SSCA
My new to me boat has Twin Disk MG 502 transmissions. The manual says to look at the lube plate for oil requirements. It also says pre-2002 trannys do not have this plate and mine are pre 2002.
Does anyone know what is the required oil for the MG 502 transmission?
Thanks
Dave Hart
Island Gypsy 44'
Lake Ontario
I finally joined yesterday. I had been considering it for a few years now
and, now that we have put Heart of Gold on the market, I decided I would
give it a try. As soon as the economy turns around and the boat sells and I
get to retire and we sell our house and we buy a condo and the kids get on
their own yadda, yadda, yadda then We will get a new boat and work our way
towards Commodore status and beyond. I do not have .02 worth of opinion on
the value of SSCA at this time but I guarantee I have lost more than the
cost of membership in the first five minutes that the stock market opened
today.
Greg & Jane Bowers
Heart of Gold
It is very important to use the correct lube, from a lubricity and
clutch-plate-life standpoint.
In the 90's, Twin Disc used Mobil Delvac 1240, and ONLY single-viscosity, not
multigrade.
This is apparently no longer available.
I would advise contacting the factory service department, in Racine, or their
distributor, Palmer Johnson, for the current exact spec.
Phil Little
--- On Wed, 9/24/08, David Hart davehrt@yahoo.com wrote:
From: David Hart davehrt@yahoo.com
Subject: T&T: Twin Disk Transmission oil
To: "T&T List" trawlers-and-trawlering@lists.samurai.com
Date: Wednesday, September 24, 2008, 6:37 AM
My new to me boat has Twin Disk MG 502 transmissions. The manual says to look
at
the lube plate for oil requirements. It also says pre-2002 trannys do not
have
this plate and mine are pre 2002.
Does anyone know what is the required oil for the MG 502 transmission?
Thanks
Dave Hart
Island Gypsy 44'
Lake Ontario
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Dave,
My new to me boat has Twin Disk MG 502
transmissions. The manual says to look at the
lube plate for oil requirements. It also says
pre-2002 trannys do not have this plate and mine are pre 2002.
Does anyone know what is the required oil for the MG 502 transmission?
One of my Twin Disc Manuals is # 1016313 titled
Marine Transmission Operator's Manual, and is for
a variety of TD gears. Original date March 1996,
updated to Rev 2, dated May 1999. As you said,
this manual just says to go by the oil specs on
the plate. Kinda SOL if you don't have that plate.
The other Twin Disc Manual is SM-179 # 1015924,
Rev. 2 titled: Model MG-502 and MG-502-1 Service
Manual (for) Marine Transmission Conventional, dated March 1982. It says:
Use API service class CD engine oils
which is certified by the oil company to pass
TO-2 or C-3 Test Specification. Also approved are
SAE API service class CC engine oil and MIL-L-2104B.
Oil viscosity: Note. Multi viscosity
oils (i.e. 10W-40, etc.) are not recommended and
should not be used in Twin Disc Marine Transmissions.
Weights: (Temps refer to sump oil temp and oil in heat exchanger.)
Steady operating condition below 1050 F
- This operating condition is NOT approved.
During startup, 320 F Minimum and steady
operating conditions of 150-1850 F: SAE viscosity number 30 engine oil
During startup, 320 F Minimum and steady
operating conditions of 175-2100 F: SAE viscosity number 40 engine oil
Steady operating condition over 2000 F -
This operating condition is NOT approved.
I don't know the vintage of your engines, but
this is what is applicable to my TD gears in the
Celestial. The engines were built in 1986.
Take care and be safe.
Wayne
Celestial
Albin 43 Sundeck
Near Panama City, FL
Dave and All,
OOPS, I used the degree symbol in the temps and it came back as a 0.
Sorry 'bout that. The correct numbers are:
Twin Disc Manual is SM-179 # 1015924,
Rev. 2 titled: Model MG-502 and MG-502-1 Service
Manual (for) Marine Transmission Conventional, dated March 1982. It says:
Use API service class CD engine oils
which is certified by the oil company to pass
TO-2 or C-3 Test Specification. Also approved are
SAE API service class CC engine oil and MIL-L-2104B.
Oil viscosity: Note. Multi viscosity
oils (i.e. 10W-40, etc.) are not recommended and
should not be used in Twin Disc Marine Transmissions.
Weights: (Temps refer to sump oil temp and oil in heat exchanger.)
Steady operating condition below 105 deg. F - This
operating condition is NOT approved.
During startup, 32 deg. F Minimum and steady
operating conditions of 150-185 deg. F: SAE viscosity number 30 engine oil
During startup, 32 deg. F Minimum and steady
operating conditions of 175-210 deg. F: SAE viscosity number 40 engine oil
Steady operating condition over 200 deg. F - This
operating condition is NOT approved.
I forgot that I could not use " ALT 0186 " ( 0186 typed in the
numbers keypad with Num Lock on) to make a degree symbol in this
forum. Again, sorry 'bout that.
Take care and be safe.
Wayne
Celestial
Albin 43 Sundeck
Near Panama City, FL
Albin43SDtr Albin43SDtr@comcast.net writes:
During startup, 32 deg. F Minimum and steady
operating conditions of 175-210 deg. F: SAE viscosity number 40 engine oil
Just an FYI for the forum, this is the same oil I need for my 50 year old
Detroit Diesel. I use Shell Rotella 40 (It's Rotella T in the US, but make
sure you don't get the multiweight). http://tinyurl.com/4en5ut
It's not that common in automotive supply locations, but you will find this
oil at any truck supply company and also any commercial Shell lubricant
dealer. It comes in 5 gallon pails, which I find convenient.
Scott Welch
FirstClass Product Manager
www.firstclass.com
"Things turn out best for people who make the best of the way things turn
out." - John Wooden
Mine want 1.6 litres of SAE30 lube oil, but I haven't figured out how
to get the old oil out - the drain plug is too close to the hull to
get anything under it, and I can't get anything down either the
dipstick hole or the fill hole to suck the oil out.
If you go to Twin Disc's website, and look at the FAQ list -
http://www.twindisc.com/MarineProducts/MarineFAQ.aspx
you'll see that a number of the FAQs have a link to their "Operators
Manual" which covers most of their transmissions. The web site
doesn't seem to list the MG502, but it is mentioned in that manual.
Wednesday, September 24, 2008, 4:37:19 AM, David wrote:
DH> My new to me boat has Twin Disk MG 502 transmissions. The manual
DH> says to look at the lube plate for oil requirements. It also says
DH> pre-2002 trannys do not have this plate and mine are pre 2002.
DH> Does anyone know what is the required oil for the MG 502 transmission?
DH> Thanks
DH> Dave Hart
DH> Island Gypsy 44'
DH> Lake Ontario
--
Peter Bennett, VE7CEI Vancouver, B.C., Canada
Ennos 31 "Honeycomb"
GPS and NMEA info: http://vancouver-webpages.com/peter
Vancouver Power Squadron: http://vancouver.powersquadron.ca
Peter Bennett wrote:
Mine want 1.6 litres of SAE30 lube oil, but I haven't figured out how
to get the old oil out - the drain plug is too close to the hull to
get anything under it, and I can't get anything down either the
dipstick hole or the fill hole to suck the oil out.
Peter,
I have had the same problem in the past, I have found that I can use a
piece of 1/4" OD poly tubing, I use a 1/2" MIP x compression adapter in
the inlet of my "pony pump" to connect the poly tube, it works great at
removing oil from a dipstick tube, will slide down the ID of the tube. I
use that rig to change the oil on my 4 stroke Yamaha outboard, really
has reduced the mess and aggravation with that. I always pre-lube the
pump by pouring a small amount of oil into the inlet before connecting
the hoses, make sure the oil I'm removing is warm, and I always run
soapy water (dawn) through the pump and hoses afterwards to remove the
oil; they otherwise quickly get gummy and ruined from the oil working on
the rubber. I get many years life from the impellers with that regimen.
BTW, never ever use a pony or utility pump to pump gasoline. My son
nearly burned down my shop doing that this past March. The shop was OK,
he was OK- very lucky. His Land Rover was destroyed. But that's another
story!!
Regards,
Steve Sipe
Solo 4303 "Maerin"
back in Middle River for a couple weeks