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Thread: Rudder Bushing Play
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07-22-2008, 11:09 PM #1Member
- Join Date
- Aug 2007
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- Lake Webster
- Posts
- 66
Rudder Bushing Play
I have a vibration sound on my 2000 Boomerang @ 2100-2300rpm. Prop looks flawless (old prop in picture) and do not recall a strike on a very well known lake.
I am wondering if it could be a loose rudder. The rudder shaft goes through the fixed wake plate on this model. See attached picture. How much play should exist in the rudder bushing in the wakeplate? I can occilate the bottom tip of the rudder by hand. Is it possible the rudder is vibrating under load at that RPM? Where can I get a replacement bushing if needed? How difficult of a repair?
Thanks
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07-22-2008, 11:53 PM #2Senior Member
- Join Date
- Oct 2007
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- Panama City Florida
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- 1,798
I just sold our 1975 MasterCraft. Last year I could swing the rudder about an inch either way, didn't cause any vibrations. I found a new rudder port but hadn't yet got a new rudder before I sold it. There was no bushing in this system and I don't think they have them now, It was brass on brass. If you have a vibration I would be looking at the prop closely or even take it to a prop shop if you have one around.
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07-23-2008, 12:46 AM #3
I would say that you need a new rudder bushing or possibly a new shaft. The rudder should have just a tiny bit of freeplay in it, but anymore than that you will probably need a new bushing. Also your shaft may be out of alignment or may be bent. As far as checking that I'm not really sure how to do it. I would just take it to your dealer and have them check everything and write up an estimate. Check out www.skidim.com for parts you may need.
'99 Outback (Maroon/Creme) GM 350/Holley 4150
550 HRS
LaSalle-Peru, IL
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07-24-2008, 02:20 PM #4
Any play in the prop shaft strut bushing?
Share The Water
2006 Outback V
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07-24-2008, 02:27 PM #5Senior Member
- Join Date
- Dec 2006
- Location
- Thomasville, GA
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- 198
I had a Boomerang so I know what you mean on the shaking/vibration, although mine did this mainly under a load. Mine was more of a shake in the wheel so I don't know if this is quite what you are describing. I had to replace the rudder bushing (the one located on the wake plate) and also the strut bushing. Got all the parts from Discount Inboard Marine.
Monty2001 Outback LS
" Son, I'm Captain Jack Sparrow "
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07-24-2008, 09:15 PM #6Sled491 Guest
I'm with Tarkus on this one. I would check the strut bushing. How many hrs on the boat. I know it's 8 yrs old but maybe you have no hrs. I hit a stump or log or something last summer on a river I've been skiing for a decade. I couldn't find a thing on the prop yet there was obviously a slight bend in one of the blades because that this shook like crazy over like 1800 RPM. So I wouldn't rull that out either.