Note: Fitting clamping arm: 1) Set up clamping arm with spring washer and screw without play. 2) Turn clamping arm into position. 3) Hold clamping arm fixed with wrench and tighten screw.
Clamping arm removal: 1) Hold clamping arm fixed with wrench and loosen screw. 2) With light blows from below (plastic hammer), separate clamping arm from the piston rod.