ENGLISH SERVICE MANUAL124 33015500(3)2008-02 RS 501HYDRAULIC SYSTEMHYDRAULIC SYSTEM OIL PRESSURE CHECK AT THE ACCESSORY AND STEERING SYSTEM PUMPNOTEThis check is necessary in case of malfunction of the accessory system and steering system.Preliminary operationsEmpty the hopper (3); if it contains a small quantity of waste, it is not necessary to dump it.Drive the machine on a solid and level ground, then engage the parking brake with the lever (66).Turn the ignition key (76) to OFF position and remove it.Remove the screws and the right panel (22) on the right side of the cab.Connect a pressure gauge (E) with a minimum scale of 150 Bar equipped with the extension.Measure the accessory and steering system pump pressure according to the following procedure.Pressure measurementStart the machine and run the engine at maximum speed (as shown in the User Manual). In this condition, engage the lever(F) to lift the hopper and check that the pressure measured by the pressure gauge (E) is 120 Bar approximately.If the pressure is normal, disengage the lever (F) and turn off the machine.If the pressure is higher or lower, it can be adjusted according to the following procedure, while keeping the machineaccelerated and the lever (F) engaged.Pressure adjustmentUnscrew the cap (G).Loosen the locknut (H) and slightly turn the internal threaded dowel (I) to adjust the pressure. If the pressure cannot beadjusted to normal values, probably the pump needs to be replaced (see the procedure in the relevant paragraph).Disengage the lever (F) and turn off the machine.Tighten the locknut (H) and screw down the cap (G).ResetPerform steps 4 and 5 in the reverse order.1.2.3.4.5.6.7.••8.9.10.11.12.
