Greenhoe Valve Section Maintenance

Our valve sections are designed to last for decades with normal use and maintenance. Listed below are the maintenance instructions to be followed to keep your Greenhoe valve section in like-new operating condition.

Cleaning - The section is lacquered with epoxy lacquer, so is solvent proof. We recommend a dishwashing soap to clean your horn on the outside. Rinsing the section once a month will keep the insides clean. An annual trip to your professional technician to chemically clean the horn is recommended.
Lubrication - We have tested the following and recommend the following lubricants and schedule to maintain the section and keep the warranty in force. Lack of lubrication or damage caused by untested lubricants shall void the warranty. We did extensive research and have found that Hetman products exceed our standards in every way.
Disassembly - The Greenhoe Valve™ should hardly ever require disassembly. Having proper tools is critical to the disassembly and reassembly of our valves. Improper disassembly or assembly of the valves will void the warranty, so if in doubt, have a professional show you how to do it.

Table 1 outlines the lubrication points, approved production and the lube schedule.

Lubrication Point	Approved Product	Scheduled Lubrication
Rotor	Hetman Light Rotor Oil - Lubricant #11	Weekly, or whenever the valve feels tight. Remove the main tuning slide and drip oil down the neckpipe. Alternatively, you can lubricate through the hand slide receiver. Use 5-10 drops of oil and work the valve while dripping into either end.
Rotor Spindle	Hetman Light Bearing Oil - Lubricant #13	Weekly, or whenever valve feels tight. Place ONE drop on the spindle at the spindle bearing. ONE drop under the valve cap on the spindle will lubricate the spindle opposite the stop arm. DO NOT over lubricate as this oil is much thicker than rotor oil and will make the valve seem sluggish if you over-do it!
Minibal®	Hetman Light Bearing Oil - Lubricant #13	Weekly with other oil activities. Also oil if you remove a lever or linkage. Place a drop on the ball bearing and wipe off excess with a paper towel.
Lever Pivot	Hetman Light Bearing Oil - Lubricant #13	Weekly with other oil activities. Also oil if you remove a lever. Place a drop on the pivot on each side and work the lever several times. Wipe off excess with a paper towel.
Tuning Slides	Dow Corning High Vacuum Grease	Monthly or whenever you clean off the old grease. This product does not break down like lanolin, and is resistant to solvents as well.

Table 2 outlines the tools required to remove, adjust or replace all components.

Fastener or Valve Part	Tool Required	Comments
Stop Arm Retaining Screw-Slotted	Common Screwdriver	A jewelers screwdriver works best with an ultra thin blade. Be careful not to use the wrong sized screwdriver.
Stop Arm Retaining Screw - Socket	3/32 Allen Wrench	A ball end wrench is nice here.
Stop Arm Bumper Retaining Screws - Socket	3/32 Allen Wrench	A ball end wrench is nice here.
Minibal Retaining Screw - Socket	M 1.5 Metric Allen Wrench	A ball end wrench is nice here.
Lever Pivot Pin - Socket	3/32 Allen Wrench	A ball end wrench is nice here.
Stop Arm - Removal	Small Rawhide Mallet	Carefully loosen the stop arm retaining screw, and with the valve cap removed, tap the screw to first free up the bearing plate, then to free up the stop arm. Be careful not to unscrew the retaining screw too much or you will bend it.
Bearing Plates, Replacement	Plastic or Wooden Drift, Rawhide Mallet	The drift should have a hole in it to slip over the bearings. A piece of 1/2 inch PVC pipe makes an excellent drift.
Rotor Removal/Replacement	None	The casing is very tight and you can easily damage it with the rotor. Scratched casings due to improper rotor handling are not covered by warranty and you will have to get an oversized rotor to fix the problem. This is expensive and preventable, so be careful!
G Lever Paddle Assembly Setscrews - Socket	1/16 Allen Wrench	A ball end wrench is nice here. These setscrews do not have to be over-tightened, just snug.

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