Massey Ferguson 00.01.47 – Dash: Forward/Reverse Lever Neutral Position Switch Issue
Issue description
The system is detecting a malfunction or implausible signal from the neutral safety switch located on the forward/reverse power shuttle lever, which may cause a 'no crank, no start' condition or transmission engagement failure.
Applies to these machines
50 machines- 7714
- 7715
- 7715S
- 7716
- 7716S
- 7718
- 7718S
- 7719
- 7720
- 7720S
- 7722
- 7722S
- 7724
- 7724S
- 7726
- 7726S
- Tier 4 (2015-2021)
- 5608
- 5609
- 5610
- 5611
- 5612
- 5613
- 5710SL
- 5711SL
- 5712SL
- 5713SL
- 6612
- 6613
- 6614
- 6615
- 6616
- 6712S
- 6713S
- 6714S
- 6715S
- 6716S
- 6717S
- 6718S
- 7614
- 7615
- 7616
- 7618
- 7619
- 7620
- 7622
- 7624
- 7626
- 7714S
- 7719S
Check the cause
Verify that the shuttle lever positively engages into the true neutral position (worn mechanical detents can prevent the switch plunger from fully activating)
Inspect the wiring harness connecting the shuttle switch to the Dash controller for loose pins, corrosion, or wire chafing on the steering column
Disconnect the switch and use a multimeter to test for continuity (should show a definitive change in state when the lever is moved in and out of neutral)
Ensure the switch is receiving proper reference voltage and ground from the Dash module
Repair steps
Disconnect Power
Disconnect the tractor's battery to prevent electrical shorts or accidental starter engagement during the repair.
Access the Switch
Remove the steering column cowlings to access the forward/reverse shuttle lever assembly.
Remove the Faulty Switch
Unplug the electrical connector and unbolt the switch assembly from the column bracket.
Clean the Mounting Area
Thoroughly clean the mounting surface to prevent dirt or debris from causing misalignment.
Install and Adjust
Install the new switch, ensuring the switch plunger aligns precisely with the neutral detent so it only activates when the lever is in true neutral.
Reassemble and Test
Reconnect the wiring harness, reassemble the steering column plastics, reconnect the battery, and test the tractor to ensure it only cranks in neutral and clears the code.
Parts you might need
(2)Forward & Reverse Steering Column Switch (without Park Lock)
3789724M93Alternate OEM References: 3780596M93, 3780596M94, 3789724M91, 3789724M92
Power Shuttle Lever Assembly
3789552M92Dyna 4 specific
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