lowering too fast - Maintenance & Troubleshooting discussion in Forkliftaction's forums

Discussion:
lowering too fast

Crown RR5200

I have a reach truck that's lowering way too fast. Activating the velocity fuse but not all the time, No codes. I turned down the lower speed in the performance menu from 90 to 70 (lowest setting) Any further insight will be much appreciated

Posted 22 Nov 2016 07:46
By buddy84
joined 17 Feb'16 - 12 messages
California, United States

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Hi. Yeah i came right. Proportional valve faulty.
Fault code 474 and 473 popping up now and then ? Do you know what it is ?

Posted 28 Nov 2016 13:47
By landman
joined 23 Nov'16 - 2 messages
Waikato, New Zealand

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For best results

Posted 23 Nov 2016 14:09
By buddy84
joined 17 Feb'16 - 12 messages
California, United States

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My issue inded up being a bad proportional lowering solenoid valve. Replaced it, calibrated valve hydraulics and everything was good after that. Which lowering valve did you replace? Keep in mind the calibration procedures must be followed correctly.. Forks tilted up, p1 lowering speed @ 90, 1500lbs minimum.

Posted 23 Nov 2016 14:08
By buddy84
joined 17 Feb'16 - 12 messages
California, United States

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hi. I have the same problem on a crown rr 5700. did not lower at all. replaced the lowering valve. it lowers now but very fast. the velocity fuse comes in to play and only the free lift comes done. what have you done ?

Posted 23 Nov 2016 13:49
By landman
joined 23 Nov'16 - 2 messages
Waikato, New Zealand

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