In a recent thread, Kloudie1 shared that SKF makes a product called Speedi-Sleeve. It is a very thin walled sleeve that fits tightly over a scored shaft so that a new seal has a smooth surface rotating through it.
When inspecting again the shaft after a recent not quite successful new seal attempt to stop my Jabsco 2760-003 seawater pump from leaking, I noticed it (the shaft) was in fact scored.
The 2760 pump has a 3/8” diameter shaft = 9.525mm. SKF's smallest speedi-sleeve is 11.99 mm. I could not locate another manufacturer offering a 3/8” sleeve.
But I did come across on ebay a 10mm O.D. stainless steel tube with a very thin 0.3mm wall – which yielded an I.D. only 4/1000” smaller than 3/8”. Maybe worth a DIY sleeve attempt? I ordered.
A 3/8” drill bit easily reamed out the 4/1000” ID undersize. The reamed out length slid snugly over the shaft. The tube is the welded type, so it had a very slight ridge along the weld line. Scraping with a sharp box knife took this down. Then I smoothed with 1500 grit wet/dry sandpaper. With a Dremmel cut-off wheel, I cut a length slightly longer than the 7mm thickness of the oil seal body. Smoothed out the burrs so the seal wouldn't be damaged during installation. Put a very thin layer of epoxy to the inside of the sleeve. Then with light taps on the sleeve lip using the blade edge of a slot head screw driver, slowly drove the sleeve along the shaft to the spot where the seal resides. Wiped off the epoxy that had transferred to the shaft. After the epoxy cured, I reassembled as normal the seal, o-ring, cam, impeller, gasket and cover.
Mounted on the engine today. No drips after 10 minutes running. Will report back again after an outing or two.
While at it, I did the same to my older previous pump as well.
When inspecting again the shaft after a recent not quite successful new seal attempt to stop my Jabsco 2760-003 seawater pump from leaking, I noticed it (the shaft) was in fact scored.
The 2760 pump has a 3/8” diameter shaft = 9.525mm. SKF's smallest speedi-sleeve is 11.99 mm. I could not locate another manufacturer offering a 3/8” sleeve.
But I did come across on ebay a 10mm O.D. stainless steel tube with a very thin 0.3mm wall – which yielded an I.D. only 4/1000” smaller than 3/8”. Maybe worth a DIY sleeve attempt? I ordered.
A 3/8” drill bit easily reamed out the 4/1000” ID undersize. The reamed out length slid snugly over the shaft. The tube is the welded type, so it had a very slight ridge along the weld line. Scraping with a sharp box knife took this down. Then I smoothed with 1500 grit wet/dry sandpaper. With a Dremmel cut-off wheel, I cut a length slightly longer than the 7mm thickness of the oil seal body. Smoothed out the burrs so the seal wouldn't be damaged during installation. Put a very thin layer of epoxy to the inside of the sleeve. Then with light taps on the sleeve lip using the blade edge of a slot head screw driver, slowly drove the sleeve along the shaft to the spot where the seal resides. Wiped off the epoxy that had transferred to the shaft. After the epoxy cured, I reassembled as normal the seal, o-ring, cam, impeller, gasket and cover.
Mounted on the engine today. No drips after 10 minutes running. Will report back again after an outing or two.
While at it, I did the same to my older previous pump as well.
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