1986 John Deere 650 Tractor - More Repairs and Updates

A tractor like this that's seen more than its fair share of use and abuse, it's no wonder that there is never a shortage of things to do on it. Take the front loader bucket, for instance. Both sides are bent in at the leading edge. I'm not really sure how that happened but they are needing some help. More precisely, help from an 18" pipe wrench. This first photo is of the right side of the bucket.

1986 John Deere 650 Tractor Repairs and Updates

The engine has been difficult to start after the rebuild (same situation as before the rebuild), and was particularly difficult after the engine had been running for a while. Sometimes it had to set a spell before it decided to start again. I figured the best place to focus on first was injector pump timing. This timing evolution is sometimes called a "spill test". The instructions say to undo the injector lines at the pump, then pull out a "delivery valve" on injector pump #1 outlet, then install a suitable piece of tubing on top of the outlet. At certain points of crankshaft rotation, fuel will flow freely out of the tube since the delivery valve is removed, then at some point of crank rotation the flow will stop. This point is called "beginning of injection". That point should put a timing mark on the crankshaft pulley in line with the timing pointer.

1986 John Deere 650 Tractor Reassembly

I'd been waiting a week to get a new pressure plate delivered but it has now arrived. New pressure plate, you ask? Well, yes, the old one is broken and the broken bits are the reason the clutch wouldn't completely release when I first got the tractor home, thus grinding gears when shifting into gear. In the first photo below, the two metal tabs are 2/3 of what is supposed to pull the pressure plate away from the clutch disc when the clutch pedal is pressed down. Without those two tabs, the pressure plate stays somewhat engaged with the clutch disc. So, I had to order a new pressure plate. I didn't realize the broken status until I was installing the clutch and pressure plate onto the rebuilt engine, at which time I noticed something wasn't quite right. This little detour did save me money though, because if I'd purchased the pressure plate from the company I bought the engine gasket kit and parts from, it would have been about $40 more than the $60 I paid for the one I got off eBay.