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With the onset of health problems I suddenly find myself having to pay people to fix things I used to fix myself. I never realized how much money I was saving. Just recently the commercial torsion spring garage door opener in the shop hiccuped and the cable jumped off the drum. My $25 / hour...

The following is excerpted from this scholarly paper on fuel injection system design. https://dieselnet.com/tech/diesel_fi.php The red highlighting is mine. So simple arithmetic says in an engine operating at 2000 RPM a millisecond change in signal propagation time will advance/retard SOI by...

No trig - just basic arithmetic. A crankshaft rotating at 2000 RPM sweeps (360) x (2000) / 60 / 1000 = 12 degrees in a millisecond.

Thats the basic arithmetic. So how many degrees of rotation does a crankshaft turning at 2000 RPM sweep in a millisecond? Thats the ignition timing change per unit of tubing length. I think this may be a microsecond rather than millisecond event. Dan

it is not normal for the implement to bounce. How much does that box blade weigh? Lets also review operation of the 3pt. Your tractor has position control. You dont need to inch the lever up. Simply pull it up quickly and the 3pt will come to the top at its own speed. The slower the engine...

I dont need to consult Google. I have configured dozens of these compact tractor valves and the requirements and hookup are standard Purchase any generic P40 loader valve and the power beyond sleeve to go with it. Cost around $275 or less. Connect the existing P hose to the P port on the P40...

Here is the Messicks parts diagram for the loader hydraulic outlet block used on ths IH 245. Its the exact same idea as the current Kubota outlet and has pump, power beyond, and tank ports. The joystick valve I linked would be a simple drop in replacemenyt Dan

Its a 40+ year old valve. If he could get the same valve he probably would not be asking this question.

Like I said above ,- my understanding is its not the velocity of the fluud. Its the time it takes for the oressure wave to get to the injector. The pressure wave is traveling at ~1325 m/sec which is orders of magnitude faster than the fluid flow. Using that number you should be able to compute...

I am no diesel engine expert but as I understand it the issue is not compression of (incompressible) fuel. Its the propagation time of the pressure wave. That wave travels at the speed of sound (in diesel) so you want the lines to all be the same length. Most if not all of that goes out the...

There is a very real reason to replumb the system. The tank circuit in most modern control valves cannot handle power beyond. pressures. Specifically the tank ports are designed for 400-500 PSI max, If you start pressurizing the tank port to 2400 PSI seals can and do fail. Do not expect the...

Looking a little closer at the diagram item #8 looks like it might be a plugged tank port. The legend for that diagram would be helpful..... Dan

It worked but its a poor design. Replace it with a open center loader valve with a power beyond port .He will need to add a tank return hose to the two existing hoses. Personally I would dump the two sticks and spend a bit more for a vakve with joystick control The link below is just one of many...

The Basics Your tractor has an open center hydraulic system. The pump continuously circulates oil in a loop called the NEUTRAL circuit. The term NEUTRAL describes the center or neutral position of the control valves in the system. In the NEUTRAL position low pressure pumped oil enters the...

These types of valves are very reliable especially given their extremely low cost. The valve mechanism is a sliding steel cylinder (spool) in a cast iron bore. The fluid and pressure "seal" is acheived by a sub-thousands radial clearance. The only elastomeric seals are the low pressure dust and...

Whoops - external cylinders. I was thinking internal piston and cylinder and had not considered that. That said you would not see the leak. Fluid would move internally from base end to rod end and back to sump via the breather. If you can pull the breather lines off you would see any leakage...

The WSM desctibes the adjustment but I dont think thats the problem. The jerk upward is feedback diung its job as designed. Its raising the 3pt to compensate for leakdown in the lift circuit. As suggested the leakdown is commonly caused by a leaky piston seal. Unless you are having operational...

I am not surprised. Here is a picrure of the fronts on my 2021 L3901. It has 410 hours on it and is operated full time in 4WD. I am going to say 95% of that time was on grass, dirt, snd gravel with less than 5% on the asphalt and a lot of that in snow. In 4WD the fronts are always slipping by...

Are hoses #60 and #90 the ones you are trying to replace? If so which end can you not reach? One also has to wonder what caused them to "blow". Unless the were danaged that requires a lot of pressure. Dan

The N port on convertible valves is internally connected to both the tank (T) and neutral (N) cores. The conversion sleeve or plug simply isolates the T cores from the N core. Only one of the ports is machined for the plug or sleeve. You do not have a choice. The number and location of T...