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 leakage, kinking, cuts, cracks, abrasion, blisters, corrosion, exposed wire braid or any other signs of wear or damage prior to working under a raised implement.

Worn or damaged hose assemblies can fail during use and should be replaced immediately. Failure to do so may result in serious injury or death

• Hydraulic Lock-Up Valve:

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

Valve Shown in Open Position


A-Hydraulic Lock-Up Valve

OUO6030,00003C6 -19-30MAR04-1/2

• Mechanical Lock-Up:

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

A-Cap Screw

OUO6030,00003C6 -19-30MAR04-2/2