tilt motor 1974 85 hp Johnson

[boatinut]

Motor brushes have slipped out of slots. How do I get them back in and at the same time slip the<br />arma ture back on?

 

[mrbarth]

Re: tilt motor 1974 85 hp Johnson

Hi boatinut,<br /><br />you got an answer ?<br />U have the same problem on a 90 HP 1991 trim motor ?

 

[lark2004]

Re: tilt motor 1974 85 hp Johnson

An old trick with fitting brushes is to use the pig tail to hold the brush as far in as possible. Once the armature is fitted, the tails can be released and terminated as normal.<br /><br />I'm not sure how your motor is built so I can't give specific details, but this works with most brushed electric motors.<br /><br />Btw, how come they slipped out of the slot? did you pull it apart, or are the brushes so far gone that they fell out while in use, which would mean you need new brushes and should also clean up the comutator on the armature.

 

[lawyertob]

Re: tilt motor 1974 85 hp Johnson

Originally posted by boatinut:<br /> Motor brushes have slipped out of slots. How do I get them back in and at the same time slip the<br />arma ture back on?

Boatinut,<br /><br /> I am pretty sure yours is the same as my 1975 115 trim motor. If so, and even if not it works for most motors, then there are a couple of easy ways to do it. Now, the manual tells you to put the whole motor together and then attach it to the pump. It was easier for me to have the pump and reservoir assembled and lightly held in a vice by the starboard support bracket. Put the armature into the pump (this is a good time to make sure that the slot on the end of the armature has engaged the pump, and then slide the motor shell etc. over the armature.<br /><br />The easiest way is to:<br />

• <br />
• Get either some string or some fairly long bread ties.<br />
• Hopefully, you marked the end cap and the motor shell before disassembly. If not try to make marks so that when you get it together the frame screws will go in.<br />
• Take the whole brush holder and end cap assembly off.<br />
• Push the brushes into the brush holders then use either the string or the bread ties to tie them in fully compressed. Leave knots or twists to the outside.<br />
• Place the end cap and brush holder assembly back on. Don't forget the frame screws, spacers, and the little washer seals. There should be plenty of room to clear the armature commutator.<br />
• If possible go ahead and see if everything will go all the way together. This makes sure that the bottom of the armature has engaged the pump. Otherwise, you won't be able to get it to go down far enough and you will have to start over. Been there, done that. You can also rotate the armature slowly and it will drop into the slot.<br />
• Pull the end cap and brush assembly up just far enough so that you can either cut the string or untwist the wire, but make sure that the brushes, when released, will ride on the commutator.<br />
• Remove the ties or strings and then, after making sure that the brushes are still riding on the commutator, push the whole mess together.<br />
• Tighten the screws, look around and make sure you don't have any extra pieces...you did put the shell o-rings on, right?<br />

<br /> <br />Even if you insist on following the manual procedure, tieing the brushes back until you get them over the commutator will work.<br /><br />Hope this helps,<br />Joe

 

[lawyertob]

Re: tilt motor 1974 85 hp Johnson

Sorry, double post.

 

[lawyertob]

Re: tilt motor 1974 85 hp Johnson

Originally posted by lark2004:<br /> An old trick with fitting brushes is to use the pig tail to hold the brush as far in as possible. Once the armature is fitted, the tails can be released and terminated as normal.<br /><br />I'm not sure how your motor is built so I can't give specific details, but this works with most brushed electric motors.<br /><br />

Lark,<br />The parts drawing shows his to be the same as mine, and it is really tight. The space between the shell and the end cap was just a little thicker than a pencil. Of course, if you do the manual method and hold the end cap upside down, engage commutator then slide on the rest of the spacers, Field winding, and shell, then you have all the room in the world. However, you need eleventeen hands to hold everything steady...and then the armature drops out when you try to put it into the pump. Chances are he did not disassemble the pump, because they are hard to get parts for, so he won't be wanting to turn the pump upside down...makes a real mess, been there, done that too. <br /><br />Just my $0.02 worth,<br />Joe

 

[lark2004]

Re: tilt motor 1974 85 hp Johnson

thats cool , as I stated, I wasn't sure how his motor was built. What I gave is a general process when assembling an electric motor. Never said it was the only way. After all, we're all here to learn.

 

[mrbarth]

Re: tilt motor 1974 85 hp Johnson

Thanks guys.<br /><br />lark, I had to disassemble it, because the cable was broken so near to the housing and additionally, it did not work even after I tried to get a better electrical connection.<br /><br />Heres the picture. See the broken cable.<br />

<br /><br />So I got the motor out, broke it in parts.I drilled both cables out to get new holes into the lower housing and then I found that the right brush was stuck (and is quite rough to the contact point)<br /><br />

<br /><br />I cleaned it, got rid of some debris and its now moving smoothly. (although I wonder if I have to sand the rough round surface ??)<br /><br />In addition, I would like to clean this little switch inside, as those contacts dont look to good either.<br />

<br /><br />But maybe it would be better to replace it.<br /><br />Does anybody has a partnumber and resource for this guy ?<br />

<br /><br />It's not in the Seloc manual. The OMC manual states it's a Fas Trak something.<br /><br />Thanks for the tips on getting the brushes in to all others.

 

[mrbarth]

Re: tilt motor 1974 85 hp Johnson

Hi Guys,<br /><br />I finally made it and for those doing a search here is what I found. <br /><br />After doing all the cleaning, routing new cables in thru the newly bored holes and connecting the cables, I tried to put the top cover with the commutator in while holding the brushes back with 2 paper clips.<br />Did not work as the gap closes before the comm is between the brushes. After several desperate tries, while pulling the parts out again, I suddenly had the commutator out of the top cover in my hands.<br />It looks as if it is just stuck in some kind of axis holder in the top of the metal cover. <br /><br />From there it was a breeze, as I could hold the brushes back with my hands, fitting the comm. in and popping the top cover over it.<br /><br />And the motor runs !!<br /><br />Strange enough, at first I believed I damaged it as the comm. came out but it looks OK.<br /><br />Thanks for all your help.<br /><br />(If you see some smoke over west FL it's probably me getting this motor in tomorrow )