18. Operate the pump to build up the pressure to 70 bars (1000 psi) read on gauge M2. 19. The clutch lock control rod being in neutral position-pressure gauges Ml and M2 must give the same reading. 20. Bring the screw B of fixture 630- 43/20 in contact with the control rod and screw in by 13 turns. Release the pump bleed screw «d». Pressure given by gauge M2 must drop to zero while remaining unchanged on gauge Ml. 2550