Quick drain oil fitting for a 790

   / Quick drain oil fitting for a 790 #1  

gordon21

Veteran Member
Joined
Feb 17, 2006
Messages
1,016
Location
Lake Lure NC
Tractor
JD 790
Does anyone have any experience using a quick drain fitting on a 790? I am looking for the kind where you typically push in and twist 1/2 turn and the oil then flows out. The end will probably have a ridged nipple to temporarily attach a piece of 1/2" ID clear tubing. When finished, twist and lock it back. Oil changes can be done quickly without tools and without a big mess. Since the tractor is metric, who would have these fittings?
 
   / Quick drain oil fitting for a 790 #2  
Look at that type of fitting used on the Deere 400 series and X series gas engines used for several years now. See if they might have the same thread size as you are looking for. I'd try something with more turns to open than 1/2, just for fear that it could get bumped with a stick or something and dump the oil without you knowing it. The garden tractor takes a couple turns to open it.
 
   / Quick drain oil fitting for a 790 #4  
I thought about installing one of those valves at one time. Then I decided that I would break it off in short order. /forums/images/graemlins/crazy.gif
 
   / Quick drain oil fitting for a 790 #5  
I use to crawl under the tractor, car, or grasshopper to drain
the oil. Never again!

I use one of the fluid extractor to "pull" the oil/fluid up via
a vacuum (suction) created by the hand pump (or air compressor).
Essentially, you remove the dipstick and insert a tube/hose down
the dipstick tube and the vacuum does the rest.

There are a variety of brands out there - Pela, comes to mind.

The guys on the 'tdi' forum put me onto them. My cousin works
in a Mercedes dealership and this is their SOP for changing oil/fluids.

ONLY problem is finding one that will hold the 5-7 gallons of hydraulic
fluid. So, I pull out what the container will hold; dump it into the
ones that go to the recycler; and continue until done.

Somewhat related: Greg at Lubrication Specialist is one really
nice guy and a fellow VW TDI owner. Oh yes, TDI stands
for Turbo-charged Direct Injection (as in DIESEL). He is also,
a superb TDI mechanic.

Good luck.

Lon
 

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