We need to call this the LOCK-IN VALVE because it locks fluid IN the hydraulic cylinder! The original application of the "Rear Lockout Valve" on 316 - 332 John Deere garden tractors aimed to speed up application of pressure to the actuator plugged into the shared hydraulic control circuit.
The snow blower and 54 blade angle are two examples. While the valve works very well in this application, many customers intend the lockout valve to actually "Lock" a heavily loaded three point hitch into position. The valve works okay most times but not always.It doesn't always work because the OEM installation requires the valve be installed on the wrong side of the hydraulic cylinder. The aux-hyd Positive Rear Lockout Valve Kit allows the lockout valve to be installed on the correct side of the hydraulic cylinder. The valve will now hold hydraulic fluid in the cylinder when high down force is applied. As we remember, a liquid cannot be compressed but it can be pulled apart. The item "AuxHyd Positive Rear Lockout Valve for John Deere 318 322 332 Garden Tractor" is in sale since Sunday, July 16, 2017. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Lawnmowers\Parts & Accessories".
The seller is "deerebuck" and is located in Tallahassee, Florida. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Russian federation, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion.