Reversing the Statler Z Motor drive

Symptoms: Squealing Bushings

Possible Problem: Oil not getting to the entire bushing

Proposed Solution: Rotate the shafts in reverse using the Statler drive.

Explanation: The bushing/shaft interfaces are oiled through the main oiling reservoir, distributed through the machine via the orange wick filled tubing, and into ports at each bushing pumped through by the spiral groves cut into the shaft. Sometimes the oil does not distribute completely to one end of the bushing causing a squealing or howling sound. If the motor is run in reverse from time to time for 10 – 15 minutes, the oil is pumped in the opposite direction, lubricating the dry area. To achieve this with a Statler Stitcher perform the following:

Remove the thread and bobbin case.

At the PrecisionStitch menu bar:

Select Options,
Select Technical Support,
Select Terminal,
Click yes button in the “Restricted Area” pop up and the “Terminal Screen” window will appear.

NOTE: In versions prior to 7.0, the Terminal can be selected from the Options menu (see #1 above).

At the Terminal Screen’s “:” prompt enter the following commands:

SHZ [enter]
JGZ=-20000 [enter]
BGZ [enter] At this point the motor will run in reverse at about 30% speed; let it run for 10 – 15 minutes.
To turn the motor off, exit the software by closing all the open PrecisionStitch windows