REMOVAL OF PRESSURE LIMITER 1. Clean pump externally with clean solvent to remove debris. 2. Using a 22 mm wrench, remove the pressure limiter. (L100) 1. Lubricate the external O-ring (L020) using petrolium jelly. 2. Install the new pressure limiter. Using a 22 mm socket, torque to 63-77 N•m [46-57 lbf•ft]. INSTALLATION OF PRESSURE LIMITER PRESSURE LIMITER ADJUSTMENT To adjust the pressure limiter setting, the motor output shaft must be locked. Lock the vehicle’s brackes or rigidly fix the work function so it cannot rotate. 1. Install a 600 bar [10,000 psi] pressure gage in the high pressure gauge ports (MA and MB). Install a 50 bar [1000 psi] pressure gauge in the pump charge pressure gauge port (M3). 22 mm 63-77 N•m [46-57 lbf•ft] L100 L020 2. Start the prime mover and operate at normal speed. 3. Use a 17 mm wrench to loosen the locking nut, 4. Use a 5 mm internal hex wrench to turn the pressure adjusting screw. 5. The factory preset pressure limiter setting is shown on the model code located on the serial number plate. It is referenced to charge pressure. The pressure limiter setting is the difference between the high and low pressure sides of the system loop. Activate the control input so that pressure increases in the high pressure side of the closed circuit to the pressure limiter pressure setting. The pressure limiter setting is reached when the pressure stops increasing and remains steady (as shown on the gauges). System pressure gauge port MB (on bottom) 5 mm Pressure limiter locking nut 17 mm P104 465E 12 N•m [8.9 lbf.ft] System pressure gauge port MA 0 - 600 bar [0 - 10,000 psi] 1/4 inch 20-27 N•m [15-20 lbf•ft] 0 - 600 bar [0 - 10,000 psi] 20-27 N•m [15-20 lbf•ft} Charge pressure gauge port M3 0 - 50 bar [0 - 1000 psi] 20-27 N•m [15-20 lbf•ft] HPRV valve Pressure limiter adjusting screw 1/4 inch 1/4 inch Warning Unintended movement of the machine or mechanism may cause injury to the technician or bystanders. To protect against unin- tended movement, secure the machine or disable/ disconnect the machanism while servicing. © Danfoss, 2013 BLN-10278 • Rev AC • September 2013 1 Service Kit Instructions H1 pump Pressure limiter replacement procedure