342 Troubleshooting
To fix this problem:
1. Apply all safety measures to ensure safety around the vehicle at all times.
2. Ensure that the parking brake is applied.
3. Pull out the red emergency STOP button.
4. Connect a pressure gauge to each quick-connect coupler of the valve tailgate section (see Figure
8-10).
Figure 8-10
Gauges #1 and #2
5. Start the engine and engage the hydraulic pump.
6. Disconnect the packer extend proximity switch.
This will prevent the packer from returning to its initial position.
7. Push the green “start cycle” button to start the packer and pressurize the system.
Gauge #1 should remain at 0 PSI and Gauge #2 should indicate a sudden burst of pressure (from
0 PSI to 3000 PSI) each time the packer reaches the end of a stroke. If Gauge #1 indicates
pressure, this may be caused by a faulty holding valve, faulty velocity fuse or hydraulic hoses not
properly connected. Refer to the main hydraulic schematic for proper connection (see Hydraulic
Schematics on page 305).
Tailgate Lowering Spontaneously
If the tailgate seems to lower by itself, a faulty velocity fuse might be involved.
To fix the problem:
1. Apply all safety measures to ensure safety around the vehicle at all times.
2. Ensure the parking brake is applied.
3. Make sure the velocity fuse is clean and its plunger is moving freely. Replace if necessary.
Connect Gauge #2 here
Connect Gauge #1 here
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