Glow plug upgrade..Solenoid problems?

[inboardnut]

Hey guys, I did the glow plug upgrade to my 1772 Cub in October of 2012.

I have been having problems with the solenoid NAPA # 7-01861-1
(also has Trombetta 852-1221-210-50 marked on it)

I replaced the original October 2012 solenoid in November of 2015. The 2015 replacement solenoid just went bad in August and got another replacement.

Nowwwww. less than a month on the tractor, this replacement solenoid is bad!!

I'm looking into the 4th NAPA solenoid since the upgrade of 10-12. Has anyone else had this issue? Anyone recommend a better solenoid?...OR..... what the heck is making these go bad?

[R Bedell]

Can you specifically state the reason of, or for the failures......???

[inboardnut]

Originally Posted by R Bedell

Can you specifically state the reason of, or for the failures......???

First one had low voltage issues.. 4 to 5 volts on out terminal.. The others, this one included is completely dead on the glow plug side terminal.

I'm thinking of upgrading to a starter solenoid.

[R Bedell]

I went to the Trombetta Website site. The only "red flag" I saw was that this solenoid is to be only energized for a maximum of "20 seconds", according to their specifications.

Seems the Contact Rating is sufficient to handle 3 glow plugs.

So, unless you are holding it in for longer than 20 seconds, the only other issue would be the 12VDC needed to energize the coil, 8.5VDC is dead minimum.

[Oak]

Where do you have it mounted? If it is on the engine it is probably shaking them to death.

[inboardnut]

Originally Posted by R Bedell

I went to the Trombetta Website site. The only "red flag" I saw was that this solenoid is to be only energized for a maximum of "20 seconds", according to their specifications.

Seems the Contact Rating is sufficient to handle 3 glow plugs.

So, unless you are holding it in for longer than 20 seconds, the only other issue would be the 12VDC needed to energize the coil, 8.5VDC is dead minimum.

maybe when its cooler I cycle it a couple of times, but this time of year only need to go thru one cycle of the glow plug timer. I'm guessing that is around 10 seconds. I dont think it has been started 5 or 6 times with this solenoid....

[inboardnut]

Originally Posted by Oak

Where do you have it mounted? If it is on the engine it is probably shaking them to death.

hmmmm, ....that is something to think about. I think the plate it is mounted on is above the water pump towards front of engine.

Might be an issue on first ones, but not sure about the one I put on in the end of August that had only been used a few times?

Either way, might be worth re-locating?

[R Bedell]

Where do you have it mounted? If it is on the engine it is probably shaking them to death.

Good point. The solenoid should be mounted on the "pedestal" or steering tower, away from heat and vibration.

[gt383mag]

mine has been ont the big fan bracket on front of engine been there a few years no issues but it is a ford starter soleniod... i figure if it will stand up to the amount of use it has to put up with in a ford it will last forever in this application lmao

[j knight]

look for a good glow plug relay to start with.
It can be wired in just like the starter relay;
and it was made to work for a longer duration than the starter relay
Made for a heavier load also.