the tank...'cuz the net result of THAT is likely to be a crack in the discharge fitting weld in the tank. Fittings welds are strong, but they aren't designed to withstand a lot of side-to-side stress.
Better check to see whether there's any on the tank...'cuz the net result of THAT is likely to be a crack in the discharge fitting weld in the tank. Fittings welds are strong, but they aren't designed to withstand a lot of side-to-side stress.
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