TD 20 -NEED parts

[dheitman62]

Sorry!! Didn’t mean to repeat the first picture.

[aquasonic]

I decided to have a look at my TD-20 manuals. One manual appears to be an early version and the other a later version. Under the ‘Lubrication and Care of the Gearcase’ section of the earlier manual it states:

"Fill with MOBILGREASE UW or SEA-HORSE GEAR LUBRICANT No. 2…" and "gear lubricant can be mixed with motor oil S.A.E. 30 or 40 to make it more fluid; this, however, necessarily will have to be left to the discretion of the operator."

The later version of the manual had a little bit different recommendation:

"Mobilube GX 90 is recommended for best operation. In the event this is not obtainable, use any good grade of S.A.E. 90 gear oil suitable for automotive hypoid gears. In case of an emergency where neither is available, it is permissible to use an S.A.E. 40 oil, but only until such time as the proper lubricant can be obtained. Note: Sea Horse Gear Lubricant #2 or Mobilgrease "UW" were previously recommended. Either the grease or the hypoid gear lubricant may be used with satisfaction."

So out of all of that, somewhere late in the production run, it looks as though Johnson decided that the brass and rubber "CR or Garlock" seals were good enough for 90W hypoid oil. Grease or 90W? I guess it comes down to personal satisfaction/availability. Both are correct.

I was also curious about the "GREASE" stamping at the filler plug that was discussed, so I checked out my TD-20’s downstairs. To my surprise, two of the TD’s had the filler plug on the Port side with no writing, and two of the TD’s had the filler plug on the Starboard side with the word "GREASE". All of the motors are 1947 models, and believed to be original gear cases.

[aquasonic]

Looks like you found it! 😀

[49hiawatha]

Good detective work. It took me almost two years to figure out my 48-50 Gale carb knob issues and when they switched etc. Satisfaction!

[aquasonic]

The broken insulator plate is a problem, but only half of the story. The tiny black screw insulators keep the brass screws from shorting to the cast aluminum post. Hopefully you have them, but if any are missing, they are easily made.

[steveh]

Dheitman62,

Welcome to the forum. As you are already finding out, there are a lot of guys here who are willing to help you get your motor running. I hope you’ll find the help and information valuable. I know in my case the help I received eventually led me into this hobby and I eventually joined the AOMCI. I hope that will be the case with you.

I have a lot of correspondence from a gentleman named Lloyd who is the guru on these motors. According to him, rarely are these coils, condensers and points bad. They should still be tested, but the odds are in your favor that they are still good. It was a good find on the bakelite insulator. I would still polish the points shiny and see if you have spark. That chip may or may not be an issue, but it won’t affect both sides of the motor. Be careful with the small o-ring insulators as stated above. Mine were deteriorated, but I took the thing to the hardware store and found a strip of wire that would just fit, and bought an inch of it. Then I cut the insulation cover to the correct size and used that as a replacement for the O-rings.

The carburetor will need a rebuild. You can find a lot of information here: http://www.pochefamily.org/outboard/

As far as the grease/oil question goes, my TD-20 also has the word ‘grease’ written on it. It’s a 1948, so I’m not sure why some of the motors have it stamped and others didn’t. I knew that I had the same question and reviewed my correspondence with Lloyd. His recommendation was to use 90wt hypoid oil and he specifically recommended against using grease in my motor. I have not run my TD-20 much, but I have used oil without issue.

Well again, welcome to the forum and good luck with your TD-20.

[mercuryman]

http://www.ebay.com/itm/580016-NEW-OEM- … 6016.l4276

Will the above points fit your TD 20

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