Detroit™ New Final Drive

p4 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 carrier housing, remove the plug from the oil fill hole. See Fig. for the forward axle, and Fig. for the rear axle .

    Fig. 1, Detroit™ New Final Drive Forward Axle, Oil Fill Location

    Fig. 2, Detroit™ New Final Drive Rear Axle, Oil Fill Location

    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.
  5. Fill the axle with the recommended lubricant. See Table. for recommended drive axle lubricants and Table . for lubricant capacities.
    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..

      • Correct (lube level at bottom of fill hole)

      • Incorrect (lube level below fill hole)

      Fig. 3, Axle Lubricant Level Inspection

      2. Note: Detroit rear axles do not require the use of friction modifiers.
    2. Install and tighten the fill plug 30 lbf·ft (41 N·m).

      Table 1, Detroit Drive Axle Lubricant, New Final Drive

      Lubricant

      Type

      Ambient Temperature

      Must meet Detroit Fluids Specification DDC-SVC-BRO-0119

      Synthetic

      –40°F (–40°C) and up 1

      1. There is no upper limit on the ambient temperature.

      Table 1, Detroit Drive Axle Lubricant, New Final Drive

      Table 2, New Final Drive Oil Capacity, New Final Drive

      Axle Type

      Oil in Hubs (2)

      Oil in Axle

      NFD Model 4 Forward Axle TP

      1.8 L

      9 L

      NFD Model 4 Rear Rear Axle TP

      1.8 L

      7.5 L

      NFD Model 4 Forward Axle SP

      1.8 L

      14 L

      NFD Model 4 Rear Rear Axle SP

      1.8 L

      11 L

      NFD Model 6 TP

      1.8 L

      9.5 L

      NFD Model 6 SP

      1.8 L

      11 L

        Table 2, New Final Drive Oil Capacity, New Final Drive

    Note:
    Parent topic: All Axle models
    Document Number: 0000103614
    Manual Publication Date: 2024-05-14
    Topic Publication Date: 2025-03-11