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I have a 2004 kubota kx 121-3 mini excavator. The other day…

I have a 2004 kubota...
I have a 2004 kubota kx 121-3 mini excavator. The other day the thumb attacment started drifting downward and I finally had to just secure it with a tie down to finish my trench. I assume that there is either a bad seal or valve in the hydraulic cylinder. My question is: Do I need to bleed off hydraulic pressure before I remove the cylinder to take in for service. If so, how do I do that?
Thanks,
Marv
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Answered in 12 minutes by:
7/1/2014
Mechanic: Curtis B., Technician replied 8 years ago
Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 43,987
Experience: Technican turned service manager with multiple lines of equipment and rental units.
Verified

Curtis B. :

There will be no pressure on the cylinder as long as the engine is not running and you are not working the lever. Just loosen the lines, bleed off any residual pressure and remove the lines and the pins to remove the cylinder.

Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 43,987
Experience: Technican turned service manager with multiple lines of equipment and rental units.
Verified
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Curtis B.
Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 43,987
43,987 Satisfied Customers
Experience: Technican turned service manager with multiple lines of equipment and rental units.

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