freightliner Custom Classic MT45 2022, Maintenance Manual

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Detroit Drive Axle Lubricants
*
IMPORTANT: Lubricant used in Detroit rear axles must
meet Mercedes-Benz specification 235.20 (mineral) or
235.8 (synthetic). Mobil Delvac ™ Gear Oil A 80W-90 and
Mobilube ™ HD-A Plus 80W-90 meet specification 235.20.
Mobil Delvac 1 Gear Oil 75W-90 and Mobilube 1 SHC
75W-90 meet specification 235.8. For more product
information, see http://bevo.mercedes-benz.com.
Type Ambient Temperature
SAE
Viscosity
Grade
Mineral Oil –15°F (–26.1°C) and up
†
80W–90
Synthetic Oil –40°F (–40°C) and up
†
75W–90
* Detroit rear axles do not require the use of friction modifiers.
†
There is no upper limit on the ambient temperature, but axle sump tem-
perature must never exceed 250°F (121°C).
Table 1, Detroit Drive Axle Lubricants
Detroit Drive Axle Lubricant Capacities
Axle Model * Capacity
†
: pints (L)
ARS–13.0–2 15 (7)
ARS–15.0–2 15 (7)
ARS–17.5–2 15 (7)
ARS–19.0–2 15 (7)
ARS–20.0–2 15 (7)
ARS–21.0–2 15 (7)
ARS–21.0–4 23 (11)
ARS–23.0–4 23 (11)
*
Model code may have a "D" in the prefix (for example, DA–RS–13.0–2).
†
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, Detroit Drive Axle Lubricant Capacities
Meritor Axle
1. Remove the filler plug, then the drain plug and
allow the differential to drain completely. See
Fig.
2 .
2. Install and tighten the drain plug securely.
3. Fill the differential with an SAE 80W–90 multipur-
pose gear lubricant, or an SAE 75W–90 multipur-
pose synthetic gear lubricant. See
Table 3 for
axle lubricant capacities. Either type of lubricant
must meet MIL L–2105–D and be suitable for
American Petroleum Institute service classifica-
tion GL–5. The lubricant level within the differen-
tial must be even with the bottom of the fill hole.
4. Install and tighten the fill plug securely.
Meritor Drive Axle Lubricant Capacities (single axle)
*
Axle Model Capacity
†
: pints (L)
RS-15-120 16 (7.6)
RS-17-145 33.6 (15.9)
RS-19-145 34.4 (16.3)
RS-21-145 32 (15.1)
RS-23-160 42 (19.9)
RC-23-165 42 (19.9)
* Single drive axles equipped with traction equalizers may require a "friction
modifier" to correct a slip-stick condition, as described in the vehicle driver’s
manual. Meritor’s experience shows that the following additives perform ad-
equately: Add Elco No. 2 Friction Modifier (1 ounce [30 ml] of additive for
each 1 pint [0.5 liter] of lube capacity) or Lubrizol No. 797 or 762 (one
ounce [30 mL] of additive for each 1 pint [0.5 liter] of lube capacity).
†
Quantities listed are approximate and include 1 pint (0.5 liter) for each
wheel end and with the drive pinion at 3 degrees.
Table 3, Meritor Drive Axle Lubricant Capacities
(single axle)
35–02 Axle Lubricant Checking
NOTICE
Failure to keep the rear axle filled to the proper
level with the recommended lubricant can result in
rear axle damage.
f350150
1
7
8
5
3
2
08/19/2009
4
6
1. Ratio Tag
2. Drain Plug
3. Limited Slip
Lubrication Tag
4. Filler Plug
5. Model Number
6. Axle Housing Breather
7. Manufacturing Date
8. Part Number
Fig. 2, Rear Axle Differential, Meritor Axle
Rear Axle
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Walk-In Van Chassis Maintenance Manual, July 2015
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