My Toughest Hydraulic Job Ever. DIY Advanced Hydraulics. JLG 80 HX Boom Lift

This hydraulic compartment has always loomed over me, like a mysterious monster that could rear its ugly head at any moment. In this video, I finally work through the system and figure out how to troubleshoot, test, and repair complicated hydraulics!

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00:00 Intro and New Test Kit
0:53 Telescope cylinder details
3:37 Attempt at testing pressure
6:57 BougeRV integration
9:19 Testing pressure
13:33 Adjusting pressure, first try.
15:04 Figuring out the whole system.
20:31 Adjusting valve block relief valve, 1st try.
27:47 Adjusting pressure, second try.
30:34 Swap relief valves
36:26 Adjust pressure, third try.
39:10 Adjust pressure, FOURTH try!
41:12 Success, sort of.
42:29 The final fix.
53:21 Outro