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What is this? Unidentified part on John Deere 490E excavator

joelx777

joelx777

Well-Known Member
Joined
Apr 1, 2022
Messages
163
Location
Washington State
I just put in my new alternator and could not figure out what this thing is. The A is the alternator in the O Is the oil filter. But I can't figure out what it is that the red arrows point to. It looks like a black tube about 4 in in diameter placed vertically and it has a black and a red wire going into it. There's also a little nozzle with nothing screwed onto it. Does anyone know?

https://photos.app.goo.gl/HFypSvQZhwuvU3k87
 
joelx777

joelx777

Well-Known Member
Joined
Apr 1, 2022
Messages
163
Location
Washington State
willie59

willie59

Administrator
Joined
Dec 21, 2008
Messages
13,388
Location
Knoxville TN
Occupation
Service Manager
Could be a cold weather starting aid option if the engine doesn't have a grid heater or glow plugs.
 
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