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Disassembly
Cell Top
1. Unscrew the cell cap and remove it. The strap wrench may be required.
2. Lift the pivot cap off of torsion spring module. This will expose the upper
torsion magnet.
3. Grasp the bob and unscrew (clockwise) the bob and bob shaft from the
torsion assembly at the top. Unscrew the bob from the bob shaft and
place them in cleaning solution.
A small stiff brush and a wash bottle filled with a suitable solvent are
useful tools when cleaning these parts. Be sure and run a brush through
the bob shaft to clean the bore.
4. Remove the two screws that hold the torsion spring module to the
coupling.
5. Use the torsion magnet to lift the stainless steel ball from the coupling.
Keep the ball on the magnet so that it will not be lost. This ball acts as
a check valve to prevent pressurization fluid from returning back to the
pump.
6. Place the torsion spring module into the cleaning solution. This module
must be cleaned carefully. Make sure that any caked solids in and around
the limit stop and the torsion spring are removed. A jet of cleaning solution
is useful for this.
The torsion assembly may have to be disassembled in order to
completely clean out caked solids on the spring assembly. Remember to
calibrate after re-installing the assembly.
