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1.
Tighten the jaws of the vice on the flats of the test cell with the SGSM
Drive Assembly facing up.
2. Use a crescent wrench to hold the bob shaft housing in place.
3. Unscrew the black SGSM base collar.
4. Unscrew the magnetic housing on top of the cell.
5. Fit the strap wrench around the magnet on top of the shaft.
6. The bob shaft has a left-handed thread. Using the strap wrench, unscrew
the shaft from the bob by rotating the shaft clockwise. The magnet is
press fit onto the shaft and should move as one piece. If the magnet turns
on the shaft, skip to Procedure 2.
7. When the shaft has disengaged completely from the bob, carefully
remove the shaft by grasping the magnet and pulling straight up.
8.
Use a ⅝” wrench to loosen the thermocouple connection and pull it
straight up to make sure it pulls clear of the set cement.
9. Remove the drive adapter by unscrewing it from the cell cap with a
crescent wrench.