Hyster Forklift RS46-41LS CH

Position the load holding valve on the derricking cylinder

Install the four capscrews that fasten the load holding valve onto the derricking cylinder

Remove caps and connect the hydraulic lines to the load holding valve according to the identification tags made during removal

Connect the electrical wires to the load holding valve according to the identification tags made during removal

Do not try to locate hydraulic leaks by putting hands on pressurized hydraulic components. Hydraulic oil can be injected into the body by pressure.

Never start the engine with closed shutoff valves. Open the shutoff valves before starting the engine to prevent damage to hydraulic components.

Start the engine and operate the hydraulic system

Check that functions of the load holding valve work correctly

Lower lift cylinders completely

Connect a 0 to 7 MPa (0 to 1015 psi) gauge to check port MPLT

Engine and Oil Temperature Check

Run engine until temperature of hydraulic oil is 55 to 65 C (130 to 150 F)

Is the pressure 5 MPa (725 psi)?

Ensure the area is clean and protected against dirt and fluid contamination.

Is the boom completely lowered?

Are the shutoff valves at the bottom of the hydraulic tank platform closed?

Move all control levers back and forth a minimum of 20 times to remove all hydraulic pressure from pilot system.

Place the truck on a solid and level surface.

!WARNING: Lower boom completely before working on control valve or hydraulic system. The boom can lower suddenly and cause injury if the boom is not lowered. This procedure will make sure that the boom cannot lower suddenly and cause injury or death.

Place the truck on a solid and level surface.

Lower boom and close the shutoff valves at the bottom of the hydraulic tank platform.

Remove covers on the topside of the frame.

NOTE: The pump assembly has two suction hoses and two high-pressure lines.

NOTE: When disconnecting the suction hose at the variable displacement pump, raise hose quickly and install a plug to avoid leakage from the hose.

Lower boom completely and close shutoff valves on the bottom of the hydraulic tank.

Shut down the engine and apply the parking brake.

Apply brakes minimum 10 times to relieve hydraulic pressure.

Loosen the brake filter by using a wrench to turn the bowl counterclockwise.

Install the bowl by turning the bowl clockwise.