Timing marks on 2440 john deere - John Deere Garden

SOURCE: system creeps down even when tractor is operating.

There are 2 potential problems -
1. Leaking spool on the control valve - rebuild the vale.

2. Cylinder blow-by. Disassemble piston and replace the seals.

To test if its the cylinder - retract the cylinders all the way... remove the hoses on the blind end (non rod end) of each cylinder, and again pull the valve to the retract position.

If fluid continues to pour out of the cylinder - the piston seal is damaged, and the affected cylinder must be repaired.

To test if the valve spool is faulty - disconnect the a and b ports just after the valve. Turn on the system and check for seepage from the disconnected lines (without moving the lever).

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SOURCE: I just purchased a 2440 john deere tractor it was

would say that your variable displacement pump has rust or other on/inside, it.

Are you using hydralic fluid (not eng oil) in her?
Can you let it run on blocks for a bit - drain and re-fill transmission?

SOURCE: pto spis all the time on my 1989 john deere 420

Are the blades turning? If they are not, this is normal. The PTO is an electro magnetic clutch that engages when you apply electricity via the PTO switch. When it is disengaged, the bearings and top portion of the clutch will turn because it is coupled to the engine. If the blades ARE turning then you have a bad clutch and will need to repair or replace it

SOURCE: timing gear replacement for john deere js40

it fit between the crankshaft and flywheel

SOURCE: 79 John Deere 2440 w/ 146 loader: loader shudders

There are air in the system need to bleed the system