freightliner COLUMBIA CL112 Maintenance Manual page 82

Rear Axle
6.2 Install and tighten the fill plug 35 lbf·ft (47
N·m).
7. Whenever the interaxle differential housing has
been drained, add an additional 2 pints (0.9 L) of
the recommended lubricant directly into the inter-
axle differential housing.
8. Remove the chocks, then drive the vehicle, un-
loaded, for 1 or 2 miles (2 or 3 km) at speeds
not to exceed 25 mph (40 km/h), to thoroughly
circulate lubricant throughout the carrier and
housing assemblies.
Freightliner
IMPORTANT: On Freightliner axles, the oil
change interval for Schedule III and IV vehicles
is 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.
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 level ground, set the parking
brakes, and chock the tires.
IMPORTANT: Freightliner rear axles do not re-
quire the use of friction modifiers.
2. Clean the fill plug and the area around it. In the
axle housing rear cover, remove the plug from
the oil fill hole.
3. Place a drain pan under the rear axle drain plug.
Drain the oil when it is warm. At this tempera-
ture, 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 depos-
ited on each pole. Magnets will rapidly
lose their effectiveness as collected mate-
rial bridges the gap between the two
poles.
4.3 After the first oil is changed, inspect the
drain plug each time for large quantities
of metal particles.
Columbia Maintenance Manual, July 2005
4.4 After cleaning, install the drain plug(s)
and tighten to 41 lbf·ft (55 N·m).
5. Fill the axle with the recommended lubricant.
See Table 3 for recommended drive axle lubri-
cants and drive axle lubricant capacities.
Freightliner Rear Axle Approved Lubricant Type and
Capacity
Lubricant Type
80W/90 Gear Oil
Forward
75W/90 Synthetic
Tandem
Gear Oil
80W/90 Gear Oil
Single & Rear
75W/90 Synthetic
Tandem
Gear Oil
Table 3, Freightliner Rear Axle Approved Lubricant
Type and Capacity
NOTE: Some Freightliner axles have a small
tapped and plugged hole near and below the
housing oil fill hole. This smaller hole is for a
lubricant temperature indicator only, and
should not be used as a fill or level hole.
5.1 With the vehicle on a level surface, fill the
axle through the oil fill hole. Lubricant
should be level with the bottom of the oil
fill hole. To check fluid level, see
5.2 Install and tighten the fill plug 41 lbf·ft (55
N·m).
® ®
Dana Spicer
IMPORTANT: The use of friction modifiers is not
approved in Dana drive axles.
1. Park the vehicle on level ground, set the parking
brakes, and 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 (or standpipe, if installed in the oil
fill hole). See Fig. 3.
3. Place a drain pan under the rear axle drain plug.
See Fig. 3. Drain the oil at normal operating
temperature, 150°F to 200°F (65°C to 93°C). At
35
Oil Capacity:
Quarts (liters)
Axle
Hubs Hubs
Full Dry
14.3 15.9
(13.5) (15.0)
10.6 12.2
(10.0) (11.5)
Fig. 2.
35/3