SoCal Jet Boats
Tech Talk => Engine Mechanical / Electrical => Topic started by: cmayer on December 21, 2015, 07:40:24 PM
-
So at the avi trip I kept hearing a light knocking \ clinking sound that would come and go not specific to RPM. No metal in the oil, so I changed fluids, greased everything I could get to and took it to Parker the next month. Ran great for three days and then bam loud clinking like a marble bouncing around near the thrust bearing, back of the engine.
What's the best way to separate an engine \ jet with three point mount to isolate whether it's pump, engine, or drive line?
I couldn't find foreign object looking through the intake nor handhole of the pump; was hoping it was just a rock or something easy.
-
You can unbolt the H-bar from the flywheel but its tuff with it in the boat, and I'm not sure if you will be able to clear the flywheel to fire it. I'll bet its your thrust bearing. That what mine sounded like but i also had a humm that changed with RPM. Just my guess....
-
Sounds like maybe a u joint going. Oil pressure fine?
Sent from my iPhone using SoCal Jet Boats
-
I kinda wonder if it's in the Ujoints also like Jims says, or even the Jet. Being you greased it and it went away for 3 days and came back sounds like you lubed it but now the lube is gone. Lube it again and see if it goes away again. Just a possibility.
-
Yes, oil pressure is good. Looks like something has to come out, engine or pump, to check the u joints anyhow.
-
My pump makes a growling noise but only when you walk up behind it... Lol🤔😁
Sent from my iPhone using SoCal Jet Boats
-
My pump makes a growling noise but only when you walk up behind it... Lol🤔😁
Sent from my iPhone using SoCal Jet Boats
😂😂😂
Gimme that BECKY!
-
Yes, oil pressure is good. Looks like something has to come out, engine or pump, to check the u joints anyhow.
. That should not be the case.
Sent from my iPhone using SoCal Jet Boats
-
Is it a three point mount Craig?
-
Could be loose pto bolts?
-
How much slip is available in the yoke? Could be joint bind.
-
Pics Please.
-
Is it a three point mount Craig?
Hey Dan, yes it's a 3 point. Here are some pictures. Looks like there's a bunch of grease on the inside of the bell housing; do u joint fling grease when they're going bad?
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi94.photobucket.com%2Falbums%2Fl81%2Fcmayer31%2FBoat%2FRepairs%2FIMG_20151223_125126420_zpscto0tlg3.jpg&hash=6c66c00c978da3966a29580fd5ea6b4beadad3d6) (http://s94.photobucket.com/user/cmayer31/media/Boat/Repairs/IMG_20151223_125126420_zpscto0tlg3.jpg.html)
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi94.photobucket.com%2Falbums%2Fl81%2Fcmayer31%2FBoat%2FRepairs%2FIMG_20151223_124946872_zpsdadbudu5.jpg&hash=8d2b517f48c1b3c6381ad7f5a971235db994e540) (http://s94.photobucket.com/user/cmayer31/media/Boat/Repairs/IMG_20151223_124946872_zpsdadbudu5.jpg.html)
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi94.photobucket.com%2Falbums%2Fl81%2Fcmayer31%2FBoat%2FRepairs%2FIMG_20151223_125153434_zpswfgzibig.jpg&hash=de62a2442df10511fdece80fda3903fa7d9a5156) (http://s94.photobucket.com/user/cmayer31/media/Boat/Repairs/IMG_20151223_125153434_zpswfgzibig.jpg.html)
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi94.photobucket.com%2Falbums%2Fl81%2Fcmayer31%2FBoat%2FRepairs%2FIMG_20151223_124957049_zpsrzwgdwg6.jpg&hash=042b7216eb9a1107b78155158956b5ae73719ac3) (http://s94.photobucket.com/user/cmayer31/media/Boat/Repairs/IMG_20151223_124957049_zpsrzwgdwg6.jpg.html)
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi94.photobucket.com%2Falbums%2Fl81%2Fcmayer31%2FBoat%2FRepairs%2FIMG_20151223_125257182_zps1thmtxtt.jpg&hash=4d73983ee4d1acf28f81b1225091e17f5627d164) (http://s94.photobucket.com/user/cmayer31/media/Boat/Repairs/IMG_20151223_125257182_zps1thmtxtt.jpg.html)
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi94.photobucket.com%2Falbums%2Fl81%2Fcmayer31%2FBoat%2FRepairs%2FIMG_20151223_125205886_zpsirai8tut.jpg&hash=b7b45f62082b59e88e399f78f6615c3e49c46de6) (http://s94.photobucket.com/user/cmayer31/media/Boat/Repairs/IMG_20151223_125205886_zpsirai8tut.jpg.html)
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi94.photobucket.com%2Falbums%2Fl81%2Fcmayer31%2FBoat%2FRepairs%2FIMG_20151223_125331330_zpsnn5bwqly.jpg&hash=74954eb12a3d1e3c0086a7e2c3a1ea552ef3a6cb) (http://s94.photobucket.com/user/cmayer31/media/Boat/Repairs/IMG_20151223_125331330_zpsnn5bwqly.jpg.html)
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi94.photobucket.com%2Falbums%2Fl81%2Fcmayer31%2FBoat%2FRepairs%2FIMG_20151223_125339260_zpscpoqj6bb.jpg&hash=f6251c429cbfeb6907e1149a7a736e96988f9eb7) (http://s94.photobucket.com/user/cmayer31/media/Boat/Repairs/IMG_20151223_125339260_zpscpoqj6bb.jpg.html)
Kind of hard to get the flash of the phone in there or flashlight and camera.
-
How much slip is available in the yoke? Could be joint bind.
I know it's a dumb question, but how do I check the slip? Unbolt the PTO and see how much it slides?
I dry fired the boat and there were no unusual sounds. I put my ear to a screwdriver and placed it on the pump housing, bell housing, thrust bearing housing, etc. and didn't hear the pinking / clinking / whining sound anywhere.
Anyhow, here are the shots from the grease zerk side of the u joints. In all honesty, I can't remember adding grease to these and probably meant to, but didn't.
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi94.photobucket.com%2Falbums%2Fl81%2Fcmayer31%2FBoat%2FRepairs%2FIMG_20151223_133248204_zps2czq5unn.jpg&hash=6ed2c042cb9060ba9a11b6cf7aac16b9b5d8bb0a) (http://s94.photobucket.com/user/cmayer31/media/Boat/Repairs/IMG_20151223_133248204_zps2czq5unn.jpg.html)
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi94.photobucket.com%2Falbums%2Fl81%2Fcmayer31%2FBoat%2FRepairs%2FIMG_20151223_133234430_zpsqw6vuu9c.jpg&hash=824df97a35b333b23295b42453addc6f9a9efbe4) (http://s94.photobucket.com/user/cmayer31/media/Boat/Repairs/IMG_20151223_133234430_zpsqw6vuu9c.jpg.html)
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi94.photobucket.com%2Falbums%2Fl81%2Fcmayer31%2FBoat%2FRepairs%2FIMG_20151223_133225240_zpst2u9bpg5.jpg&hash=4b801d12a4d9b080b4963cc69bff83c6b1977094) (http://s94.photobucket.com/user/cmayer31/media/Boat/Repairs/IMG_20151223_133225240_zpst2u9bpg5.jpg.html)
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi94.photobucket.com%2Falbums%2Fl81%2Fcmayer31%2FBoat%2FRepairs%2FIMG_20151223_133215608_zps9fpknfca.jpg&hash=5e46898ae04ed942ce83b51ae142516bffff5df2) (http://s94.photobucket.com/user/cmayer31/media/Boat/Repairs/IMG_20151223_133215608_zps9fpknfca.jpg.html)
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi94.photobucket.com%2Falbums%2Fl81%2Fcmayer31%2FBoat%2FRepairs%2FIMG_20151223_133207966_zpsbejtl7nm.jpg&hash=7ec90d747939ec862e4b594cd8fbd06b111f3226) (http://s94.photobucket.com/user/cmayer31/media/Boat/Repairs/IMG_20151223_133207966_zpsbejtl7nm.jpg.html)
-
And for the last question of the day, what damage did I do by using a moly fortified grease on the thrust bearing? :banghead:
[attach=1]
Valvoline® Moly-Fortified Multi-Purpose Grease is a superior general grease fortified with molybdenum disulfide to provide excellent extreme-pressure and anti-wear protection for disc-brake wheel bearings, chassis, suspension and universal joints.
Lubricates at temperatures ranging from -10°F to 275°F
NLGI #2 Grade LB Lithium 12-Hydroxystearate EP Grease
Ford M1C75B; NLGI LB
Ford - Lincoln - Mercury
A premium quality moly fortified extreme pressure grease for automobiles and industrial lubrication including ball jointsuspension systems, universal joints, chassis and steering linkages. Recommended as a wheel bearing lubricant on certain passenger cars and trucks including Ford, Lincoln and Mercury vehicles equipped with disc brakes. Meets or exceeds NLGI GC-LB specifications.