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Technical reference page: 26

Hydraulic break-back for 18-24m booms


1. Fit tee-piece under spool valve in tank return line

2. Remove the QR coupling from the end of the hose that feeds the outside of the outer fold rams

3. Fit the QR coupling onto the relief valve assy

4. Fasten the relief valve assy onto the end of the hose

5. Plug the assy back into the original coupling

6. Fit new QR coupling & hose to tee piece

7. Plug small return hose into new coupling

Check that the outer boom sectiopn can be pushed back by hand (needs to be quite strong). The adjuster on the relief valve may need fine tuning either way.