had to remove the tracks on the D4 because we had several track links lock
up on us. Actually 7 of them.
took the tracks to a track shop to have them pressed apart, but their 200
ton press couldn't move the stuck pins. They even broke the press
pin they were using. We ended up cutting the
tracks apart with the oxy-acetylene torch and replace the pins and bushings
in the stuck links.
lot of cutting, heating, pounding with a big hammer and sweat has the
tracks fixed. We
have one of the tracks back on the undercarriage.
Dad is driving in the master pin on the other side. My brother is
tightening the track.