Generator Separation Onan CCK

[vintageibm]

Hi I am trying to separate the Generator from the CCK engine? I can't find anything on the outside that looks like it will make it come apart.

Step by step would be a good help. Thanks a bunch.

http://ibm5150.dyndns.org/welder/ (large 1280X960 Photos)

[vintageibm]

Sorry forgot to add I don't care about the engine it's bad, I wish to save the GEN.

[Elden DuRand]

On the CCK's (I'm NOT an expert), ........ BUT...........

First, you have to remove the end bell and the stator. Sometimes, the end bearing doesn't want to come out of the end housing so a little prying may be in order.

Then, the rotor comes off by loosening the bolt that goes through the shaft toward the engine. Once the bolt is loosened a couple of turns, take a large brass hammer or an iron hammer and a wood block to keep from bashing up the bolt and give it a whack directly on the end toward the engine.

One energetic belt will loosen the rotor. Then you can remove the bolt and take the rotor off of the shaft.

Anyhoo - that-s the way I'd do it.

Take care - Elden
http://www.oldengine.org/members/durand

[vintageibm]

Originally Posted by Elden DuRand

On the CCK's (I'm NOT an expert), ........ BUT...........

First, you have to remove the end bell and the stator. Sometimes, the end bearing doesn't want to come out of the end housing so a little prying may be in order.

Then, the rotor comes off by loosening the bolt that goes through the shaft toward the engine. Once the bolt is loosened a couple of turns, take a large brass hammer or an iron hammer and a wood block to keep from bashing up the bolt and give it a whack directly on the end toward the engine.

One energetic belt will loosen the rotor. Then you can remove the bolt and take the rotor off of the shaft.

Anyhoo - that-s the way I'd do it.

Take care - Elden
http://www.oldengine.org/members/durand

so the ideal is go thought the gen. end? It sounds like the gen. can't be used without the engine? Dose the engine crank shaft the same a the gen shaft? Can the Gen be used and run without the engine there?

[Kimbra Dean]

The end of the crankshaft is tapered. The generator shaft has a tapered bore to fit the crankshaft. The generator must be mated to a compatible CCK engine. As with most direct coupled generators there is no front bearing. If you want to couple it to another type engine or convert it to belt drive you will have to have adapters machined.

[vintageibm]

that's what I was worried about, are these parts ready off the shelf? Is that the only way to take apart the motor and gen, I really don't want to tare apart the gen.

[Mikey4026]

Starting at the back and working forward piece by piece is the only way.
A pound of C4 might get it off without disassembly, but you might break something in the process.
Mikey

[K D Redd]

Yes, the engines main bearing support the alignment of the rotor, Along with the bearing in the end bell, in the stator. I recently modified a Win-Power 2k generator head so I could direct-couple it to a 5 HP B&S engine. The original Robin engine was toast. I took the crank from the Robin engine and modified it to a stub shaft. I had many problem that I still do not understand where the problem was at but I got her done. If you would like to see picture look in the general Generator section for the topic Got another project.

Kent

[vintageibm]

Please forgive me, I don't know anything about the these, But If I remove the bolts on the outside of the gen. (marked 1) and then remove the shaft bolt (marked 3) that whole unit will come out and just leave the shaft in there? What about all those wires? will they slide out with that unit. What about the bolts marked 2?

http://ibm5150.dyndns.org/welder/P1010012.jpg

[Elden DuRand]

Again, I'm not sure but I think the bolts marked "1" hold the field coils in place and should -NOT- be removed.

Bolts #2 look like they hold the end bell on. First, remove the brushes so they won't be damaged, or at least pull them out of their guides so they are out of the way.

You'll probably have to support the engine before loosening these bolts. Now, loosen them a few turns and see if the housing wants to seperate from the engine. If so, gently remove it, being careful to not damage the armature, which is still firmly attached to the crankshaft.

After the housing is off, remove bolt #3, take off any washers that are on the bolt and then put the bolt (or nut) back on and turn it in until it is about three turns from starting to tighten.

Now, using a brass hammer or a heavy hammer and a block of wood against the bolt (nut) give it a healthy belt square against the end of the bolt (nut) and toward the engine. The tapered end of the armature that fits the end of the crankshaft should come loose from the crankshaft.

Remove the bolt and remove the armature.

Note that this generator end only has the one bearing. The bearing on the engine end is the engine main bearing.

Take care - Elden
http://www.oldengine.org/members/durand/