JD400 hoe/loader weird hydraulic set-up?

[JD400 ind]

G'day all, I'm hoping some knowledgeable john deere aficionado can help me out with JD400 hydraulic plumbing.......
I recently bought a JD400 (haven't even got her home yet) and she has some hydraulics issues. (previously posted to hydraulics forum)

While reading previous posts on this site regarding the trans filter and sludge screen people were saying that the sludge screen hides behind a horizontal plug near the trans filter. After a 160km trip today in 35 degree heat to where my 'hoe currently resides i was going to clean the sludge screen....... there is no horizontal plug near the trans filter but there is a horizontal fitting right at the base of the trans with a short hose connected to it that leads to a horizontally mounted canister filter?? (I'm assuming that the trans filter is the one mounted vertically off the bottom of the trans)

Is this a "home made" set-up or did some models come from the factory like this? The data plate reads; model JD400; code (?) JD400T; serial number is 168676 (then painted) L.

Any help would be greatly appreciated.

 

[Tx Jim]

According to the parts catalog # 973 the screen part # AR26375 is held in behind this plug with a 1/2" sq hole in the head.
Part Number: R40147
Part Price: 15.39 USD
On Hand: 1 Check Other Stores
Description: PLUG
Specification
Weight 0.29 LBS 0.13 Kg
Thread Size 1.500 IN
TPI (Threads Per Inch) 16
Thread Length 0.570 IN
Length 0.750 IN
Square Size 0.500 IN
Diameter 1.790 IN
Material 11L17

 

[JD400 ind]

OK, as it turns out that is the normal set-up hydraulic filter live ther. Got the machine home today and blew a hose within 2 minutes of getting her off the truck!! :laughing: