16 Vehicle Inspection Guide Engine starting (with parking brake applied) Steering linkage free play Inspect for excessive free play in the steering linkages. The steering wheel should have less than 2 inches (5 centimeters) of free play at its rim. Full power hydraulic brake inspection Pump the brake pedal several times with the ignition in the off or run position. You can momentarily hear the motor and pumps replenishing the accumulators. Parking brake Verify the parking brake holds the vehicle by gently trying to pull forward with the parking brake applied. Air brakes Verify operation using the following procedure. Chock the wheels, if necessary.
Push in the parking brake and, on tractors, push in the tractor parking brake knob: 1. Verify the air compressor or governor cutout pressure is approximately 120 psi (827 kPa). 2. Turn off the engine, and then turn the key back to the on position (without starting the engine). 3. Without the brake pedal applied, note the air pressure drop for one minute. It should be less than 2 psi (14 kPa) for single vehicles and 3 psi (21 kPa) for combination vehicles. 4. Press and hold the brake pedal with 90 psi (621 kPa) or more. Make sure there is no more than a 3–psi (21 kPa) per minute leak for single vehicles and a 4–psi (28 kPa) per minute leak for combination vehicles. 5.
Pump the brake pedal to deplete the system of air pressure. The warning light and tone should turn on at 57 psi (393 kPa). 6. Pump the brake pedal and make sure the parking brake and trailer parking brake knobs pop out at 20 psi (138 kPa) or higher. Automatic transmission fluid Verify that the fluid level is in the proper operating range. See Transmission fluid check in the Maintenance chapter. 2015 F-650/750 (f67) Owners Guide gf (ownloose) , 1st Printing, December 2013 Canadian_French (fr_can)