Yep - 100%. Will do that today and just checking that I get this right before going further - done some research and looks like when I pull the pan from the 904 transmission, I should be looking at:
Fluid condition - presuming red is good, but brown/black or burnt smell is a bad sign (will this be the case even in an older transmission that hasn't been opened/used for a while)
Debris in the pan - bit of sludge is normal, but if there is shiny metal or lots of clutch dust that could mean internal wear
Valve body - check bolts, look for buildup or anything gummed up
Bands and servos - guess I can test some of the band movement with a screwdriver?
Manual valve - I should move the shift linkage and make sure the manual valve moves freely - is this something I can do without anything connected to it?
If needed, I looks like I can drop the valve body to inspect further - is that straightforward?
Does that sound correct to you? Feel free to let me know if I’m missing anything important - any red flags I should be looking for?