Peterbilt 579 - Transmission Maintenance; Introduction

TRANSMISSION MAINTENANCE
5
TRANSMISSION
MAINTENANCE
Introduction
Proper maintenance of the
transmission will ensure that the
vehicle will operate efciently.
To
check the transmission uid level,
park the vehicle on level ground. For
an automatic transmission the oil level
should be checked with the engine
idling and the transmission uid at
operating temperature. Checking the
uid of a manual transmission may be
done with the engine off.
The recommended
uid replacement
intervals contain an initial change and
a separate interval for the changes
after the initial drain. When the oil
needs to be replaced, be sure to refer
to the manufacturer’s literature on
the correct grade and type of oil to
purchase.
For more
details, please refer to
the maintenance section in the
transmission manufacturer’s manual
or service literature.
CAUTION
When adding oil, types and brands of
oil should not be intermixed because
of possible incompatibility, which could
decrease the effectiveness of the lubri
-
cation or cause component failure.
Initial Change: drain and replace
according to
Preventive Maintenance
Schedule on
page 5-12; for some
transmissions this
may not be required.
Oil Change
Change uid
according to change
procedures specied in the
Transmission Service Manual.
Use the recommended types of oil
as specied in the Operation and
Service Manual (included with vehicle).
Select from the appropriate lubricant
for varying ambient (outside air)
temperatures.
5-146 Y53-6047–2C (04/13)