DMF ROTO-180, Installation And Parts & Service Manual

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DIVERSIFIED METAL FABRICATORS, INC. ROTO 180
© 2017 DMF, Inc. All Rights Reserved. 3-5
3.3 TROUBLESHOOTING – HYDRAFORCE MANIFOLD
NOTE
Thoroughly clean the entire manifold and its surroundings before removing any hoses or
components to avoid introducing any foreign objects into the manifold.
WARNING
Always set the support strut before working beneath the dump body. The strut prevents
the dump body from lowering unexpectedly.
3.3.1
General Procedures for Common Issues
Many of the common problems with this system can be addressed by following the steps below.
If these steps do not solve or identify the issue at hand, continue on to the following sections.
1. If equipped with a hydraulic diverter valve, ensure it has been switched to operate the
ROTO 180 system.
2. Ensure the PTO has been engaged properly following the PTO Operations Manual
provided with the truck.
3. Verify the ROTO 180 system has been enabled and the red LED is illuminated.
4. Ensure the body is raised above the center lock pin before attempting to rotate.
5. Ensure hydraulic fluid levels are adequate to operate all cylinders. If the hoist cylinder
has been raised, the fluid level in the tank will appear low.
6. Check for any signs of hydraulic leaks and tighten fittings as necessary.
7. Check for clearance between the upper and lower subframes. They should never contact
unless the dump body has been overloaded or the subframe has been bent. If in
contact the ROTO 180 will have difficulty swinging.
3.3.2 Movement Troubleshooting
The dump body will not rise
A. Refer to Section 3.3.1 to address some of the common issues with the HydraForce
Manifold.
1. Check to see if the tailgate functions properly and listen for hydraulic loading on
the hoses.
• If there is no response there is an issue with the hydraulics or the pumps.
Refer to the hydraulics troubleshooting, Section 3.3.3.
• Continue on if the other functions work properly.
2. Check the needle valve that manually overrides the lowering operation.
• If the valve is not completely closed and the jam nut fully seated hydraulic
fluid will bypass the hoist cylinder and be routed to the tank.
3. Disconnect the main hoist cylinder from the dump body to raise it high enough
and set the support strut. Remove the subframe cover plate to access the
manifold.
4. Find the solenoid valve for raising the dump body. It should be illuminated when
power is being sent to the manifold.
• If this connector is not illuminated refer to Section 3.3.4 for electrical
troubleshooting.
• If the connector is illuminated ensure it is fully seated. Check the valve
has been properly grounded. If this does not solve the problem there is
an issue with the solenoid valve, coil or an obstruction in the manifold.
Contact DMF for additional assistance.