226 dp indicator
The DPU thrust pipe shaft is linked to the signaling mechanism’s motion supporter rod. In reaction to the differential stress introduced, the torque tube rotor rotates. The torque tube belt motion is transferred through the motion supporter frame and the related system to place the identifying pointer at the place on the index scale closest to the differential stress felt by the DPU.
A polyethylene sac is used to safeguard the tool from contamination for applications needing unique cleaning / precautions. This bag should only be removed under conditions of extreme cleanliness. M226 checks the ride elbow for torque tube connection for tightness by introducing torque created by the DPU to a fixed drive elbow. Pressure should be implemented gently as torque is transferred to the link through the torque tube ride shaft and not the torque tube itself.