1 OPERA TION

Step 16: Before Leaving the Parking Area

• Remove chocks from the wheels.

• T est trailer hook - slowly pulling while applying the trailer brakes with the trailer brake hand control

• T est the service brakes before leaving the parking area.

• T est parking brakes stopping a 20% grade and applying the parking brakes. The parking brakes shall hold the combined vehicle and trailer without moving.

New V ehicle Break-In

T o ensure many years trouble - free the following breakprocedures are recommended:

Note: Oil change, filter change and chassis lubrication are longer required the 3,000 - mile vehicle breakinterval.

Refer the preventive maintenance schedules outlined 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

• Engine oil

• Oil filters

• Fuel filters

• Coolant conditioner

Note: important that components filled with lubricants meeting the specifications given the Maintenance and Lubrication

Note: When checking oil the vehicle must parked level and the units normal operating temperature. Components must filled the correct NOT

Note: Oil and filter change intervals this manual pertain components built Mack T rucks, Inc. For information concerning oil and oil filter change intervals for vendor refer the specific vendor component service

During the First 5000 Kilometers (3000 Miles)

• After the first 200 (125 miles), retorque the wheel nuts using accurately calibrated torque wrench. Recheck this torque again after 800 (500 miles).

• Check oil and coolant levels frequently

• Check brake and clutch adjustments per recommended maintenance schedule, and adjust needed.

• Observe the instruments often, and shut down the engine the first sign any abnormal readings.

• Report all loose unusual the service representative the nearest Mack dealership they can checked and

• Check the spring clip torquebolts). (On REYCO suspensions, also check equalizer nut torque.)

• chassis equipped with AIR TEK™ front axle air retorque the U -

• Check the U - bolt torque the MACK air suspension the end the first 1600 (1000 miles).

After the First 5000 Kilometers (3000 Miles) Before 6400 Kilometers (4000 Miles) Before 3 4 Months

• Retorque the spring clip - (On REYCO also retorque the equalizer

Note: chassis equipped with AIR TEK™ front axle air check the torque the front axle U - bolts 000 kilometers (15,000 miles).

Initial V alve Adjustment Intervals initial valve lash and unit injector pre - load check and adjustment must performed the end the first 200 000 months whichever occurs the First A Inspection Interval the first A inspection the front and rear axle and the steering knuckle axle beam clearance need T ake your vehicle your MACK dealer have this service

For more information the Initial V alve Adjustment Intervals, refer the Maintenance and Lubrication Manual (TS494).

For more information maintenance intervals, refer the Maintenance and Lubrication Manual (TS494).