Yetter 2000 Series Vertical Tillage Tool (V.T.T.) - Manual (Page 18)

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ASSEMBLY INSTRUCTIONS
Step 18.
Install the wing fold stops to the toolbar. Do not fully tighten, will need to be adjusted later.
Hydraulic Hook Up
DANGER:
Inspect and replace worn or frayed hydraulic hose. Keep all connections
tight, escaping hydraulic fluid under pressure can have sufficient force to penetrate the skin
and cause serious personal injury. Fluid escaping from a small hole can be almost invisible. Use a
piece of cardboard or wood rather than hands to search for suspected leaks. Failure to heed may
result in personal injury or death.
The Yetter coulter cart requires two remote hydraulic valves on the tractor for proper operation. Before
operating in the field, perform the following steps.
1. Connect the Yetter VTT to the tractor drawbar before operating the cart hydraulic system. Check
the tractor hydraulic system fluid level. Filling all four cylinders with fluid will require approximately
3-4 gallons. DO NOT operate tractor hydraulics when fluid level is too low.
2. Connect the hoses from the Yetter VTT to the tractor. The hydraulic hoses are provided with the
adapter attached. Use ¾-16” standard thread quick coupler tips.
3. Hold hydraulic lever in extend position for 15 seconds after cylinders are fully extended to purge air
from the system.
4. Recheck tractor fluid level and refill if necessary.
5. Cycle cylinders back and forth a couple of times to see that they operate together. Hold the lever in
the extended position a few seconds after each cycle for additional air purging.