Air filter for Cab on 4340?

[cook37184]

Hi y'all...I bought a used 4340 (with cab and A/C). After working with it for a few hours on Saturday, i had water dripping from the Air conditioner vents. I'm wondering if there isn't an air filter somewhere that needs cleaning. I'll be glad when the manuals get here, there's so much to learn. I've picked up a lot of info already from the fine people who post on here.I've figured out all of the levers except for one. To the right of the drivers seat, just below the 3 point hitch control levers, there is a paddle-shaped lever that looks like it rotates to the left or right. What does it control? Thanks in advance.....
Greg
Watertown, TN

 

[4wd]

I think that lever will be to slow down the oil supply through the hydraulics.
Usually have it on MAx which willbe to the right I think.
Sometimes if you have a heavy implement on like a plough it's useful to be able to slow the rate it drops.

 

[cook37184]

Thanks...today I noticed the little sticker just above it (the one with a red triangle pointing left), so I kinda thought that's what it does. The implement I had on today was a box scraper, only 500 pounds, so it didn't show a lot of difference. Also had a devil of a time bleeding the clutch by myself, but noticed an access hole with a rubber plug just under the clutch pedal. Pried the plug out, ran a cord from the pedal, through the hole, over the bend in the exhaust manifold, then back under the tractor. This allowed me to actuate the clutch from underneath while bleeding the air from the system. If only bleeding the brakes would be this easy...

still wondering about a filter for the A/C...also, where do you check/add the hydraulic fluid?