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  #1  
Old 07-13-2019, 02:11 PM
Rainman4820 Rainman4820 is offline
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Default 1641 Trans and PTO Issues

I had a problem with my carb solenoid and that is fixed. Now I have 2 issues.

When running, my transmission wont shift into forward or reverse. Note that when the engine is shut off it shifts into forward and reverse fine, so I dont think its a linkage issue.

Also, now my PTO starts but as soon as I let off the switch it shuts off. I recall something similar happened a year or so ago, seems like I replaced a relay or solenoid on the PTO but I don't remember the details.

Before I waste everyones time on these issues. Now.....when I start and let my foot off of the brake pedal the engine dies.

Thoughts?
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Old 07-14-2019, 07:50 AM
bugeye bugeye is offline
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If the foot brake is pressed, the transmission linkage is pushed to neutral. So, check the linkage for adjustment or binding.

The PTO operation is interlocked with multiple safety switches. Locations - under seat, brake under the tunnel cover and behind the dash on the transmission control lever. Suggest following a wiring diagram and test each switch if properly functional and the wiring connectors are clean and tight to the switches. Also possible is a broken wire to the multiple switches.
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Old 07-14-2019, 08:23 AM
R Bedell R Bedell is offline
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Quote:
my PTO starts but as soon as I let off the switch it shuts off.
There could be a number of issues that will give you the same condition.

Considering, you replaced the Reverse Relay not that long ago, the next culprit I would suggest is the Seat Switch (Black one). That switch has to close (when you sit on the seat), to keep the Relay energized. Check that out with a VOM or DVM. Check & advise.
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Old 07-14-2019, 08:55 AM
Rainman4820 Rainman4820 is offline
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Default Engine Dies on Brake Release

Thank you...I am going through wiring diagrams and physically checking the wiring for the PTO issue and will let you know what I find. I did check the linkage and no binding at all. When the engine is off, the shift lever seems to move as it should.

Any thoughts on why the engine dies when I release the brake?
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Old 07-14-2019, 09:48 AM
R Bedell R Bedell is offline
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Quote:
Any thoughts on why the engine dies when I release the brake?
That could be either a bad Brake Switch or the other Seat Switch (Gray one).
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Old 07-14-2019, 10:56 AM
Rainman4820 Rainman4820 is offline
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In checking the switches I now realize that if I am NOT depressing the seat switches and release the brake she keeps running. I am going to check the Grey switch as you mentioned but would really like to understand what I am doing.

I assume I can test the Grey switch by jumping the Black/Purple connection on the wiring connection? Seems logical but I just want to double check to make sure I am not messing something else up in the process.
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Old 07-14-2019, 11:32 AM
Rainman4820 Rainman4820 is offline
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Ok cant tell you how much I love electrical issues. I went ahead and jumpered the black/purple and everything seems to be running as it should. Foot off brake engine runs, PTO stays engaged when switched on.....

Problem I have now is that I checked continuity of both of the seat switches and they seem to be fine. I guess they could break down under load but.......What am I missing?
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Old 07-14-2019, 12:20 PM
R Bedell R Bedell is offline
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The Black Switch is Normally Open (NO) and when you sit in the seat, the switch closes.

The Gray Switch is Normally Closed (NC) and when you sit in the seat, the switch opens.
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Old 07-14-2019, 12:26 PM
Rainman4820 Rainman4820 is offline
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Yes sir and the switches seem to be operating as they should. However, now when I sit on the seat the engine dies. Switches are in the right spot and I have verified the correct wiring on the switches. I think the seat switches are good and am now looking at the Brake Switch, which I assume is the Interlock Switch on the diagram.
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Old 07-14-2019, 12:30 PM
R Bedell R Bedell is offline
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Quote:
the switches seem to be operating as they should. However, now when I sit on the seat the engine dies.
Then there is a "short" in Orange or Yellow wire from the Gray Switch.
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