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Lubrication and Maintenance
Hazard Alert Messages
Read and observe all hazard alert messages in this publication.
DANGER
Park the vehicle on a level surface. Block the wheels to prevent
the vehicle from moving. Support the vehicle with safety stands.
NEVER work under a vehicle supported only by jacks. Jacks can
slip and fall over. Failure to use safety stands can result in death
or serious personal injury and damage to components.
WARNING
To prevent eye injury, always wear eye protection when
performing vehicle maintenance or service.
WARNING
Dispose of all lubricants in accordance with state and local laws.
Failure to do so can result in harm to the environment.
WARNING
Always remove excess grease after application. Excessive grease
that can fall from the vehicle is a DOT violation in some states
and Canada and should be avoided.
Lubrication
Drive axles generate small metal wear particles at a fairly steady
rate, especially during the break-in period. If these fine, but hard
particles are allowed to circulate in the lubricant, along with
external moisture and dirt, internal components will wear at a
much faster rate than normal.
Magnets and Magnetic Drain Plugs
Meritor front driving axles are equipped with magnetic drain plugs
that have a minimum pickup capacity of 1.5 pounds
(0.7 kilograms) of low carbon steel.
The magnetic drain plug can be reused if, after cleaning, the plug
has a minimum pickup capacity of 1.5 pounds (0.7 kilograms) of
low carbon steel. Inspect the magnetic drain plug each time the oil
is changed. Use the correct part. Pipe plugs will leak if used as a
drain plug.
(16579)
Printed in USA
11
Seals
Always use the correct tools and procedures when replacing
seals to prevent incorrect installation and help prevent seals
from leaking.
Seals keep lubricant in and dirt out of a component. When they
are worn or damaged, seals leak and produce low lubricant levels
which may damage components.
Durable triple-lip seals, standard in Meritor axles, protect
the quality and levels of the lubricant and provide superior
performance.
Breather
Close or cover all openings, including breather, oil drain
and speed sensor, before steam cleaning. Steam can cause
component damage.
Baffle-type breathers help keep axles free from external moisture
and dirt which can cause premature oil and component failure.
Refer to Section 12 Specifications on page 77 for breather
torque.
Temperature Indicators
Meritor axles can operate above 190°F (88°C) without damage.
However, if the oil temperature reaches 250°F (121°C), stop
the vehicle immediately and check for the cause of overheating.
Damage to components can result.
Many Meritor axles have a tapped hole in the housing for the
installation of a lubricant temperature indicator that will help reduce
the failure of axle parts from overheated oil.
Check and Adjust the Axle Oil Level
1.
Verify that the vehicle is parked on a level surface.
2.
Remove the fill plug from the axle.
3.
The oil level must be even with the bottom of the fill plug
hole.
If oil flows from the hole when the plug is loosened:
The oil level is high. Let the oil drain to the correct level.
If the oil level is below the bottom of the fill plug
hole: Add the specified oil.
Copyright Meritor, Inc., 2023
Lubrication and Maintenance
CAUTION
CAUTION
CAUTION
MM-0170 / Revised 03-23
Page 65
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