User Manual

Every 111,000 mi / 180,000 km / 3 yr
Main and Auxiliary Transmission – (VOCATIONAL and OFF-HIGHWAY)
• Drain lubricant while warm. Flush each unit with clean flushing oil and refill. Contact your PACCAR Powertrain distributor to
drain the transmission.
Every 223,000 mi / 360,000 km / 4 yr
Main and Auxiliary Transmission – (CITY DELIVERY)
• Drain lubricant while warm. Flush each unit with clean flushing oil and refill. Contact your PACCAR Powertrain distributor to
drain the transmission.
Every 335,000 mi / 540,000 km / 4 yr
Main and Auxiliary Transmission – (ON-HIGHWAY)
• Drain lubricant while warm. Flush each unit with clean flushing oil and refill. Contact your PACCAR Powertrain distributor to
drain the transmission.
Troubleshooting
Diagnostics
In the event there is a problem with this
transmission, there are three primary tasks
the driver should perform:
1. Note the driving condition under
which the problem occurred.
2. Note the condition of the
transmission under which the
problem occurred (such as
operation mode (Drive, Manual,
LOW), current gear, and engine
speed).
3. Reset system.
MAINTENANCE - Troubleshooting
Y53-1331 (6/21) 35
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