Question about Garden
I am in need of a owners manual for my 1990 P45MH 4T digger Derrick Boom Truck. Gross lifting Capacity is 20,000lbs. Book higth is 45' its a 3 stage boom with the third stage being fiberglass. The 2nd stage hydraulic cylinder is leaking and I need to understand how to remove this cylinder from the inside of this enclosed boom. My email address is firstname.lastname@example.org , my cell # is 910-520-5060 please call or email me with any help or suggestions you may have. Thank you much. Charles Duncan
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Posted on Jan 02, 2017
Ive never seen a slave cylinder get stuck. there is a lot of force against it from the clutch diaphram, but there is a first time for everything!! I have seen diaphrams on clutches go bad and "over-center" when depressed. watch the slave and see if its staying extended (unless yours is located on the throwout bearing and you can't see it) If it's on the outside of the bellhousing, you can easily change it if its bad. If not the transmission needs to be removed to get to it.
Posted on Apr 21, 2009
Try this link and see if it will help you any with the info that you need. Sure hope this helps you find resolution to the problem. Best wishes.
Posted on Jul 23, 2009
I think I can help you with it. Last year I had similar situation with my MM55-SR flashing red CPU light. The arm stopped moving, but the blade was working and I could drive as well.
I inspected all position sensors in the arm - each joint should have one. They look like small cylinders bolted to the joints of the arm with 3 wires coming out. In my case I had problem with the first sensor located by main (boom) piston where it is attached to the body of the machine. I removed this sensor from the arm with its wire. One wire was broke very close to the sensor housing. I was able to solder it and it solved my problem. Sometimes those wires can touch to the metal arm and rub off insulation causing electric shortage which also may stop the arm from moving. Check all connectors and wires for each position sensor first.
Hopefully this will help solving your problem.
If you want to share your experience you can email me at email@example.com
Posted on Aug 20, 2009
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