Neutral Safety Switch

[solakian]

I have a Hindustan tractor that needs a Neutral Safety Switch. This tractor was never "officially" imported into the U.S. and there are no dealers.

The neutral safety switch has a 3/4-14 thread, the threaded portion is slightly under 1/2" from the shoulder to the tip, and a ball extends beyond the threaded portion to ride on the shift rail. The switch is normally open (ball extended), and I can adapt almost any type of connector.

Can someone help me identify a swith that will work for my tractor?

 

[RickB]

I have a Hindustan tractor that needs a Neutral Safety Switch. This tractor was never "officially" imported into the U.S. and there are no dealers.

The neutral safety switch has a 3/4-14 thread, the threaded portion is slightly under 1/2" from the shoulder to the tip, and a ball extends beyond the threaded portion to ride on the shift rail. The switch is normally open (ball extended), and I can adapt almost any type of connector.

Can someone help me identify a swith that will work for my tractor?

I can't help you match a switch, but if you can't find a match for the transmission, you can build a mount and mount any two pole NO ball switch for the clutch pedal to close when the pedal is depressed.

 

[J.Walker]

Just replaced a safety switch on my Kubota. Check-out a dealer they may have a replacement switch that will work for you.

 

[RoyJackson]

3/4-14 is not a standard thread size. I suggest this may be a 3/4-16 thread or a metric size.Since it's an Indian tractor, I'd lean toward the metric thread (probably an 18 or 20 mm. both 18 and 20 mm are standard metric thread sizes).
Don't force a fitting into a threaded hole. You'll strip the threads.

I'd try a Mahindra dealer. That's an Indian built tractor, so they may have the parts you need.

 

[tommu56]

Check out a Chevy truck with a Muncie 4 speed sounds like the reverse switch

or the ford 3000 my neighbor had had one similar on top of transmission housing


napa has a picturial catalog of their switches try them too

tommu

 

[Willl]

Check out John Deere part # CH13415

(no idea what thread size it is)

 

[Iplayfarmer]

What's wrong with the switch you have? Can it be rebuilt or cleaned up to make it work.

I've had to fab a number of parts when the replacement is unavailable or impractical.

 

[JerryG]

The neutral safety switch on a 100 series Massey is about that size and worked the same. Check one out for a MF 135 to see if it works.

 

[solakian]

the switch I have was wired into the high current side of the starter circuit. It is a sealed unit but I suspect the contacts have arced one time to many.

 

[tommu56]

the ford tractor ones were like that a push button on top of the transmission
I think it grounded out to to work the starter

tommu

 

[Willl]

the switch I have was wired into the high current side of the starter circuit.

Well, that's just wrong. And stupid too.

 

[solakian]

Thanks to all for your suggestions. I erred in the original post, the thread was a 3/4-16 (not a 3/4-14 as I stated). The suggestion made, that a Massey Furgeson 135 had a similar switch was right on. In my travels, I drove by a Massey dealer. I pulled in, had them look up the switch, they had it in stock, and it was just what I needed. The terminals were made for bullet not spade connectors, but that was a minor problem easily overcome.

 

[KubotaSam]

When you say the high current side of the starter circuit do you mean the large diameter wire that comes from the battery? If so that is wild to switch that amount of current. Very poor design when you can switch the low amp circuit to the solenoid.

 

[Eliebig]

My Massey ferguson 1440 Neutral Safety switch is acting up too. Does anyone have schematics or sound advice on getting access to it to fix or replace? I am snowed in and can't get it to a dealer so I need to be "creative"

 

[RickB]

My Massey ferguson 1440 Neutral Safety switch is acting up too. Does anyone have schematics or sound advice on getting access to it to fix or replace? I am snowed in and can't get it to a dealer so I need to be "creative"

MF parts catalogs are online for free, sign in as a guest.

AGCO Parts Books

 

[flusher]

If it's like the switch on my MF135 diesel, just jumper it until you can get a replacement. Be sure the tranny's in neutral before you start the engine.

Good luck