madamsiowa
madamsiowa
6 posts
Joined November 2012

Indexing arm not resetting properly

What I originally thought I was having trouble with was the primer disc not being loaded properly with primers. It started with an absent primer about every 10 rounds then it grew to every 5 rounds and then every other round. Turns out the disc wasn't rotating. I changed the index arm spring and fixed the problem for the most part, but now I'm noticing the arm is not "resetting" correctly. Once it advances the disc and springs back the arm is not falling into the next hole in the disc. I have to manual give it a push to get it back in the correct position. My only guess is a worn out bowed washer. I also read a post that indicated the drawing in the manual has the washer incorrectly positioned, ie. bow down rather than the bow up?
divejj
divejj
131 posts
Joined December 2012

RE: Indexing arm not resetting properly

This happens to me when I let the press get a little too dirty. Take apart the primer assembly from the machine and give it a good cleaning, including under the shell plate. This does the trick for me and I'm good to go for another few thousand rounds.
dillon
Administrator
dillon
3,021 posts
Joined July 2007

RE: Indexing arm not resetting properly

Be sure to grease the index pin that the primer index arm and disc pivot around. That is the most common cause, followed by a dirty primer seater assembly. If the primer seater is too dirty, the punch does not retract fully, inhibiting indexing.
madamsiowa
madamsiowa
6 posts
Joined November 2012

RE: Indexing arm not resetting properly

I will try the grease. The arm indexes just fine and rotates the primer disc so I don't think it is the primer seater . It just won't reset into the next hole in preparation for the next stroke. I can manually push it back to reset, but otherwise it doesn't reset. I just received parts and changed the bowed washer, the indexing arm and the spring and it is still doing it.
madamsiowa
madamsiowa
6 posts
Joined November 2012

RE: Indexing arm not resetting properly

Well, mystery solved! I needed a new index arm spring, 13962, for my 650 and I was sent a tab/spring arm spring, 13936, for the 1050. It would have been ok if they sent all the other parts to complete a 1050:) I have a 13962 on the way and should be back in business soon!