Axle Breather Checking
The axle housing breather must remain clean. See Fig.. When the axle lubricant level is checked, check that the axle breather is open. Check more often under poor operating conditions. If the breather is plugged, clean it or replace it as needed.
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Axle Housing Breathers
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Carrier Oil Fill Plugs
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Interaxle Differential
Fig. 1, Fill Hole Plug and Axle Housing Breather Locations
Table 1, Meritor Drive Axle Recommended Lubricant
|
Meritor Drive Axle Recommended Lubricant |
|||
|
Lubricant Type |
Ambient Temperature |
Viscosity Grade |
Meritor Specification |
|
Hypoid Gear Oil API Service Classification GL–5 |
10°F (–12.2°C) and up* |
85W–140 |
0–76–A |
|
–15°F (–26.1°C) and up* |
80W–90 |
0–76–D |
|
|
–40°F (–40°C) and up* |
75W–90 |
0–76–E |
|
|
–40°F (–40°C) to 35°F (2°C) |
75W |
0–76–J |
|
|
–40°F (–40°C) and up* |
75W–140 |
0–76–L |
|
|
Synthetic Gear Oil |
–40°F (–40°C) and up* |
75W–90 |
0–76–N |
|
–40°F (–40°C) and up1 |
75W–140 |
0–76–M |
|
- There is no upper limit on the ambient temperature.
Table 1, Meritor Drive Axle Recommended Lubricant
Table 2, Meritor Drive Axle Lubricant Capacities for Single Axles
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Meritor Drive Axle Lubricant Capacities for Single Axles |
|
|
Axle Model |
Capacity: pt (L)1 |
|
MS–10–113D |
14 (6.6) |
|
MS–12–113D |
15 (7.1) |
|
RS–13–120 |
18.4 (8.7) |
|
RS–15–120 |
14.3 (6.8) |
|
RS–17–145 |
33.6 (15.9) |
|
RS–17–144 |
32.3 (15.3) |
|
RS–19–144 |
32.3 (15.3) |
|
RS–19–145 |
33.2 (15.7) |
|
RS–21–145 |
32.3 (15.3) |
|
RS–21–160 |
39.5 (18.7) |
|
RS–21–230 |
38.9 (18.4) |
|
RS–23–160 |
39.5 (18.7) |
|
RS–23–161 |
39.5 (18.7) |
|
RS–23–186 |
47.3 (22.4) |
|
RS–23–240 |
37.4 (17.7) |
|
RS–26–185 |
38.0 (18.0) |
|
RS–30–185 |
38.0 (18.0) |
- Quantities listed are approximate and include 1 pint (0.5 liter) for each wheel end and with the drive pinion at 3 degrees.
Table 2, Meritor Drive Axle Lubricant Capacities for Single Axles
Table 3, Meritor Drive Axle Lubricant Capacities for Tandem Axles
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Meritor Drive Axle Lubricant Capacities for Tandem Axles |
||
|
Axle Model |
Axle Position |
Capacity1 |
|
RT–40–145 |
Forward |
30.2 (14.3) |
|
Rear |
25.8 (12.2) |
|
|
RT–40–145P |
Forward |
30.2 (14.3) |
|
Rear |
25.8 (12.2) |
|
|
RT–40–160 |
Forward |
39.1 (18.5) |
|
Rear |
34.4 (16.3) |
|
|
RT–44–145 RT–44–145P |
Forward |
29.3 (13.9) |
|
Rear |
25.1 (11.9) |
|
|
RT–46–160 |
Forward |
39.1 (18.5) |
|
Rear |
34.4 (16.3) |
|
- Quantities listed are approximate and include 1 pint (0.5 liter) for each wheel end and with the drive pinion at 3 degrees.