Locking Up Fertilizer and Seed Rockshafts

N39645
N39645-UN-06OCT88

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.

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.

  • A43336
    A43336-UN-22MAR99

    Valve Shown in Open Position

    A67456
    A67456-UN-20MAY10

    A - Hydraulic Lock-Up Valve

    B - Cap Screw

    Hydraulic Lock-Up Valve:

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

  • Mechanical Lock-Up:

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

OUO6435,0001FC7-19-20100520