John Deere 521926.07 – Direct Drive Range Module (RPM): Range C Gear Has Not Been Engaged After Several Attempts By The Module

When the controller attempts to shift into Range C and fails multiple times, it locks out the gear to prevent mechanical damage. The underlying cause is often electrical, such as the Range C Solenoid Current Too Low.

• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 6115M through 6170M

1. 1

   Restart the tractor to reset the RPM module and attempt to select the gear again

2. 2

   Use a multimeter to check the resistance and voltage at the Range C shift solenoid for open circuits, frayed wiring, or poor pin connections

3. 3

   Verify the RPM module is not overheating and that the transmission fluid is at the correct level and operating temperature

4. 4

   Inspect the electromagnetic actuators and the Range C/D shift cables for binding or mechanical failure

1. 1

   Drain transmission fluid

   Drain the transmission fluid using leakproof containers.

2. 2

   Remove shift cover

   Remove the transmission shift cover to access the Direct Drive Clutch Assembly.

3. 3

   Disassemble clutch drum

   Disassemble the clutch drum assembly to access the range gears.

4. 4

   Inspect components

   Inspect the Range C gear, sleeve, and thrust washer for excessive wear or damage.

5. 5

   Heat bearing cone

   If replacing the bearings, use a bearing heater to heat the new taper roller bearing cone. CAUTION: Do not exceed 150°C (300°F) and plan a safe handling procedure to avoid burns.

6. 6

   Install bearing cone

   Install the new taper roller bearing cone.

7. 7

   Install Range C gear

   Install the Range C gear along with its sleeve and thrust washer.

8. 8

   Reassemble and refill

   Reassemble the Direct Drive Clutch Assembly, reinstall the shift cover, and refill the transmission with John Deere approved hydraulic/transmission fluid.