'79 johnson 115 rectefier

[david_r]

ok heres the deal...i went fishing this morning and got run home by rain(ike) and i wasnt showing the normal charge on the fishfinder.

i did some moving around of the batterys and apparently must have touched the wrong terminals at some point.

i did joe reeves rectifier test and i guess my new one is bad but just for ***** and giggles i tested my old one with the goo melting from the inside and the whole plug thing on the inside turned a little sideways.........it passed!

now i wasnt aware of this great info site (or any other) when i was overcharging like a big dog and i just assumed(yes i know what that spells when u break it down) that since i was charging at 17v at wot and there was goo coming from my rec that it was faulty.

why does the one with goo pass and the fairly new one not?

i probably already know the answer to this one but should i buy another or use the goo dripper?

thanks for the help.

 

[david_r]

Re: '79 johnson 115 rectefier

well thought the goo dripper passed...everything checked out by joe reeves test method except the red wire #s were higher than the yellow wires.

does thid mean it will fry soon? or is it ok?

 

[ezeke]

Re: '79 johnson 115 rectefier

Don't risk it. If the wires in the rectifier fuse and allow battery voltage to get to the ignition, the next thing you will need is a new stator.

 

[david_r]

Re: '79 johnson 115 rectefier

well i did another check and the plain yellow wire came out of the rectifier on the newer one, and the old one definately has higher readings on the red than the yellow wires.

so i guess im beached till next paycheck!

what are the chances of stator damage already?

will it just poop out or is there a test to check for weakness?

 

[david_r]

Re: '79 johnson 115 rectefier

ok now i read on another thread (but i cant find it) about wiring in a regulator/rectifier from a newer model.

will i also need my original set up or does this replace my old set up?

does anyone have the # for this newer part?

 

[david_r]

Re: '79 johnson 115 rectefier

could this have been from my car battery? its only about a month old

or was i correct in thinking im a goober cause i might have touched the wires to the wrong poles? accidentally of course.

i remember grabbing the wrong wires once but i cant remember if it was the starter or the trim motor wires.

 

[ezeke]

Re: '79 johnson 115 rectefier

You don't need a rectifier to run the motor. Take it off until you get the new one.

CDI Electronics has a regulator for the existing rectifier if you want to wire one in. Just be sure it is the correct amperage. There is also a regulator sold here: http://www.mfgsupply.com/m/c/01-090-1.html. Same warning applies.

You can also install an up-to-date water cooled regulated rectifier if you want. Just be sure that it matches your amperage. You have to remove the lifting eye.

 

[david_r]

Re: '79 johnson 115 rectefier

so it wont hurt to run without the charging system other than not charging the battery?

so just keep my eye on the voltage from my fishfinder so i can restart!?

have any suggestions about my stator questions?

 

[ezeke]

Re: '79 johnson 115 rectefier

The rectifier is necessary for most tachometers, otherwise no, you can run without it, but map the wires and get it out of there. Charge the battery before each trip. The fishfinder should not discharge the battery; the tilt and trim is the biggest draw outside of the starter.

The stator usually has melted potting if it has been hit by battery voltage. Take a careful look up under the flywheel and see.

 

[david_r]

Re: '79 johnson 115 rectefier

You don't need a rectifier to run the motor. Take it off until you get the new one.

CDI Electronics has a regulator for the existing rectifier if you want to wire one in. Just be sure it is the correct amperage. There is also a regulator sold here: http://www.mfgsupply.com/m/c/01-090-1.html. Same warning applies.

You can also install an up-to-date water cooled regulated rectifier if you want. Just be sure that it matches your amperage. You have to remove the lifting eye.

ok the one on the site you listed goes along with my rectifier correct?

ive looked and it appears that i have a 10amp stator any suggestions about the up-to-date #?

i could be wrong i was just guessing buying one part would be cheaper than 2.

i checked all around under the flywheel and no goo.

thanks for all your help!

 

[david_r]

Re: '79 johnson 115 rectefier

i was just puttin along when i noticed my voltage and didnt pay any attention to my tach, and then my eyes were glued to the fishsinder voltage.

according to the joe reeves test the tach is probably fried correct?

 

[ezeke]

Re: '79 johnson 115 rectefier

I put a CDI 193-4204 water cooled regulated rectifier on a 1979 115 last year and it performed perfectly. You have to do a little wiring just as you would on adding the regulator but it is very simple to do. Mine came with the gasket.
http://www.iboats.com/mall/partfind...d_poid=334784&gd_row=200&**********=980501334


I have used a regulator from CDI in the past and that worked fine as well.


"There is also a regulator sold here: http://www.mfgsupply.com/m/c/01-090-1.html." I have no -zero - none experience with the company or the part that the link is dealing with. That is the one from a thread that you mentioned earlier.

 

[david_r]

Re: '79 johnson 115 rectefier

that is the one i was eyeballing when i went to the parts search for i boats before you responded.

i took a few wild guesses while searching so im glad to know thats the one you have used and reccomend.





im thinking i might need a link or some other type of help wiring this. the wire colors dont look the same(maybe its my eyes or imagination)

gasket????

 

[ezeke]

Re: '79 johnson 115 rectefier

The CDI regulated rectifier 193-4204 has 5 wires: two yellow; one red; one gray; one purple.

The first three go to the terminal block the same as the unregulated rectifier.

The gray wire connects to the gray wire in the engine harness to drive the tach, so you have to disconnect the crossover to the gray and yellow wire on the terminal block and let the tach run through the regulated rectifier.

You could also tape the gray wire off on the regulated rectifier and just leave the tachometer wire the way it is. It would be more important if you had a VRO/OMS or system check warning system.

The purple wire connects to a purple wire on the terminal block which runs to the engine harness. Currently it will probably have nothing connected to it.

 

[david_r]

Re: '79 johnson 115 rectefier

thanks a million i really appreciate it.

this will go to my favs....since it may come in handy to somebody else also.....i wish i knew about this before i bought the last one for $50.

i now have my battery terms marked clearly; they are old and dirty and unless the sun is shining and you look really really close they all look black

by the way whats with the gasket?

thank you thank you thank you!

 

[ezeke]

Re: '79 johnson 115 rectefier

Under the lifting eye is a column of cooling wate when the engine is running. It cools the regulated rectifier. The gasket goes under the rectifier to contain the water.

 

[david_r]

Re: '79 johnson 115 rectefier

ok i gotcha i was not even thinking about the cooling part.

so just take off the lifting eye and the water passage cover and the regulator will fit right where the cover was.

seems easy enough....from the looks of this pic i will order a gasket too, for just in case.

i really appreciate it , thanks for all your help and time ezeke!