| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 1013.1 | Avoid a hammer if possible | CSLALL::JEGREEN | Team Advil Barefoot Company | Fri Jul 31 1992 09:33 | 12 |
| What did you use to 'push' the other three wrist pins out with ?
Follow the shop manual and push on the non-L side. I suspect that
because the tough one is the one which blew you may have a slightly
bent wrist pin.
For all the engines I've built, I've used a 2 ton press to insert and
remove wrist pins. 2 tons is more than enough for a 'good' wrist pin.
If you don't have access to a press try a local machine shop. They
would also be able to tell you if the connecting rod was bent at all.
~jeff
|
| 1013.2 | thanks | CREATV::64691::THEMAC::Matt | Still trying to think of something clever! | Fri Jul 31 1992 11:20 | 9 |
|
Thanks that's just what I did and you were right the wrist pin
was bent just a hair.
I love your personal message, I too dabble and fall barefooting.
Skiing as hard as I can,
Matt B.
|
| 1013.3 | Cheap improv with threaded rod | HYDRA::BURGESS | Water dependent | Fri Jul 31 1992 20:16 | 9 |
|
FWIW, I never seem to be within arm's reach of a hydraulic press
when taking wrist pins (gudgeon pins ?) out... I've had good luck
with improv'd pullers made up of threaded rod, nuts, washers and short
lengths of gas pipe.... think about it, you can pull the pins in
and/or out with them.
Reg
|
| 1013.4 | homemade type works fine | CSLALL::JEGREEN | Team Advil Barefoot Company | Mon Aug 03 1992 13:03 | 6 |
| My press is nothing more than a hydraulic bottle jack, 2 pcs of
threaded rod for the vertical uprights, and 3 pcs of 4" channel iron.
Quite simple, and quite effective. If you're gonna play with pistons
it's worth having.
~jeff
|
| 1013.5 | Try a Vise!! | TUNER::RONEY | | Mon Aug 03 1992 17:49 | 10 |
| I've done similar things with a 5 ton vise that I have on my workbench
using various size sockets. One larger than the diameter of the wrist
pin on one side and a smaller one on the other side to drive it out
when you close the vise.
It works every time, real easy and slick too!!!
Have fun......
Bob
|
| 1013.6 | Boy does this bring back memories... | FSOA::SLIEKER | | Tue Aug 04 1992 17:23 | 9 |
| Don't forget to heat the aluminium piston first. It expands much faster
than the steel pin. If you thoroughly heat it with a propane torch you
can often get them out with a wooden drift. Another good way is with
a "C" clamp a block of wood and a socket. Select a socket that rests
only on the pin and not the piston shoulder. Drill a hole in the wood
the size of the hole in the piston. Put the block on one side and the
socket on the other side. Use the "C" clamp to push the pin (with the
socket) out into the hole in the wood. Worked for me many many times.
|