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Read articles →This is a hands-on, start-to-finish DIY service video: the owner removes the front loader for access, then walks through engine oil, hydraulic oil, hydraulic filters (inner/outer/inline), air filters, and chassis lubrication on his own used 3520, including a rounded-off drain plug fix and priming the fuel filter. He names the roughly $300 John Deere parts cost. Best for owners planning to do their own service and wanting real procedural detail, not a quick overview.
Posted by an owner-operator on the Lived & Learned DIY channel, sharing his own trial-and-error approach rather than professional or dealer training.
Put the loader in the upright, unlocked position, walk to the other side and release the locking system, watching for hoses, then lift the frame off, leaving only the hydraulics attached.
With the engine off, move the control lever side to side and back and forth briefly to relieve pressure on the hydraulic couplers and hoses before disconnecting them.
A wrench will not turn a rounded-off plug, so the owner used straight jaw vice grips to remove it and planned to replace it with a new one from John Deere.
The owner says the hydraulic filters, oil filter, air filters, and motor oil purchased at John Deere cost about 300 dollars total.
