Hello,
I have an old 1979 Grove RT528. I currently have issues with none of the hydraulics functions working (swing, boom up/down, outriggers, winch, etc.).
Background:
All of the crane functions were recently working. The main hoist cable made contact with a power line momentarily (big mistake I know) and some sparks flew. The crane swung, touched the power line and immediately swung off (was in contact with he line for maybe a second, sparked cable touched and sparked when it swung off). The operator then swung the crane safely away from the power line and powered the machine down. After the situation was assessed and it was confirmed that there was no damage to the power line and that the area was secure and safe to work in again, the operator flashed the crane back up. All of the hydraulic functions still worked at this time. After about 3 minutes of using the crane, the operator was booming down and cabling up, at this point all hydraulic functions stopped working. The block is still a long ways away from making contact with the shiv which makes me certain that it has nothing to do with the A2B being tripped. I also have made contact with the A2B manufacturer and they said that it would not shut down all hydraulic functions if it was tripped, just the ones that can make the situation worse. I also checked to see if the transmission was working to ensure that it was not the fibre gear, and all gears in forward and reverse worked. I am not mechanically inclined and am looking for any input people may have on where to start trouble shooting so I can point my mechanic in the right direction. I am not sure if making contact with the power line has anything to do with the hydraulics not working as they did for a while after, or if it is just a coinencedensce. I am also curious if anyone has any input on how much damage could have been caused to the cable, winch, etc. from momentarily contacting a power line. Thank you for your help.
-Nick
I have an old 1979 Grove RT528. I currently have issues with none of the hydraulics functions working (swing, boom up/down, outriggers, winch, etc.).
Background:
All of the crane functions were recently working. The main hoist cable made contact with a power line momentarily (big mistake I know) and some sparks flew. The crane swung, touched the power line and immediately swung off (was in contact with he line for maybe a second, sparked cable touched and sparked when it swung off). The operator then swung the crane safely away from the power line and powered the machine down. After the situation was assessed and it was confirmed that there was no damage to the power line and that the area was secure and safe to work in again, the operator flashed the crane back up. All of the hydraulic functions still worked at this time. After about 3 minutes of using the crane, the operator was booming down and cabling up, at this point all hydraulic functions stopped working. The block is still a long ways away from making contact with the shiv which makes me certain that it has nothing to do with the A2B being tripped. I also have made contact with the A2B manufacturer and they said that it would not shut down all hydraulic functions if it was tripped, just the ones that can make the situation worse. I also checked to see if the transmission was working to ensure that it was not the fibre gear, and all gears in forward and reverse worked. I am not mechanically inclined and am looking for any input people may have on where to start trouble shooting so I can point my mechanic in the right direction. I am not sure if making contact with the power line has anything to do with the hydraulics not working as they did for a while after, or if it is just a coinencedensce. I am also curious if anyone has any input on how much damage could have been caused to the cable, winch, etc. from momentarily contacting a power line. Thank you for your help.
-Nick
Grove Crane Troubleshooting - Hydraulics
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