844/642 Telehandler HYDRAULICS

Step 37

Tilt Cylinder Counterbalance Valve Direct Test

Step 39

Start the engine and run at 1000 RPM. Tilt the attachment mount up until the tilt cylinder reaches the end of its stroke and hold the joystick in the TILT UP position. The pressure gauge should read 3000 psi (207 bar).

If the pressure is less than 3000 psi (207 bar) go to Step 30 of the Tilt Cylinder Direct Test.

If the pressure is 3000 psi (207 bar), proceed to the next step.

Step 38

Watch the pressure gauge as the attachment mount is slowly tilted down. The pressure gauge should read 1500 psi (103 bar) as the attachment mount is moving downward.

If the pressure is less than 1500 psi (103 bar), proceed to the next step.

Shut off the engine. Install a 5000 psi (345 bar) pressure gauge and hose (1) between the tilt cylinder rod end (tilt down) port (2) and the supply hose (3).

Step 40

Start the engine and run at 1000 RPM. Watch the pressure gauge as the attachment is slowly tilted DOWN. The pressure gauge should read 1500 psi (103 bar) as the attachment mount is moving downward. Shut off the engine.

If the pressure is more or less than 1500 psi (103 bar) proceed to the next step.

Template Name: OML_2_col

Date: 1994_04_22