Detroit® eAxle

ep3 mm 35.01.002
  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 Fig..

    • Top View

    • Rear View

    1. eCarrier Breather Hose

    2. Axle Housing Breather Hose

    3. Axle Housing Fill Plug

    4. eCarrier Breather

    5. Temperature Sensor Port

    Fig. 1, Detroit eAxle Tandem Axle (forward axle shown)

    3. 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.
    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.
    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.
    3. After the first oil is changed, inspect the drain plug each time for large quantities of metal particles.
    4. After cleaning, install the drain plug(s) and tighten to 30 lbf·ft (41 N·m).
  5. Fill the axle with the recommended lubricant. See Table. for lubricant capacities.

    Note: Some Detroit 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.
      1. 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 Fig..

        Important: Lubricant used in Detroit rear axles must meet Mercedes-Benz specification MB 235.31/Detroit Fluids Specification (DFS) 93K219.03. For more product information, see DDC-SVC-BRO-0119 on the DTNA Connect Portal.
        1. Install and tighten the fill plug 30 lbf·ft (41 N·m).

          Table 3, Detroit Rear Axle Lubricant Capacity, eAxle (Hubs Full)

          Detroit Rear Axle Lubricant Capacity, eAxle (Hubs Full)

          Axle

          Oil Capacity: Quarts (liters)

          Forward-Rear

          10.8 (10.2)1

          Single and Rearmost Tandem

          10.8 (10.2)1
          1. These values assume the wheel ends are properly lubricated. Actual oil capacity might vary slightly depending on gear ratio.

          Table 3, Detroit Rear Axle Lubricant Capacity, eAxle (Hubs Full)

          • Correct (lube level at bottom of fill hole)

          • Incorrect (lube level below fill hole)

          Fig. 2, Axle Lubricant Level Inspection

      Note:
      Parent topic: All Axle models
      Document Number: 0000121200
      Manual Publication Date: 2025-02-11
      Topic Publication Date: 2024-06-04