Parker Hannifin Parker Hannifin Booster Regulator VBA43A-N04GN-Z VBA43A-N04GN-Z

Necessary items: Socket wrench, Nominal 19 (2pcs), Looseness preventive adhesive (Loctite 243, etc.)

Check air pressure is exhausted from the IN and OUT sides

Loosen the hexagon nuts and spring washers with the socket wrench, and remove three tie rods

Take off the side covers at the right and left

Remove the cylinder tubes at the right and left sides

Loosen the piston nut with the socket wrench and remove the piston

Check any part does not have abrasion, deterioration and deformation. If it has, replace it with new one

Wipe off stain from the part whose motion is not smooth, and apply grease

Move onto maintenance of the body

Necessary tools: Phillips driver, Pincettes, Turbine oil (Turbine oil 32 class 2, Exxon Mobile or like that)

Remove six cross recessed flat head screws at the right and left sides with the Phillips driver.

Take off the side plates at the right and left.

Take out the check valve seat assembly and through from the body.

Take out the switch valves and though from the body.

Take out the rod seal 5 from the body with the pincettes.

Check any part does not have abrasion, deterioration and deformation. If it has, replace it with new one.

Necessary tools: Phillips driver, Radio pliers

Check air pressure is exhausted from the IN and OUT sides

Rotate the handle counterclockwise back to the end (one direction)

Remove four cross recessed round head screws with the Phillips driver

Remove the bonnet assemblies, pressure adjusting screw, pressure adjusting spring, O-ring, governor spacer, and regulating piston assembly

Pull out the governor valve seat assembly with the radio pliers

Check any part does not have abrasion, deterioration and deformation. If it has, replace it with new one

Wipe off stain from the part whose motion is not smooth, and apply grease

Mount the governor valve seat assembly with minding the mounting direction of the body