Massey Ferguson 00.1.73 – Dash Module: Dash Module Has Noted An Issue With The Transmission Lubrication Pressure (Dash)

The system has detected a transmission lubrication pressure fault, which is monitored by the transmission lubrication pressure switch (X493).

• 4707
• 4708
• 4709
• 4710
• T4 (2015-2021)
• 5600 Series
• 5700SL Series
• 7600 Series
• 7700 Series

1. 1

   Check for RPM Correlation: Observe if the error code triggers when accelerating, increasing throttle, or moving, but disappears when the tractor is stationary and idling.

2. 2

   Inspect Hydraulic Filters: Check the transmission hydraulic filter and the hydraulic suction strainer/screen first, as a restriction here will starve the transmission of lubrication pressure.

3. 3

   Check the Sensor Circuit: Inspect the wiring and connector for the transmission lubrication pressure switch (X493) for damage, corrosion, or a short.

4. 4

   Check Fluid Levels: Ensure the transmission/hydraulic fluid is at the correct level and is the recommended specification (Massey Ferguson Permatran 821XL Semi-Synthetic).

1. 1

   Fluid & Filter Service

   Begin by draining the transmission fluid (if required for screen access) or isolating the filter housings.

2. 2

   Replace the Hydraulic Filter

   Remove the old transmission hydraulic filter and install a new OEM filter.

3. 3

   Replace/Clean the Hydraulic Strainer

   Locate the hydraulic filter screen/cartridge strainer. Remove it and inspect for heavy metal shavings or debris. Replace it with a new screen.

4. 4

   Refill Fluid

   Top off the transmission with Massey Ferguson Permatran 821XL Semi-Synthetic fluid to the proper capacity.

5. 5

   Test the Sensor

   If the code persists after a filter and fluid service, use a multimeter to test the X493 Lubrication Switch. If the switch is failing to close/open at the specified pressure, replace the switch.

6. 6

   Clear and Verify

   Clear the fault codes from the Dash module. Run the tractor through various RPM ranges and drive it to confirm the code does not return.