Massey 135 diesel fuel sender, 6" tank

[JTXN]

I've been slowly fixing up my new to me old 135. It has no serial number plate but i was told it's late 60s.

I tested the fuel gauge by removing the single wire to the sender and grounding that post. To my surprise the needle went to full. I thought maybe a bad wire so I removed the wire from the sender and tested again, and the needle moved. Ok sender must be bad.

So I look on agco parts books. The part listed for diesel is available on the internet aftermarket BUT it says it's not usable for 6" tanks.

Yesterday's tractor has ones thats listed for continental gas but i cant narrow down which one is 30-200ohms which is what it says in the gauge.

So, has anyone successfully replaced the fuel sender in a 135 diesel with an aftermarket sender in a 6" tank? I measured from the outside edge in the corner with a tape measure. I am planning on calling agco dealer Monday, i am not sure if it is still available.

It's not a huge deal but it would help with my OCD to have all my gauges working.

 

[mllud]

I've been slowly fixing up my new to me old 135. It has no serial number plate but i was told it's late 60s.

I tested the fuel gauge by removing the single wire to the sender and grounding that post. To my surprise the needle went to full. I thought maybe a bad wire so I removed the wire from the sender and tested again, and the needle moved. Ok sender must be bad.

So I look on agco parts books. The part listed for diesel is available on the internet aftermarket BUT it says it's not usable for 6" tanks.

Yesterday's tractor has ones thats listed for continental gas but i cant narrow down which one is 30-200ohms which is what it says in the gauge.

So, has anyone successfully replaced the fuel sender in a 135 diesel with an aftermarket sender in a 6" tank? I measured from the outside edge in the corner with a tape measure. I am planning on calling agco dealer Monday, i am not sure if it is still available.

It's not a huge deal but it would help with my OCD to have all my gauges working.

The sender on mine wasn't working. There is a thin copper wire wound around a plate and a contact that slides up and down and changes resistance to the gauge.
I cleaned the contact and very lightly cleaned the coil of copper wire with 600 sandpaper to get copper exposed where the contact slides. It works as long as the wire isn't broke. The contact gets tarnished from sitting.

 

[JTXN]

Here's a picture. No wires to be found. Only indentifer i have found is it has 5 screw holes. Nobody mentions the ohms when they are selling.

Found another leak at the fuel shutoff valve. Bunch of different parts for various iterations of the 135, and since i have no serial number I'll have to guess.

 

[JTXN]

Found the serial number tag behind the air cleaner. Starts with SDM which I have read on this forum is not a US serial number. The tag also says united states on it. Cast date on the oil pan is 64.

 

[Roadworthy]

According to Tractor Data that tractor was produced in Detroit, Michigan from 1964 to 1975. They don't show the serial number tag being behind the air cleaner which may be why yours does not have a US serial number. Check this out: TractorData.com Massey Ferguson 135 tractor information

 

[JTXN]

Called the agco dealer. Correct part number is 506273M1. It is listed as a part for 150s and 165s but it is adjustable from 4.5" to 12" i think he said.

Had to order it, super expensive. No aftermarket available that I could find.

 

[JTXN]

I picked up the new sender from the agco dealer and tested it with my volt meter. It is the correct range of 30-200 ohms. It has a really long float that can be trimmed down. Not sure why this would be listed for a 150 or 165 and not a 135. Maybe because the smaller 135 tanks were only around for a short time.

 

[JTXN]

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