freightliner M2 Plus Maintenance Manual page 98

35
this type that operate continuously at high
temperatures must be changed more frequently.
NOTICE
Failure to change the axle lubricant at more
frequent intervals, when adverse operating
conditions require, could result in axle damage.
Detroit®
IMPORTANT: On Detroit axles, the oil change
interval for long haul vehicles can be extended
to 500,000 miles (800 000 km) for axles with
weight ratings of 34,000 to 40,000 lb (15 000 to
18 000 kg) using synthetic lubricant if a lubricant
analysis shows adequate quality. Oil must be
changed at least every four years, and more
often if the axle is exposed to high temperatures
and steep grades.
1. Park the vehicle on a level surface, shut down
the engine, and set the parking brake. Chock the
tires.
2. Clean the fill plug and the area around it. In the
axle housing rear cover, remove the plug from
the oil fill hole. See
CAUTION
Be careful when draining the axle oil. It may be
very hot, and could cause personal injury if it
contacts the skin.
3. Place a drain pan under the rear axle drain plug.
Drain the oil when it is warm. At this
temperature, the oil will run more freely and
ensure that the axle is flushed.
4. Clean the fill and drain plugs. Change them if
necessary.
4.1 For magnetic plugs, use a piece of key
stock or any other convenient steel slug
to short the two magnetic poles and divert
the magnetic field.
4.2 Clean away the collected material
deposited on each pole. Magnets will
rapidly lose their effectiveness as
collected material bridges the gap
between the two poles.
35/4
Fig. 3.
2
A
1
4
B
12/07/2010
A. Front View
1. Axle Breather
2. Breather Hose
3. Temperature Sensor Port
4. Oil Fill Plug
Fig. 3, Detroit Tandem Axle (forward axle shown)
4.3 After the first oil is changed, inspect the
drain plug each time for large quantities
of metal particles.
4.4 After cleaning, install the drain plug(s)
and tighten to 30 lbf·ft (41 N·m).
Business Class M2 Plus Maintenance Manual, 02/10/2023
Rear Axle
2
3
f350509a
B. Rear View