110 OPERATION Step 16: Before Leaving the Parking Area • Remove chocks from the wheels. • Test trailer hook-up by slowly pulling while applying the trailer brakes with the trailer brake hand control valve. • Test the service brakes before leaving the parking area. • Test parking brakes by stopping on a 20% grade and applying the parking brakes. The parking brakes shall hold the combined vehicle and trailer without moving.
New Vehicle Break-In To ensure many years of reliable, trouble-free operation, the following break-in procedures are recommended: Note: Oil change, filter change and chassis lubrication are no longer required at the 3,000-mile vehicle break-in interval. Refer to the preventive maintenance schedules outlined in the Maintenance and Lubrication Manual (TS494) for recommended lubrication change intervals for the following items: • Gear oils (transmission, rear axle carrier[s], front drive axle carrier, transfer case, flywheel PTO) • Engine oil • Oil filters • Fuel filters • Coolant conditioner Note: It is important that components be filled with lubricants meeting the specifications as given in the Maintenance and Lubrication Manual. Note: When checking oil levels, the vehicle must be parked on level ground, and the units at normal operating temperature. Components must be filled to the correct level. DO NOT OVERFILL. Note: Oil and filter change intervals in this manual pertain to components built by Mack Trucks, Inc. For information concerning oil and oil filter change intervals for vendor components, refer to the specific vendor component service literature. During the First 5000 Kilometers (3000 Miles) • After the first 200 km (125 miles), retorque the wheel nuts using an accurately calibrated torque wrench. Recheck this torque again after 800 km (500 miles).
