SAFARI

24 POWER STEERING inserting the fit bolts and tightening the nuts. (Refer to the technical data for the tightening torques). 4. Bring the steered wheels of the vehicle to the straight ahead position. This positions is reached when the steered wheels are flush or parallel to the second pair of wheels (Place the measuring bar on the front and rear wheel). 5. Slide the steering drop arm onto the sector shaft (30), whereby the markings of the steering drop arm and the segment shaft must coincide.Tighten the hexagon nut (35) temporarily and turn the steering clockwise until the wheel stop. Remove the steering drop arm and establish whether there is steering reserve in the steering unit by continuing to turn the steering wheel . Repeat the measurement in clockwise direction. Tighten the hexagon nut (35) with torque given below and secure with plate (36). Hook on and tighten the drag link. 6. Secure the hydraulic pump on the mounting bracket and adjust the necessary tension of the V – belt. Thumb test. 7. Connect the pressure and return lines between the pump, steering and working cylinders. If the lines have to be bent then this must be carried out in a cold condition so that the risk of combustion is eliminated. 8. Commissioning the steering unit In order to prevent dirt particles which still could be in the oil line system, fromentering the pressure limiting valve during first commissioning, we recommend that the oil is allowed to flow through the system for several minutes, with changing engine speed and without turning the steering wheel.The steering should then be turned several times in both directions without completely reaching the stops of the steering system at a medium engine speed (until the operating temperature is reached). Finally bleed the steering unit (see section III). X. Faults and remedies : The ZF hydraulic ball nut steering system in short form is designed to meet exacting requirements. The unit is designed in such a way that no faults can occur in the case of correct maintenance and normal operation. However, if a fault should occur the following information should contribute to establishing and rectifying the fault. Before the steering unit is checked for the individual faults, the oil level must first be checked with the engine running. The oil filling procedure is described in section II. We would also like to draw your attention to the fact that the use of heavily foaming oil may lead to faults, since such oil release air with great difficulty or not at all, once it has entered the steering system.