3000 Series

s2 m 26.04.002

Caution: To prevent dirt from entering the transmission, use only clean containers and fillers for the transmission fluid. Do not use fillers or containers that have been used for water or antifreeze. Dirt, water, or antifreeze could damage the transmission.

  1. Park the vehicle on a level surface and apply the parking brakes.
  2. Operate the vehicle until the transmission reaches normal operating temperature: 160 to 200°F (71 to 93°C).
  3. Clean the area around the drain plug and the transmission fluid pan. Place a drain pan under the transmission and remove the drain plug. Examine the fluid as it drains. If only the filter is being changed, do not drain the fluid.
  4. Remove the 12 mounting bolts (6 each) from the 2 filter covers.

    5. Note: A lot of fluid will drain when the filter covers are removed.

  5. Remove the filter covers, O-rings, and two square-cut seals from the transmission. See Fig..

    1. Filter Cover

    2. Filter Element

    3. Filter Element O-Ring

    4. Square-Cut Seal

    Fig. 1, Allison 3000 Series Transmission Filter Location and Components

  6. Remove the filters from the bottom of the control module.
  7. Lubricate the new O-rings with transmission fluid, and install them on the cover assemblies.
  8. Install a new square-cut seal on each cover assembly, and install the fluid filter elements on the cover assemblies.
  9. Install the filter and cover assemblies into the filter compartment.
  10. Align each cover assembly with the holes in the channel plate sump, and push the cover assemblies in by hand to seat the seals.

    11. Caution: Do not use the bolts to draw the filter covers to the sump. This can damage the covers, seals, or sump.

  11. Install six bolts in each cover, and tighten the bolts 38 to 44 lbf·ft (51 to 61 N·m).
  12. Install a new drain plug O-ring, and install the drain plug. Tighten the drain plug 18 to 24 lbf·ft (25 to 32 N·m).
  13. Fill the transmission with fresh transmission fluid and check the fluid level. See Table.. See Table for lubricant capacities.
  14. Check and adjust the fluid level using the procedures under "Checking the Fluid Level".

    Table 1, Approved Allison Transmission Lubricants *

    TES-295 Approval Number

    Company

    Product Brand Name

    AN-051005

    ExxonMobil Lubricants and Petroleum Specialties Company

    Mobil Delvac Synthetic ATF

    AN-011001

    Castrol Heavy Duty Lubricants

    TranSynd

    AN-031002

    BP

    Autran Syn 295

    AN-031003

    Cognis Corporation

    Emgard 2805

    AN-031004

    International Truck & Engine Company

    Fleetrite Synthetic ATF

    AN-071006

    John Deere & Company

    HD SynTran

      Table 1, Approved Allison Transmission Lubricants *

      * To check the latest Allison approved fluids, go to www.allisontransmission.com/my-allison/customer. Lubricants listed in order of preference. Do not mix types of oil.

      Table 2, Allison Transmission Lubricant Capacities

      Transmission Model

      Fill Capacity:qt (L)*

      2100/2200/2500 Series (standard sump)

      15 (14)

      2100/2200/2500 Series (shallow sump)

      13 (12)

      3000 Series (4 inch sump)

      29 (27)

      3000 Series (2 inch sump)

      26 (25)

        Table 2, Allison Transmission Lubricant Capacities

        *  Quantities listed are approximate. Add the recommended amount of fluid as listed under fill capacity. Do not overfill.

      Note:
      Parent topic: Allison Transmission Fluid and Filter Changing
      Document Number: 0000121221
      Manual Publication Date: 2024-05-24
      Topic Publication Date: 2024-11-13