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D2 pony motor balancer

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6 years 5 months ago #188990 by Hal
Replied by Hal on topic D2 pony motor balancer

I made such a puller.... Two long bolts ( about 12" or so) that thread into the balancer. At the "head" end of the bolt a pieces of 1" thick steel about 8" x 2". 2 holes in that plate match the distance between the holes in the balancer. Place a hydraulic Jack ( that will work on its side - some won't ) between the plate and the pony shaft.

On a D6 I did this and had to use a cheater bar on the hydraulic Jack. I covered the entire assembly with a heavy tarp, expecting shrapnel to fly or the Jack to blow. There was a loud bang, but the balancer popped off.

I posted pictures in an old post about this....


Tognot, thanks for mentioning that post. I took a look at it, I have tried most of what was mentioned. I put the puller under as much pressure as my impact would give it and left it for 24 hours and nothing happened. I put heat to it while under pressure (although not too much ) I think I will try pressure and more heat again this weekend. Now that I understand that heat won’t hurt the flywheel. I will have to look but I don’t remember seeing holes in the flywheel but then again I wasn't looking for them and they are probably there and using them and a jack will be the next option.

Thanks again

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6 years 5 months ago #188994 by dpendzic
Replied by dpendzic on topic D2 pony motor balancer
sometime long ago I read that while you have the flywheel under strain to take a hammer and hit it perpendicular to the crankshaft to get it to pop off

D2, D3, D4, D6, 941B, Cat 15
Hancock Ma and Moriches NY

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6 years 5 months ago #188995 by neil
Replied by neil on topic D2 pony motor balancer
I crank my 10t hyd puller up, and then while holding my 20# against one side of the flywheel, tap the other side with my 10#. Specifically that is tapping on the circumference, not the front face

Cheers,
Neil

Pittsford, NY

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6 years 5 months ago #188996 by Hal
Replied by Hal on topic D2 pony motor balancer

I crank my 10t hyd puller up, and then while holding my 20# against one side of the flywheel, tap the other side with my 10#. Specifically that is tapping on the circumference, not the front face




I e tried tapping on it but not with two hammers. I’ll give that a try thanks

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6 years 4 months ago #190078 by Hal
Replied by Hal on topic D2 pony motor balancer
...............
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6 years 4 months ago #190088 by ccjersey
Replied by ccjersey on topic D2 pony motor balancer
Looks like you have a good grip on it. Did it pop off yet?

D2-5J's, D6-9U's, D318 and D333 power units, 12E-99E grader, 922B & 944A wheel loaders, D330C generator set, DW20 water tanker and a bunch of Jersey cows to take care of in my spare time:D

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6 years 4 months ago #190089 by Hal
Replied by Hal on topic D2 pony motor balancer

Looks like you have a good grip on it. Did it pop off yet?


When I post that picture I had been messing with it off and on for hours yesterday and was getting pretty frustrated with it. I had put all my 220 pounds on that 10 ton puller and still nothing. As I was walking away for the night it popped loose so after a couple of months of messing with it I can finally move on with rebuilding it ! Thanks to everyone for your suggestions I’m sure I’ll have more questions along the way

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6 years 4 months ago #190102 by TOGNOT
Replied by TOGNOT on topic D2 pony motor balancer
Hal, that's called " Victory!!"

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6 years 4 months ago #190104 by Rome K/G
Replied by Rome K/G on topic D2 pony motor balancer
"Bravo!!!!!"
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