844/642 Telehandler HYDRAULICS

STEP 14

Step 16

Shut off the engine. Remove the cap from the counterbalance valve on the lift cylinder and loosen the lock nut (1). Turn the adjusting screw (2) clockwise to decrease the pressure and counterclockwise to increase the pressure.

Start the engine and lower the boom until the lift cylinders are at the end of their stroke. Shut off the engine.

Step 17

NOTE: The pressure will cha nge approximately 100 psi (6.9 bar) for every 1/4 turn of the adjusting screw (2).

Hold the adjusting screw from turning while tightening the jam nut.

Step 15

Repeat Steps 10, 13 and 14 as necessary. If the adjusting screw does not change the pressure, replace the load check valve.

Remove the pressure gauge from the lift cylinder. Install the inlet hose (1) of an in-line flowmeter to the left hose and the outlet hose (2) of the flowmeter to the cylinder LOWER port.

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