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© 200423 3-1 Inspection and adjustment STEERING BOX ΧΦ65/75/85 series 7 3 3. INSPECTION AND ADJUSTMENT 3.1 INSPECTION AND ADJUSTMENT, WHEEL DEFLECTION LIMITING VALVES Inspection of wheel deflection limiting valves Connect the pressure gauge (DAF no. 0535653) to the delivery line using a T-piece. Connect the T- piece as quickly as possible to avoid air getting into the system. Check the steering oil level in the reservoir after connecting the T-piece and top up the oil if required. 2. Bleed the steering gear. To do so, run the engine at idling speed for approx. 2 minutes, without steering. 3. Jack up the steerable axle(s). 4. Warm the steering oil as described below, until the lines are hand warm at least. - Set the engine speed to 1200 - 1400 rpm. - Activate the steering gear for 5 seconds at its maximum, making sure that the pressure does not exceed 50 bar. - Do not touch the steering wheel for 5 seconds. - Continue this operation until the required temperature is reached. Note: If the steering oil is too cold, considerably higher pressures will be measured. 5. Turn the steering wheel fully left. 6. Set the engine speed to 1200 - 1400 rpm. 7. Fit a torque wrench with a dial to the steering wheel nut and tighten the nut to a tightening torque of 45 Nm on the torque wrench. 8. The pressure gauge will indicate the final limiting pressure. Compare the reading with the maximum permissible value. See 'Technical data'. If the value measured is too high, the wheel deflection limiting valves should be re-adjusted. 9. Carry out the measurement once again, with the steering wheel being turned fully to the right. 10. Remove the jack. 11. Remove the pressure gauge. S7 00 585 45Nm 45Nm S7 00 565 |