Glow plug replacement B7100

[Weimar]

Kubota won’t start since it got down to below freezing

I assume it’s the glow plug, it’s always had a bit of trouble starting, it’s from 1980…

 

[Hugo Habicht]

Kubota won’t start since it got down to below freezing

I assume it’s the glow plug, it’s always had a bit of trouble starting, it’s from 1980…

View attachment 167768

Quote from a movie: "Assumptions are the mother of all f***ups".

Check them first instead of throwing parts (and associated money) at your tractor. Disconnect the wires, take an ampmeter (10-20A range) and connect one at a time to the battery plus. See here: G1900 glow plug check

Also check if voltage is applied to them when you pre-glow.

Poor compression could be another reason for not starting when very cold. But first things first, check the glow plugs.

 

[North Idaho Wolfman]

Kubota won’t start since it got down to below freezing

I assume it’s the glow plug, it’s always had a bit of trouble starting, it’s from 1980…

View attachment 167768

Do you have a meter?
Disconnect the wire and buss bar and, check Ohms of the plugs.
You can get plugs for it at NAPA or other Auto parts dealers.
Most of the Kubota dealers up here don't stock the glow plugs for it.

 

[Runs With Scissors]

I agree with @Hugo Habicht and @North Idaho Wolfman .

Firing off the “Parts Cannon” can be tempting, but also expensive. ( BTDT )

 

[85Hokie]

Believe it or not - point an infrared digital thermometer at each glow plug WHILE turning the key to glow - you will actually see the temp rise if working well.

I have had 3 B7100s - I had to glow the living sh.... stuff out of them to fire and not smoke. The longer I glowed ........10 seconds in summer, the better it kicked off.

If you measure the resistance with a good meter - you should get about 1 ohm, very, very little resistance at all.

 

[Runs With Scissors]

Believe it or not - point an infrared digital thermometer at each glow plug WHILE turning the key to glow - you will actually see the temp rise if working well.

Thats a fantastic idea!!!!

Thanks for sharing……..