Mack Vehicle MRU613

The engine turbocharger operates at very high speed, temperatures and pressure. Turbo bearing lubrication is critical, particularly for a newly installed turbo or one which has not been operated for a period of time and all oil has drained from the bearing and shaft surfaces. To avoid turbocharger bearing failure, the following instructions are recommended:

• Start the engine at least every 30 days to ensure turbo bearing lubrication.

Operate engine at low idle for at least three minutes before increasing RPM or driving the vehicle.

• If the engine has not been run for more than 30 days, turbo pre-lube procedure is necessary:

1. Remove turbo air intake duct and oil line connection at turbo.

2. Fill oil inlet fitting to overflow with clean engine oil.

3. Using fingers at compressor wheel, carefully spin and wiggle the turbo shaft to distribute the oil over all bearing surfaces.

4. Reconnect air intake duct and again fill turbo oil port to overflow, connect oil line and start engine.

5. Operate engine at low idle for at least three minutes before increasing RPM or driving the vehicle.;

Recommendations for the first 30 days.

Wash the vehicle by hand with cool water, a mild car wash solution and a soft cloth or sponge.

Was the vehicle washed in the shade, never in direct sunlight?

Did you avoid dry wiping the finish and always use clean water?

Did you avoid parking near factories with heavy smoke fallout for extended periods of time?

Did you clean off bird droppings as soon as possible?

Did you avoid spilling gasoline, diesel fuel, oil, antifreeze, transmission fluid or any solvents of the like on the new finish?

Did you avoid scraping ice or snow from surface and brushed off the loose material with a soft snow brush?

Sign off on the initial 30 days exterior washing

CAUTION: Do not clean the underside of the fenders, cab, chassis, etc. without protecting your hands and arms. You may injure yourself on sharp-edged parts.

Soften the dirt on your cab with plenty of water and rinse.

Clean truck with a soft sponge/brush starting at the roof and working downward using slight pressure.

Rinse the sponge or brush often to keep it clean.

Clean wheels and dirtier areas with a separate sponge/brush.

Rinse truck thoroughly with water and wipe dry with a soft clean chamois or all cotton towels to avoid surface scratches and water spotting.

Sign off on the cab / hood maintenance

Warning: UNDER NO CIRCUMSTANCES should you drive on underinflated or overloaded tires. A tire in this condition builds up excessive heat which can result in sudden tire destruction, property damage and personal injury.

Enter the current tire inflation pressure

Is the tire inflation pressure within the manufacturer's recommended range?

Upload a photo of the tire pressure gauge reading

Did you check the tire pressure while the tires were cold?

Enter any additional observations or issues noticed during the inspection

Sign off on the tire inflation pressure inspection

Warning: Measurement of the oil level must be taken on level ground.

Best time to check oil level is while the engine is COLD or after the vehicle has sat approximately 2 hours.

CAUTION: Failure to wait a sufficient amount of time will result in an inaccurate dipstick reading.

The level must be close to the FULL line on the dipstick, but must NOT exceed the FULL line.

Is the vehicle on level ground?

Is the engine cold or has the vehicle sat for approximately 2 hours?

Enter the engine oil temperature

Is the oil level close to the FULL line on the dipstick?

Sign off on the daily engine oil level check