Getting the roll pins out is a real problem for replacing the planet
shafts with a special hardened and ground bolt/planet-shaft.

I think a hypodermic needle and high pressure oil might work.
Put the needle all they way down in the bottom and apply a shot
of high pressure oil to the needle. In theory it should pop out some
what.

I also thought about tapping  it with a 2-56 tap.

Then there is supper glue and welding wire but you have to get all
the oil out first.

Here is another idea. Stick welding wire in and apply a lot of current.
The welding wire might then weld itself to the roll pin. Then pull it
out. This trick might work the best and is easy to try on the junk
planet carrier I have. Are you up for this test Ed?

Paul Lamar

Using the welding trick has real potential.
Insert the welding rod only into the roll pin about 1/16th of an inch.
This should reduce the possibility of the roll pin welding it self to the

planet carrier instead of the roll pin.

Something as simple as a 12 volt car battery should put

out enough current to weld the wire to the roll pin.

Paul Lamar

As a dentist, the first thing I thought about was if I could use my dental
drill somehow... If the roll pin is not much more than 3/8" deep, I could
just create a small slot opposite the existing seam, running the entire
length of the pin, then try to grab either of the two resultant halves with
needle nose or even try the screw trick again.  Might be able to create the
slot with a dremel etc

Gene Kahn


The high pressure oil reminded me of how to get out a clutch pilot bearing
if you don't have a puller.  Fill the cavity with grease and use a pin or trans
input shaft.  Hit with a hammer and replete as necessary.  Hydraulic
pressure forces the bearing out. The drill end of a drill bit may fit closely
enough.

Dan F