Mechanic's Items

1. Daily Tips

2. Weekly Maintenance

3. Compressor Fluid Levels

4. 12V Battery Jump

5. Is the Bus Experiencing Vibration Issues?

Daily Tips

Personal protective equipment (PPE)

In addition to the PPE that is normally worn in a shop environment, PPE that protects the wearer against high voltage contact or arc flash must also be worn when appropriate. See examples below:

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Weekly Maintenance

• Verify the functionality of interior and exterior lights
• Verify horn operation
• Check windshield washer spray and wiper operation and replace blades as needed
  
  

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Compressor Fluid Levels

• Check every compressor weekly and top off its fluid if low. Report to the dealer if levels are frequently low
  
  

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12V Battery Jump

If the Low Voltage Battery Disconnect switch is ON and the Ignition Key switch is turned ON and the dash does not respond or only states “LOW VOLTAGE” in the message center, you will need to perform a Low Voltage Jump Start.

• Turn the ignition key switch to the OFF position
  
  
• Open the Low Voltage (12 volt) battery access door. Turn the Low Voltage Disconnect Switch to the OFF position
  
  
  
• Pull up on the spring latch handles and slide the battery tray out to access the battery terminals
• Using a 6 amp minimum Jump Box or battery charger, carefully connect the cable clamps to the proper terminals (positive to positive and negative to negative). Do not allow the clamps to touch each other or the other terminals
• Wait five minutes to allow the bus batteries to build an initial charge
• Leave the charging cable connected and turn the Low Voltage Disconnect Switch to the ON position
• Turn the Ignition Switch to the ON position

• Check to ensure that the parking brake is engaged. Pull out the yellow parking switch to engage, if needed
  
  
  
• Turn the Ignition Switch to the Start / Crank position and release. The Power ON process may take up to 1 minute. The Vehicle HV Enabled indicator will illuminate
  
  
  
• Allow the Low Voltage status to clear then disconnect the charging cables. Return the battery tray to its stowed position and close the access door
  
  

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Is the Bus Experiencing Vibration Issues?

Addressing a vibration issue

If the bus is experiencing vibration problems, it’s crucial to inspect it thoroughly before putting it out of service. To do so, please follow these steps:

Front End Vibration

• Check front tires for uneven wear
• Lift the front axle and check for loose wheel bearings and front end play

Rear End Vibration

• Check the rear tires for uneven wear
• Adjust tire pressure to see if there is a change in vibration
• Inspect driveline weights to ensure they are intact
• Grease driveline to see if there is a change in vibration
• Check trans and motor mount area for leaks or metal debris
• Inspect motor mounting and rear housing bolts for securement

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