Removal of gearbox 1956 CD-13 5.5hp Need a little help

[MarvK]

OK, so I started to remove the gearbox on my CD-13 5.5 today and have run into a problem.

1st, can I pull the shifter rod all the down through the lower unit while it' still attached to the shift fork, part #47?

2nd, can I separate the bearing assembly from the lower casting half? It's part #53 on page 16. Vintage Evinrude Johnson Outboard Parts & Diagrams - Catalog 376744

It looks like part #50, cradle, has one of the ears broken off. Probably why I'm having problems with the shifter.

Thanks in advance,
Marv

 

[HighTrim]

Re: Removal of gearbox 1956 CD-13 5.5hp Need a little help

Common issue.

Once the skeg is removed, the whole prop shaft assembly will lift out, including the bearing assembly.

You have the gearcase off of the motor right, after you removed the powerhead to disconnect the shift rod? Im not sure what you mean by your first question.

 

[MarvK]

Re: Removal of gearbox 1956 CD-13 5.5hp Need a little help

Yes Sir. Powerhead is off and the shift rod has the 2, 3/8" nuts on top removed. It's still attached at the bottom with the cotter pin. Gearcase has the 6 bolts removed.

Tapping on the bearing assy to remove it would be OK? I don't want to damage anything.

 

[nwcove]

Re: Removal of gearbox 1956 CD-13 5.5hp Need a little help

a gentle tap with a block of wood is ok....but be gentle as it may pop out and end up on the floor. you may also want to pay close attention to the orientation of the bearings....maybe scribe a faint line for reassembly purposes.

 

[MarvK]

Re: Removal of gearbox 1956 CD-13 5.5hp Need a little help

OK, got the prop assbly out, inspected it, and found the problem. Part #50 is trashed. One end is completely gone. I found it in the bottom of the casting, or what's left of it, along with a lot of shavings. #47 the yoke, has both ears pretty worn. And #51 looks OK, maybe worn on the drive dogs a bit.

The gears themselves look pretty good. Fwd, Rev, and the drive gear.

Now, I'll see if I can find the replacement parts............

Thanks NW, and Chris.

Marv

 

[HighTrim]

Re: Removal of gearbox 1956 CD-13 5.5hp Need a little help

Let me know if I can help with the parts. Salvage yards, the webvertize at aomci.org and ebay are other good spots.

 

[MarvK]

Re: Removal of gearbox 1956 CD-13 5.5hp Need a little help

Thanks Chris,

I found 2 major pieces at eBay.

Marv

 

[MarvK]

Re: Removal of gearbox 1956 CD-13 5.5hp Need a little help

***Update***

Finally got all my parts together and spent the last couple of nights replacing them and getting her back into shape. Put her in the barrel tonight and she fired up on the 3rd pull. Shifts into fwd/neu/rev like new now. :joyous:

Learned a lot of how the gearbox and shifter works. It wasn't bad at all except when I needed a third hand holding things together and getting the 2 halves together. A vise would've helped a lot. The cradle had an ear busted off, and the the fork lever was in pretty bad shape. Can't wait to test it out on the big water this weekend. I also replaced the seal just below the impeller, hoping that was the culprit with the water intrusion into the gearbox itself.

To anyone who is hesitant to attempt getting into the gearbox if need be, I say go for it. The folks here will help you along and answer any questions that you might have. Heck, maybe someday I'll be able to help along a newbie.

Thanks NW, and Chris.

Marv

 

[Daviet]

Re: Removal of gearbox 1956 CD-13 5.5hp Need a little help

Glad you got your repairs done, good luck on the big water checkout

 

[64osby]

Re: Removal of gearbox 1956 CD-13 5.5hp Need a little help

The guys here are great. They have helped me numerous times.

The first time tearing any motor apart, or a lower unit, can be a little daunting.

The next one will easier.

Quick throw it on a transom, put it in the water before the water gets hard.

Hope the test goes well.

 

[ddwilson]

Re: Removal of gearbox 1956 CD-13 5.5hp Need a little help

hope it works out just about to tear into my 59 cd16
if you still end up with a leak check the seal on the shift rod there is an o ring under the bushing

 

[dkonrai]

Re: Removal of gearbox 1956 CD-13 5.5hp Need a little help

question, you did install all new seals, drive shaft, prop shaft?
d

 

[MarvK]

Re: Removal of gearbox 1956 CD-13 5.5hp Need a little help

question, you did install all new seals, drive shaft, prop shaft?
d

Prop shaft, no. The one on the drive shaft below the impeller and the 2 on top of the driveshaft. One was an O-ring, and the other was cork. New O-ring and spaghetti seal between the housing along with permetex black silicone. There was no evidence of any leakage externally, so I left the prop shaft seal alone.

Marv

 

[MarvK]

Re: Removal of gearbox 1956 CD-13 5.5hp Need a little help

hope it works out just about to tear into my 59 cd16
if you still end up with a leak check the seal on the shift rod there is an o ring under the bushing

My '56 doesn't have a seal on the shift rod. Only on the driveshaft.

Marv

 

[HighTrim]

Re: Removal of gearbox 1956 CD-13 5.5hp Need a little help

My '56 doesn't have a seal on the shift rod. Only on the driveshaft.

Marv

Actually the shift rod does have a seal, well o ring technically. It is held in place by a bushing that you need to drive out to replace the seal. This is done by a special tool or backyard ingenuity! F_R on this forum makes the tool, I have one and it is great.

Part numbers 21 and 22 on page 16 here

Vintage Evinrude Johnson Outboard Parts & Diagrams - Catalog 376744

 

[MarvK]

Re: Removal of gearbox 1956 CD-13 5.5hp Need a little help

Hmmmm........

I stand corrected. I can see how it's easy to miss. If I still have water in the gear oil, that will be the next place I look. If it is that hard to remove that I need a special tool, I'm glad I didn't try to replace it. I was a little nervous trying to get the other seal out. All I had was a screwdriver, not the optimal tool by any means, but it got the job done.

Still learning.............

Marv

 

[HighTrim]

Re: Removal of gearbox 1956 CD-13 5.5hp Need a little help

Don't want to scare you off doing it, not hard but does require some special tools. Either home made or bought. Some guys have used spade drill bits to drive out the bushing. Lots of options, I just prefer the tool. Here is one of my home made jobs. The last pic shows the bushing, o ring and the 3m 847 needed to reseal a gearcase.

 

[MarvK]

Re: Removal of gearbox 1956 CD-13 5.5hp Need a little help

Is that just a rod with a taper on one end? I could make one of those at work. What is the diameter, and taper angle if I may ask?

 

[HighTrim]

Re: Removal of gearbox 1956 CD-13 5.5hp Need a little help

I think that one is a 5/16 rod ground down to 1/4

 

[MarvK]

Re: Removal of gearbox 1956 CD-13 5.5hp Need a little help

***Update***

I just thought I'd mention that she runs great! Shifts like new now. I put about 5 hrs on it the past couple of weekends, and no problems.

I still haven't checked for water intrusion yet, but there are no external leaks.

Thanks again for the help. Now I'm onto my last project this season, a Hiawatha, (Scott Atwater), 3.6hp.

Marv