freightliner 122SD, Maintenance Manual

Page: 80 / 132

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.
Meritor Drive Axle Lubricant Capacities
Axle Model Capacity
* : pt (L)
Single-Drive, Single Reduction
RS–21–160 39.5 (18.7)
RS–23–160 39.5 (18.7)
RS–23–161 37.2 (17.6)
RS–23–185 47.3 (22.4)
RS–23-186 47.3 (22.4)
RS–26-185 46.0 (22.0)
Tandem-Drive, Single Reduction
MT–40–143MA–N
Forward 30.2 (14.3)
Rear 25.8 (12.2)
RT–40–145, RT–40–145A,
RT–40–145P
Forward 30.2 (14.3)
Rear 25.8 (12.2)
RT–40–160
Forward 39.1 (18.5)
Rear 39.4 (16.3)
RT–44–145, RT–44–145P
Forward 29.3 (13.9)
Rear 25.1 (11.9)
RT–46–160, RT–46–160P
Forward 39.1 (18.5)
Rear 34.4 (16.3)
RT–46–164EH/P
Forward 38.0 (18.0)
Rear 33.0 (15.0)
RT–50–160
Forward 38.0 (18.0)
Rear 33.0 (15.0)
RT–52–185
Forward 56.1 (26.5)
Rear 36.1 (17.1)
RT–58–185
Forward 56.1 (26.5)
Rear 36.1 (17.1)
Meritor Drive Axle Lubricant Capacities
Axle Model Capacity * : pt (L)
RT–70–380
Forward 54.4 (25.7)
Rear 53.1 (25.1)
* Quantities listed are approximate. Fill axle until lubricant is level with bot-
tom of fill hole with vehicle on level ground.
Table 4, Meritor Drive Axle Lubricant Capacities
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. 4 .
3. Place a drain pan under the rear axle drain plug;
see
Fig. 4 . Drain the oil at normal operating tem-
perature, 150°F to 200°F (65°C to 93°C). At this
temperature, the oil will run more freely and en-
sure that the axle is flushed.
NOTE: Some tandem-drive axles are equipped
with a cylindrical magnetic strainer, located
below the lube pump on the front of the power
f350018a 05/27/93
1
2
1. Oil Fill Plug 2. Oil Drain Plug
Fig. 4, Dana Spicer Axle Housing Drain and Fill Plugs
Rear Axle
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122SD and Coronado 132 Maintenance Manual, February 2016
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