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[Eagle1]

There are a lot of fasteners that are metric thread and imperial hex. Spark plugs are a good example of this mixture of measurement units.

My LS tractor is all metric EXCEPT the oil filter that uses an imperial thread not metric. Go figure.....

 

[RobertN]

I still need both kinds for the stuff I'm working on. Heck, even the Unimogs are part SAE fasteners.

One of the early TBN members restores Unimogs, sells parts etc.

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Years ago, there were great threads about the Unimogs he was working on. And he had a Zamboni for his kids winter ice rink

 

[Engineer42]

Thanks! Never seen that, although I don't think it would help this particular situation.

Ram 1500's have the oil filter mounted above the front axle and 4wd solenoids, in a location almost impossible to reach, and you have to snake the filter out by tipping it one way, then the other. It's mounted vertically, facing up like an over-filled pint glass, so it spills scalding hot oil down your arm as soon as you tilt it.

I've found the easiest way to deal with it is to just drive an awl thru the can, low along one edge, so it spouts the oil out sideways, to where you can catch it in a pan. Terrible design, which could have been resolved for under $100 by installation of a remote filter mount.

2500 Ram with the Cummins is the same way. You access it from the right wheel well, and have to rotate the filter 90 degrees to snake it out between steel lines. The filter will drop down low enough to screw this piece on, then rotate and remove.

 

[BigBlue1]

Not sure if this will work for you, but FYI

Having just purchased a 2022 Ram 3500 with Cummins this part of the discussion caught my eye. But I went to Amazon and I see all the similar products describe themselves as being for 2013-2018 models. Not having change my Cummins oil yet I'm curious... Is that because the filter has been relocated to a better place 2019+? Or does this still apply?

 

[Engineer42]

Having just purchased a 2022 Ram 3500 with Cummins this part of the discussion caught my eye. But I went to Amazon and I see all the similar products describe themselves as being for 2013-2018 models. Not having change my Cummins oil yet I'm curious... Is that because the filter has been relocated to a better place 2019+? Or does this still apply?

I can't say if it's needed for your year. Best I can tell you is to look behind your right front tire, as in the picture above. If you can see the oil filter, I'd say it's a similar situation to remove.

 

[Renze]

There are a lot of fasteners that are metric thread and imperial hex. Spark plugs are a good example of this mixture of measurement units.

I only have metric spark plug sockets in my set...

 

[Too many Kubotas]

Having just purchased a 2022 Ram 3500 with Cummins this part of the discussion caught my eye. But I went to Amazon and I see all the similar products describe themselves as being for 2013-2018 models. Not having change my Cummins oil yet I'm curious... Is that because the filter has been relocated to a better place 2019+? Or does this still apply?

It didn't change. Which makes sense since it's really only the front clip that's different on the '19-up models.

You could go in from the top instead, but I don't like to disturb the air intake stuff so I do it through the wheel well, using one of those caps. Plastic bags supposedly works, too, but I've never tried that method.

 

[RandyT]

I only have metric spark plug sockets in my set...

A few years ago I got curious about when spark plug threads went from imperial to metric. And with a little research found a 1937 JD B that below a certain serial number the spark plug was 7/8 inch and above the serial number was 18 mm.

 

[Renze]

found a 1937 JD B that below a certain serial number the spark plug was 7/8 inch and above the serial number was 18 mm.

7/8" is 22.225mm... i think i have 21 and 16mm spark plug sockets. Yup, looked it up, 16 and 21mm is all we have here.

 

[BnRidge]

I figured out a long time ago that Europe and Asia didn't agree on odd vs even metric wrenches. A lot of wrench sets jump from 17 to 19 but I have 18s on tractors and cars.

So that's why the two metric wrench/socket sets I have are missing 12mm, the size Kioti seems to use a whole lot of.