Lock-Up Rockshafts and Openers

CAUTION: Hydraulic failure can allow openers to fall rapidly, causing injury or death. To avoid hazard, always lock openers in raised position before adjusting, lubricating or servicing machine.

IMPORTANT: Hydraulic hoses between the lift cylinders and hydraulic lock-up valves should be inspected frequently for wear or damage. Contact your John Deere dealer for replacement hoses.

Hydraulic Lock-Up Valve:

Fully retract rockshaft/opener cylinders and close hydraulic lock-up valve (A).

A-Hydraulic Lock-Up Valve

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Mechanical Lock-Up:

If positive mechanical lock-up is needed, use cap screw (A) and nut to lock each rockshaft cylinder.

A-Cap Screw

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