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Hi All

I have a EFM stoker model 350 on a EFM 7000 furnace. I need to add oil to the ratchet oil reservoir. Can someone advise what oil to use? The information that came with the furnace said extra heavy gear oil 600W. Also how full does the reservoir need to be?

Thank You
Bernie

I use 75/140 gear oil and it keeps the ratchet very quiet. 90 wt is also a option. Check the “coal boiler topics” at the top of this forum. There is a lot of good Efm info. Scott.

Just saw your second question. Just enough oil to cover the teeth. Scott

Nearly any automotive gear oil will do fine in the ratchet drive pan. 85w-140 is readily available, cheap, and will keep it quiet. I fill the pan up to about 1/4” from the top.

I made a video on the s20 stoker, not the same as yours but a lot of the same info applies.

I thought this link was very helpful.
How often should the gearbox oil be changed out ?

ben wrote: ↑

Tue. May. 23, 2023 7:14 am

I thought this link was very helpful.
How often should the gearbox oil be changed out ?

EFM doesn't provide a recommendation on that, and I would guess that a lot of people never change it at all. The most benefit comes from the first oil change, which removes the break-in metal. 2500 hours is a common service internal for industrial gearboxes, so that is roughly what I have been following by changing the oil every 3 years.

I threw some Amsoil Severe Gear 75w-110 in the gearbox. I should've done the same for the ratchet pan - not sure why I didn't. I think I just grabbed whatever was nearby, and that happened to be Amsoil Small Engine Oil in 10w-30 - not exactly quiet, but was my first season running the unit and didn't know what to expect sound-wise, not that sound is of any concern here one way or the other.

But, I figure, a quieter ratchet is a longer lasting ratchet - less noise = less wear in my mind.

Mine has 30 weight in the tray, due for a change too.