A not too expensive starting fix for my 4020 gas, was to replace the pathetic Delco 10 MT starter with a Delco 20 MT . It bolts right on and has twice the cranking power of the OEM 10MT.
That starter change took it from a rig that struggled at every start and required the steering wheel wiggle every time, to a rig that starts instantly and actually has to slow down to hit idle speed. The load of the hyd pump means nothing with that powerful starter.
I stayed away from the pump destroking kits because the manual kit is an absolute pain in the donkey with you needing to get down and turn it on / off at every start, and the electric destroker kit is outrageously expensive at near $600. Actually if your able to rebuild a starter, you can convert a 10 MT to a 20 MT by installing a salvage yard 20 MT field housing, bolts and armature in your old 10 MT starter. Otherwise a complete Rebuilt starter from a good company like Wilson, is not all that expensive.
With the 20 MT starter and no destroke kit, turning on that 20 MT rocks the tractor a bit on the tires and it cranks at a steady guestimated 400 rpm. This is with an single Exide Orbital spiral cell AGM battery, kind of a clone of the Optima red top, but $40 cheaper.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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