T273 Glow Plug Timer?

[Bud Soda]

She's dead Jim. . .
View attachment 413202

Removed the cover. . . well more accurately destroyed the cover. I took a picture of the components on an old school bread board and it's pretty obvious that the timer is dead. Measured several resistors that are now open, and at least one cap that's bad too. Even if I was able to replace the components, which I'm not since they're embedded in epoxy, it'd probably cost me more in parts than the replacement at $40. The crappy thing is the part is designed to be sealed, but yet there is a pretty large hole near the blade connector. Oregon moisture (or mouse pee) clearly got inside and corroded the parts.

Bummer. . .
P

Do you have the part # handy in case I ever need one?
Thanks

 

[TYMinColton]

Do you have the part # handy in case I ever need one?
Thanks

Indeed I do. As listed in the TYM parts catalog (PM me if you need a PDF copy):
Timer, Glow Part No: 16626692100 (it's also stamped on the component for convenience)


I did search around for cross-listed alternatives, but couldn't find any. Based on the Korean writing on the part, I'm guessing it's probably a custom part.

Pete

 

[CalG]

As a follow-up: Good news and bad.

First the fuel pump:
Good news: I get 12V at the fuel pump connector.
Bad news: If I direct wire from the + terminal of the batter to the fuel pump, back through a lightbulb tester, and ground the bulb lights, but pump does nothing. Dead short?

Now for the glow plugs:
Good news: If I direct wire from my battery through the glow plug strip my bulb lights.
Good/Bad news: When I removed the strip connecting the plugs, plug #2 was literally broken in half! :dance1:
Good/Bad news: When I direct contact with my light tester plug #2 is also bad, but plug #1 is fine! :dance1::dance1:

To summarize: (1) My fuel pump is either bad, which would be somewhat odd since I can still start the tractor (gravity?), very quiet, or I just don't understand how it works . (2) Two of the three glow plugs are toast. :thumbdown:

I still haven't determined why the timer doesn't seem to be activating, but perhaps it doesn't work if doesn't see the correct load on the glow plug side of the equation.

Thoughts? Comments?
Pete

Just a "gotcha"? You say "through a light bulb tester", That is NOT a dead short, unless I have your set up pictured incorrectly. "Through" implies a series connection. The bulb provides a fixed resistance. I would not expect a 12V pump motor to run if it also needed to light a bulb unless the bulb were 500W or so.

As said, I may have your set up pictured wrong.

 

[TYMinColton]

I referred to it as a dead short as opposed to an open circuit. In otherwords when the pump is in series with the lightbulb it completed the circuit but does not operate. I too thought this might be because I wasn't placing sufficient load, but I've now talked to a couple of mechanics who are convinced that the pump should run with out an external load. guess I'll find out when my new pump arrives.
Make sense? I think we're saying the same thing.
Pete

 

[robstaples]

I referred to it as a dead short as opposed to an open circuit. In otherwords when the pump is in series with the lightbulb it completed the circuit but does not operate. I too thought this might be because I wasn't placing sufficient load, but I've now talked to a couple of mechanics who are convinced that the pump should run with out an external load. guess I'll find out when my new pump arrives.
Make sense? I think we're saying the same thing.
Pete

First... trying to help... In a series circuit, of a light bulb and a pump, if the light is fully lit, the pump is passing current and doing no work. Measure the voltage drop across the pump, I'd expect near zero. It is acting like a wire. All the 12 volt "work" is being used by the light. Test: for a 12 v pump, put direct from the battery 12v on it. Motors usually fail open ( burned up brushes or melted armature wire)

 

[TYMinColton]

Sorry. Didn't mean to sound ungrateful. I'm actually not measuring the voltage drop over the pump but probably could. However, the circuit it wouldn't be complete if the pump died open. I have also direct wired the pump to the battery and it still doesn't run. Not sure what happened but I'm coming to find a lot of electrical components corroded by the oregon rain forest. Bummer.

 

[dayjd1]

Just went through pretty much the same scenario with my 2007 TYM273 .... You're absolutely right they don't start in cold sub zero weather especially if all your glow plugs (3) are bad. I purchased mine in late 2012 with 240 hours on it. Fron the "get go" it was very difficult to start. I hired a tractor mechanic to take a look at it. He got it started but it took a spray if starter fluid to get it up ad running. He changed all the filters, oil, and installed a inline coolant circulator / heater. This helped greatly but still had problems starting on occasion. I ended up removing the glow plugs and testing them with a 12volt jump starter. Two out if the three glow plugs were bad. Ordered new plugs from Keno Tractor in Oregon (I think) from their web site. Three of them shipped was about $70.00. This year (For the last couple months) I have used the 273 for my snow removal needs (Maine winters) but the starting problem had returned. At first I thought it was the fuel gelling / did find some ice in my fuel filter. Changed filter, added Power service and 911. Still would start. Charged and couple times. Still no start so I purchased a new battery charger with a much higher jump start rating. Yep! Still no start. Pulled the air intake filters off and sprayed a small amount of starting fluid with upper chamber lubricant and it starts right up. Now I'm thinking maybe all it needs is to run for a while and maybe my problem is over? Nope! It started warm but once the engine cooled it would not start. This time I found the inline heater I had install a couple years earlier wasn't working. So for a month I resulted to pulling off the air filter and using starting fluid which was a pain in the butt also very uncomfortable using staring fluid with the glow plugs. I was beginning to think my fuel pump may of been the culprit but it ran great once it started. I haven't been on this forum for nearly two years so I came on searching for the glow plug number. From the search I found a thread that mentioned jump starting the engine with a charger higher than 12 volts could burn out the glow plugs .....! Went out and pulled my glow plugs and all three were dead. Must say I had could not find them anywhere based on the old mitsubishi glow plug number but a local Mahindra dealer (To his surprise) was able to cross reference it to a Mahindra glow plug .... 32A66-03102 but had to pay about $35.00 a piece for them. Turns out that price wasn't that bad from a internet search but Keno Tractor was the best price I could find at $30.00 each. The 273 is now starting beautifully ... I hope. 15 below last night so we'll see soon but it started great last night! :>)

 

[Bud Soda]

Just went through pretty much the same scenario with my 2007 TYM273 .... You're absolutely right they don't start in cold sub zero weather especially if all your glow plugs (3) are bad. I purchased mine in late 2012 with 240 hours on it. Fron the "get go" it was very difficult to start. I hired a tractor mechanic to take a look at it. He got it started but it took a spray if starter fluid to get it up ad running. He changed all the filters, oil, and installed a inline coolant circulator / heater. This helped greatly but still had problems starting on occasion. I ended up removing the glow plugs and testing them with a 12volt jump starter. Two out if the three glow plugs were bad. Ordered new plugs from Keno Tractor in Oregon (I think) from their web site. Three of them shipped was about $70.00. This year (For the last couple months) I have used the 273 for my snow removal needs (Maine winters) but the starting problem had returned. At first I thought it was the fuel gelling / did find some ice in my fuel filter. Changed filter, added Power service and 911. Still would start. Charged and couple times. Still no start so I purchased a new battery charger with a much higher jump start rating. Yep! Still no start. Pulled the air intake filters off and sprayed a small amount of starting fluid with upper chamber lubricant and it starts right up. Now I'm thinking maybe all it needs is to run for a while and maybe my problem is over? Nope! It started warm but once the engine cooled it would not start. This time I found the inline heater I had install a couple years earlier wasn't working. So for a month I resulted to pulling off the air filter and using starting fluid which was a pain in the butt also very uncomfortable using staring fluid with the glow plugs. I was beginning to think my fuel pump may of been the culprit but it ran great once it started. I haven't been on this forum for nearly two years so I came on searching for the glow plug number. From the search I found a thread that mentioned jump starting the engine with a charger higher than 12 volts could burn out the glow plugs .....! Went out and pulled my glow plugs and all three were dead. Must say I had could not find them anywhere based on the old mitsubishi glow plug number but a local Mahindra dealer (To his surprise) was able to cross reference it to a Mahindra glow plug .... 32A66-03102 but had to pay about $35.00 a piece for them. Turns out that price wasn't that bad from a internet search but Keno Tractor was the best price I could find at $30.00 each. The 273 is now starting beautifully ... I hope. 15 below last night so we'll see soon but it started great last night! :>)

I have not had to change mine but this seems to be a cross> Amazon.com: NGK (6528) Y114T Glow Plug, Pack of 1: Automotive

 

[dayjd1]

Excellent info on the 273 glow plugs plus unbeatable price! Thank you!

 

[TYMinColton]

Yup. bud's got it right. I ended up ordering 3 Y114T glowplugs. I haven't had a chance to install them, but they're nearly identical. Huge savings over OEM.