Lee Precision Pro1000 3 Problems Solved!

I have had quite a few of these presses in here for repairs over the years and 80% of the time this is the cause…

Can you see the problems?

Problem no 1…the Zero Adjustment Screw (TR2139) is installed incorrectly.

The Zero Adjust Screw should be on the inside of the carrier. You will notice a recess in the carrier for the Screw head.

With the screw on the outside it will lose contact with the Ratchet Gear (TR2432) and result in your Pro1000 not keeping the timing. If your press does not time correctly you will have priming issues. Remember the Pro1000 primes at the bottom of the stroke, if the shell plate is not aligned you can crush or tip primers.

Make sure that the Zero Adjust Screw is installed correctly.

Problem no 2…the Case Sensor Clip (TR2549) is also installed incorrectly.

The straight leg of the Case Sensor Clip should fit into the slot and the curved section fits around the primer pin area. The top part engages the Case Sensor Clip.

If this is installed incorrectly your primer pin will not reset causing either primers not to feed on the pin or primers feeding when a case is not present, this will cause that primer to get stuck under the shell plate and seize your press.

Onto the next problem…

Problem no 3…the Case Sensor (TR2548) is not installed correctly. Notice that the Sensor Bushing (TR2550) is installed with the Tension Finger (TR2443) around it? This will cause the Case Sensor to bind and not activate the Case Sensor Clip…leading to the same problem as above, no primer feeding or continually feeding.

This is how it should be installed:

1. Install the Tension Finger on the carrier, round part around the protruding pin, straight part in the gap and must be against the shell plate.

2 and 3. Install the Sensor Bush in the Case Sensor from the bottom. The head of the Sensor Bush sits on the bottom.

4. Fit the Sensor Screw (FT1940) through the Case Sensor, Sensor Bushing and Tension Finger and into the carrier. Tighten but note that the Case Sensor should be moving freely.

See Problem no 2 and ensure that the Case Sensor Clip engages the Case Sensor.

Also make sure that your Priming Pin is installed with the short end down and the Primer Spring is installed on the long end to the top.

Also note…

Case Sensors do wear out and needs replacing…you will note that the plastic loses its strength and does not fully engage the Case Sensor Clip.

Tension Fingers also wear out and need to be replaced as soon as they do not securely hold the case in the Shell Plate.

Ratchet Gears do wear out, the Zero Adjust Screw will wear them out over time. Inspect the gear when you service your press.

Hex Ratchets (90108) also wear out, they start slipping on the Index Rod. When fitting them it should be a tight fit on the Index Rod.

One more tip…

The Pro1000 primes at the bottom of the stroke… Make sure that you complete the down stroke all the way to correctly seat your primer! Failing to do this will lead to primers sitting high that could seize the shell plate…and will lead to firing issues down the line.

I do encounter other problems that are mostly caused by users not reading the instructions. I will post further articles here in due course.

I hope this helps.

Duane – 480BC