GROMMET 6K9555 - Caterpillar

The line relief is set higher than the main relief. Do not increase the main relief setting to check the line relief setting. Damage to the hydraulic system may result.
Connect Caterpillar ET to the machine. The ET connector is located on the control panel on the right side of the cab.
Turn the engine start switch to the ON position.
Open the ET software program.
When ET has started, start the engine. Run the engine at high idle. Warm the hydraulic oil to normal operating temperature.
Illustration 3 g02593416
Typical example
Select "Implement 994H". Press the "OK" button.
Illustration 4 g01447462
Typical example
Select "Diagnostic Tests" from the "Diagnostics" menu. Select "Cylinder End Line Relief Pressure Tests".
Illustration 5 g01447484
Typical example
When the dialog box appears on the screen, read the information in the dialog box. In order to continue with the test procedure, select the "OK" button.
Illustration 6 g02593636
Typical example
When the dialog box appears on the screen, four checked boxes appear. Leave the check mark in the box for each test that will be performed. Select the "Begin" button in order to start the procedure.
Illustration 7 g01447223
Typical example
Press the "Next" button in order to begin the procedure. Follow the instructions on the screen. A check mark will appear next to each step as each step is completed.
Make sure that the area around the machine is level and clear of obstacles. Keep all personnel away from the machine. Press the "Next" button.
Engage the parking brake.
Lower the work tool to the ground. Press the "Next" button.
Place the steering frame lock in the LOCKED position. Press the "Next" button.
Turn the engine start switch to the OFF position.
Place the hydraulic lockout switch in the LOCKED position. Press the "Next" button.
Adjust the raise line relief valve.
Loosen the locknut on the valve.
Turn the adjustment screw by two complete turns in the counterclockwise direction.
Tighten the locknut.
Start the engine. Ensure that the parking brake is engaged.
Engage the transmission lockout.
Place the hydraulic lockout switch in the UNLOCKED position.
Warm the hydraulic oil to a temperature of 43 °C (109 °F) or higher. Press the "Next" button.
Illustration 8 g01447224
Typical example
Place the lift control lever in the RAISE position until the linkage is fully raised.
Place the tilt control lever in the TILT BACK position until the bucket is fully racked.
Run the engine at low idle.
Ensure that the lift control lever and the tilt control lever are in the HOLD position. Press the "Next" button.
Place the lift control lever in the RAISE position. Hold the lever in the RAISE position until the check mark appears on the screen.
Place the lift control lever in the HOLD position. Press the "Next" button.
Lower the bucket until the bucket rests flat on the ground. Press the "Next" button.
Turn the engine start switch to the OFF position.
Place the hydraulic lockout switch in the LOCKED position. Press the "Next" button.
If the measured pressure was within the specification, ET will proceed to Step 32. If the pressure was not within the specification, proceed to the next step.
Illustration 9 g01447225
Typical example
A dialog box will appear. The box will indicate that the measured pressure is not within