12. OPERATION 4. Take the point where it crosses the performance curve as C , and draw a perpendicular line down. Take the point where this line crosses the travel speed scale as D . 5. The following information can be obtained from this procedure. From point D : Maximum permissible speed = 29.5 km/h (18.3 MPH) From point C : Speed range = F4 This maximum permissible speed is one guideline determined from the retarder brake performance, so on an actual jobsite, deter- mine a safe travel speed to match the conditions of the jobsite so that the retarder brake oil temperature gauge is always in the green range when traveling below the maximum permissible speed.
Brake performance [Downhill distance: 450 m (1476 ft)] (Standard tire 24.00-35) 2-74