First time poster so please be gentle if Im asking a dumb question. The boat is a twin set up so there are two 290a drives and Aq151b engines. The one side is smooth the other has a vibration/ growl at low Rpm only when in gear. Ive spent a lot of time reading on this topic and have check everything Ive read about that could be an issue that ive found but that doesnt mean I havent missed other post.
Ive taken both drives off because they both had some water in the oil and Im doing a complete reseal on both. I was hopping to find something obvious when i did this after reading a ton of posts.
This is what I know so far, the gimble bearings and seals look good in both and have no movement, the u-joints also look good no rust and feel good. All the bearings in the upper trans look and feel good with no play and the backlash feels about right havent put dial on it yet though. The lower bearings on the prop shafts feel good too. I check the shaft on the outdrive that had the noise before i took it out and it was with in a .001 of turning true, but when I pulled the outer cover to change the shaft seal there was major seal wear on the shaft so Im going to replace it. The center shaft has the same amount of play in both drives side to side and up and down with the center case removed from the lower. This is the only bearing thats had play and Im wondering if this could be the problem and or how much play should be in this shaft both in the lower needle bearins and also in the upper bearing just below the the tapered bearing?
Drives are both apart and can take pics or check anything that may need to be done. Thanks for your help.
Ive taken both drives off because they both had some water in the oil and Im doing a complete reseal on both. I was hopping to find something obvious when i did this after reading a ton of posts.
This is what I know so far, the gimble bearings and seals look good in both and have no movement, the u-joints also look good no rust and feel good. All the bearings in the upper trans look and feel good with no play and the backlash feels about right havent put dial on it yet though. The lower bearings on the prop shafts feel good too. I check the shaft on the outdrive that had the noise before i took it out and it was with in a .001 of turning true, but when I pulled the outer cover to change the shaft seal there was major seal wear on the shaft so Im going to replace it. The center shaft has the same amount of play in both drives side to side and up and down with the center case removed from the lower. This is the only bearing thats had play and Im wondering if this could be the problem and or how much play should be in this shaft both in the lower needle bearins and also in the upper bearing just below the the tapered bearing?
Drives are both apart and can take pics or check anything that may need to be done. Thanks for your help.