TWL: Prop Shafts
I have just received the results of a survey of a 1984 42' Present Sundeck
Trawler with twin Ford Lehman 135's with Borg Warner Velvet Drives.. The
boat did very well in the survey. The only thing that came up is that we
went to sea trial there was a bad vibration when putting the boat into geat
at lower rpm's and a whining sound that you could hear coming from below the
aft cabin when the boat was at cruise.
I went into the engine room while the boat was under power and the port prop
shaft was vibrating much more than the starboard shaft was. There was also
a very small trans fluid leak from the rear seal on the port borg warner
velvet drive. After hauling the boat we also realized that the prop was
loose on the same shaft. After tightening the prop and re-launching the
boat a small amount of vibration went away but was basically still there.
The Surveyer told me that he believes the port prop shaft was slightly bent
and that I would probably want to get it pulled and straightened. He
believes that the trans leak, loose prop and vibration are all caused by the
bent shaft.
We do not believe that this is a deal breaker at this point because the boat
is so reasonably priced, however, the boat is located about a good 4 day
cruise from what will be it's home port in Annapolis when I complete the
purchase. I am familiar with engines and mechanically inclined. but I have
never done anything on this scale before nor do I know if I want to.
Here are my questions:
-
Should I risk bringing the boat on a 4 day cruise with a vibrating prop
shaft so I can get it to my home port and then dry dock it at a local yard
for the repairs or should I have it done where it is located now before the
journey? -
Has anyone on the list had issues with prop shafts in the past? If so,
what is involved in pulling a shaft?
Any insight would be appreciated.
Thanks
Phil
<<1. Should I risk bringing the boat on a 4 day cruise
with a vibrating prop
shaft so I can get it to my home port and then dry
dock it at a local yard
for the repairs or should I have it done where it is
located now before the
journey? >>
The Transmission output shaft seal is already leaking
and will have to be replaced. Some further wear on
the cutlass bearing will probably result, but this,
too may already need replacement. If the vibration
gets much worse, you can always shut down and run on
one engine. What's the point of twins if you won't
run on one engine when the need arises? I'd go ahead
with the 4 day trip. I recently traveled to Cuba and
back on a Gulfstar 49 with one slightly bent shaft,
with the same complaints as your boat. The vibration
did not get worse, and the trip was completed without
incident.
<<2. Has anyone on the list had issues with prop
shafts in the past? If so,
what is involved in pulling a shaft? >>
Haul boat, remove prop, disconnect shaft from
transmission coupling (this may be the toughest part),
pull shaft out. Not a big job unless the shaft
coupling is corroded firmly onto the shaft. The
hardest part of your job will probably be replacing
the transmission shaft seal.
=====
Mark Richter, M.E., aboard M/V Winnie the Pooh,
custom Morgan 46 Pilothouse Efficiency Trawler.
"Mark's Mobile Marine" electrical systems repair & consulting. Homeport Stuart, FL
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Not a big problem unless the rudder is in the way
regards
docmoss
----- Original Message -----
From: "Mark Richter" Richter-Pooh@rocketmail.com
To: "Phil Ryker" PRyker@Affinity.com; trawler-world-list@samurai.com
Sent: Monday, April 30, 2001 10:45 AM
Subject: Re: TWL: Prop Shafts
<<1. Should I risk bringing the boat on a 4 day cruise
with a vibrating prop
shaft so I can get it to my home port and then dry
dock it at a local yard
for the repairs or should I have it done where it is
located now before the
journey? >>
The Transmission output shaft seal is already leaking
and will have to be replaced. Some further wear on
the cutlass bearing will probably result, but this,
too may already need replacement. If the vibration
gets much worse, you can always shut down and run on
one engine. What's the point of twins if you won't
run on one engine when the need arises? I'd go ahead
with the 4 day trip. I recently traveled to Cuba and
back on a Gulfstar 49 with one slightly bent shaft,
with the same complaints as your boat. The vibration
did not get worse, and the trip was completed without
incident.
<<2. Has anyone on the list had issues with prop
shafts in the past? If so,
what is involved in pulling a shaft? >>
Haul boat, remove prop, disconnect shaft from
transmission coupling (this may be the toughest part),
pull shaft out. Not a big job unless the shaft
coupling is corroded firmly onto the shaft. The
hardest part of your job will probably be replacing
the transmission shaft seal.
=====
Mark Richter, M.E., aboard M/V Winnie the Pooh,
custom Morgan 46 Pilothouse Efficiency Trawler.
"Mark's Mobile Marine" electrical systems repair & consulting. Homeport
Stuart, FL
What a weekend. My Racors are finally in (thanks a
bunch to those of you on this list that helped me make
this happen), out with the Fram filter and copper fuel
lines. Now the question becomes what to do with the
tube and the old filter system, and old filters??
Also I am sad to say I have a 5 gallon jug of diesel
and water mix. I need to get rid of it somewhere, in
an environmentally sound way. What places will take
this? Im treating it with some kind of microbe that is
oil eating cleaner. not sure I have much faith in this
stuff.
Dan
37 Roughwater
"Wen I Dream"
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If you haven't used an alcohol based product to try to make it burnable,
it's easy. Pour some diesel into a clear container - gallon milk bottle or
the such. Within a few minutes, the water will be on the bottom, the diesel
on the top. Decant off the diesel. Pour the water plus a tiny amount of
diesel that doesn't separate into a waste container. Keep doing this until
you've separated 99% of the diesel off. I pour this back into the fuel
tank. Then use a oil "diaper" to absorb the diesel still left sitting on
top of the waste water. Bag the diaper and put it in the trash. Pour the
water down the drain.
Tom
At 02:45 PM 4/30/2001 -0700, Dan Symula wrote:
Also I am sad to say I have a 5 gallon jug of diesel
and water mix. I need to get rid of it somewhere, in
an environmentally sound way. What places will take
this? Im treating it with some kind of microbe that is
oil eating cleaner. not sure I have much faith in this
stuff.
At 06:16 PM 4/30/01 -0800, you wrote:
If you can't re-use the fuel, check with your city solid waste department -
many cities often have a household hazardous waste collection program where
they'll accept your used fuel, free. Likewise the filters. Another option
for
As I recall, federal law requires all marinas to provide waste oil
facilities for their users. That includes garbage. If they don't have such
they can be heavily fined.
Capt. Mike Maurice
Near Portland Oregon.
Dan,
If you can't re-use the fuel, check with your city solid waste department -
many cities often have a household hazardous waste collection program where
they'll accept your used fuel, free. Likewise the filters. Another option
for the filters is to incinerate them somehow, burning out the oily residue,
then toss in trash.
Bob Deering
Juneau Alaska
-----Original Message-----
From: owner-trawler-world-list@samurai.com
[mailto:owner-trawler-world-list@samurai.com] On Behalf Of Dan Symula
Sent: Monday, April 30, 2001 1:46 PM
To: trawler-world-list@samurai.com
Subject: TWL: what to do with used diesel fuel and filters
What a weekend. My Racors are finally in (thanks a
bunch to those of you on this list that helped me make
this happen), out with the Fram filter and copper fuel
lines. Now the question becomes what to do with the
tube and the old filter system, and old filters??
Also I am sad to say I have a 5 gallon jug of diesel
and water mix. I need to get rid of it somewhere, in
an environmentally sound way. What places will take
this? Im treating it with some kind of microbe that is
oil eating cleaner. not sure I have much faith in this
stuff.
Dan
37 Roughwater
"Wen I Dream"
Do You Yahoo!?
Yahoo! Auctions - buy the things you want at great prices
http://auctions.yahoo.com/
As I recall, federal law requires all marinas to provide waste oil
facilities for their users. That includes garbage. If they don't have such
they can be heavily fined.
What Federal Law ??
My marina stopped taking used oil after County EPA inspector told
them they had to put in a concrete pad under the waste oil tank - so they
took away the tank !!!
Brillant - just Brillant !!
Ken
Would a bad cutlass bearing be an indication of the
shaft being out of alignment? What are some causes of
bad cutlass bearing? What would entail to have the
shaft aligned properly?
Dan
37 Roughwater
"Wen I Dream"
Do You Yahoo!?
Yahoo! Auctions - buy the things you want at great prices
http://auctions.yahoo.com/
At 09:51 AM 5/1/01 -0700, you wrote:
Would a bad cutlass bearing be an indication of the
shaft being out of alignment? What are some causes of
bad cutlass bearing? What would entail to have the
shaft aligned properly?
Dan
---=========================
The bearing should not cause alignment problems. Under water check to see
if the shaft shakes by hand, on land see if the shaft shakes and if the
wear is approaching the metal or plastic shell. The wear may be uneven, not
to worry the strut may not be in perfect alignment with the shaft. This
condition exists on many smooth running boats.
.
Captain Al Pilvinis
"M/V Driftwood"--Prairie 47
2630 N.E. 41st Street
Lighthouse Point, Fl 33064-8064
Voice 954-941-2556 Fax 954 788-2666
Email yourcaptain@earthlink.net
Website http://home.earthlink.net/~yourcaptain