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Message: <blockquote data-quote="Tuned" data-source="post: 78199" data-attributes="member: 11207"><p>Howdy all. Newb to the forum from Int'l. Falls MN-land of tall snowbanks. I've got a real interesting machine that I need to troubleshoot. The 520 has an engine from a Subaru car! Lot's of power, little info to go with it. Last winter, in the middle of a blizzard, in the middle of the night, in the middle of the highway, did I mention it was 15 below at the time?...well hmph. Lost ALL hydraulics to both drive and arm/bucket. No leaks. I could hear that sickeningly familiar zzzzzz sound of stripped gears? Engine still ran fine. I'm finally ready to start digging into it. I'm suspicious of the motor to pump coupling because I'm sure it is just some jury-rigged welded together something or other. First question to start with. Engine removal: Is the hydraulic pump coupling likely to be just a friction fit (splined shaft)? I would hate to cause damage by pulling the engine backwards against a bolted (solid mount) coupling. Any advice is much appreciated. This could turn into a bit of a project one way or another. Good thing I have an old plow truck as back-up <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>