Used Scania 2002705 differential oil filter

[chrismo]

We use these filters on our fleet of Scania trucks, I never thought they did much at all but I was very wrong. This was in use for about 8000KM with a factory fill of unknown gear oil, a much shorter interval than what would be typical for our trucks. As this was the truck's first service I drained the differential oils and was surprised to find them extremely clear so I became curious about these filters and the results speak for themselves. The filter media on an unused filter is pure white so it obviously has caught a lot of crud. This seems to be a very high quality filter but I have absolutely no idea who the manufacturer could be.

One thing I noticed was the bypass valve spring was VERY heavy which is odd considering it appears the filter is fed via splash lubrication.

 

[dnewton3]

The filter itself looks well constructed.

The Wix xref shows a 29 psid for the BP; that is fairly stiff for sure.

I'm completely baffled how a filter can be fed only via splash lubrication; how does that work? It appears to be traditionally mounted; screw threads in the baseplate. The only way I would expect this filter to work properly is some manner of pressure differential causing flow through the media. Am I missing something here? Are there any external lube lines going to/from the diff?; sort of a scavenger pump system that would apply pressure to push the fluid through the filter?

Can you post some pix of how it's mounted on the diff?

 

[53' Stude]

We use these filters on our fleet of Scania trucks, I never thought they did much at all but I was very wrong. This was in use for about 8000KM with a factory fill of unknown gear oil, a much shorter interval than what would be typical for our trucks. As this was the truck's first service I drained the differential oils and was surprised to find them extremely clear so I became curious about these filters and the results speak for themselves. The filter media on an unused filter is pure white so it obviously has caught a lot of crud. This seems to be a very high quality filter but I have absolutely no idea who the manufacturer could be.

One thing I noticed was the bypass valve spring was VERY heavy which is odd considering it appears the filter is fed via splash lubrication.

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Nice filter. I like the wire mesh that’s around pleats. Thank You

 

[chrismo]

Apologies for not returning sooner. Splash lubrication probably isn't the right word, sling lubrication may be more accurate. For a tandem axle setup like on this truck there are two different ways these filters are mounted, the forward axle uses a remote mounted filter which I have less than no idea how it works. The rear most axle has the filter mounted about halfway up the rear of the axle pumpkin and has a funnel to catch oil for the filter and a drain pipe on the bottom which looks like this: https://autoline.info/-/sale/oil-fi...ilter-Casing-Drive-Axle--19110521531880853400

In the attached picture you can see how it is mounted.