Checking with the Sight Glass

49X mm 26.04.003

If the transmission is equipped with a sight glass, check the fluid level as follows:

  1. Clean the oil level sight glass. See Fig..

    1. Drain Plug

    2. Fill Plug

    3. Sight Glass

    Fig. 1, Eaton Fuller Transmission With a Sight Glass

  2. Check the fluid level in the sight glass. When the fluid level is at or above 3/4 of the sight glass, then it is at or above the minimum fill level. See Fig..

    1. Full

    2. Low

    Fig. 2, Transmission Fluid Level Sight Glass

  3. If the fluid level is low, check the transmission for leaks, and correct as needed.
  4. If needed, add the recommended fluid, until it is at or above 3/4 of the sight glass. See Table. for approved transmission lubricants.

    Table 1, Approved Manual Transmission Lubricants

    Approved Manual Transmission Lubricants
    Transmission Model Lubricant Type

    1

    		 Temp. Range SAE Viscosity

    All Eaton Fuller

    MobilTrans SHC 50 (RN 2952 E-5)

    All

    50W

    Synthetic transmission lubricant approved by Eaton

    All

    50W
    1. *Do not mix types or brands of fluid. Multi-weight and extreme-pressure gear fluids are not recommended.

    Table 1, Approved Manual Transmission Lubricants

Note:
Parent topic: Eaton Fuller Transmission Fluid Level Inspection
Document Number: 0000118359
Manual Publication Date: 2024-05-16
Topic Publication Date: 2024-10-31