SoCal Jet Boats
Tech Talk => Jet Pumps => Topic started by: hbkeith on May 06, 2018, 07:28:43 PM
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Hey guys,
I'm an experienced mechanic but new to the jet boat world and one of my u joints went bad over the weekend and I have a few questions that about replacement. I have a sport pack 454 with a Dominator jet. There is a bell housing with about a 3" hole in it I'm assuming for inspection and servicing? I removed the cover from the hole and can see the grenade u joint, its the one closest to the jet. Now for my questions
1) It looks like I will need to pull the motor so when I do will the splined yoke slide of the pump shaft by moving the engine forward?
2) I have through transom exhaust with 4" rubber hoses that connect the manifolds to the pipes going through the transom. Will these come off as I move the engine forward? They seem too stiff to just pull out of the way. I have a few more questions but will wait to see if I'm on the right track. Thank you for any help or suggestions! ;)
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Hey guys,
I'm an experienced mechanic but new to the jet boat world and one of my u joints went bad over the weekend and I have a few questions that about replacement. I have a sport pack 454 with a Dominator jet. There is a bell housing with about a 3" hole in it I'm assuming for inspection and servicing? I removed the cover from the hole and can see the grenade u joint, its the one closest to the jet. Now for my questions
1) It looks like I will need to pull the motor so when I do will the splined yoke slide of the pump shaft by moving the engine forward?
2) I have through transom exhaust with 4" rubber hoses that connect the manifolds to the pipes going through the transom. Will these come off as I move the engine forward? They seem too stiff to just pull out of the way. I have a few more questions but will wait to see if I'm on the right track. Thank you for any help or suggestions! ;)
Yes & yes. When you start to lift the engine, have a little room to push the boat trailer back. You might have to bump things around a bit to get it loose, but the engine will slide out. Spline is about 3 inches long on the pump shaft. I started out my working life as a mechanic before deciding I only liked wrenching for myself. Really like jet boats. Take this apart and you'll see everything is pretty much straight forward.
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Great, Thank you! Is there any trick to lining up the splines during installation?
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Great, Thank you! Is there any trick to lining up the splines during installation?
None that I know of. I mark my drive shaft so I put it back exactly as it came off, if the engine & pump shaft don't move then it'll line back up. When I rebuild my bowl is off, easy to turn pump shaft to line it up.
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Thanks fro the help! Pulled the motor Friday after work swapped out the U joint assembly and had the motor back in and fired up the next morning. Gonna test it this comming weekend at Elsinore :thumbup:
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Thanks fro the help! Pulled the motor Friday after work swapped out the U joint assembly and had the motor back in and fired up the next morning. Gonna test it this comming weekend at Elsinore :thumbup:
I've heard of a sky hook, Just never seen one.
Good job!
Dan'l