AVL TDL Shaft Lifting
I have a new to me AVL TDL 24 shaft with CD IV. This is a different
type of dobby than I am used to, as the arm picks up all the shafts
that are not activated, so a malfunction raises a shaft. I can weave
between 30-80 picks perfectly, then 3 raises with every pick. AVL is
telling me to increase tension on #3, which I have done; now the
spring on 3 is noticably tighter than any others. I'm having a hard
time understanding how a spring tension can be OK for 80 picks and
then fail completely.
When it fails, the finger is extended beyond the wire. I have to take
the front of the head off for the finger to return. I know that there
are people out there that know more about troubleshooting AVLs than
they do; I think I know a few things they don't. Does anyone have any
thoughts on this? This is a 1991 loom that I bought reconditioned
from AVL. The fabric that it is making is gorgeous, it's so easy and
smooth, until 3 fails, and then begins a tedious process of recovery.