Recent content by tuolumne

Piston F is hollow inside, so no vent would be necessary for its movement. I have the whole assembly in pieces and cannot find any visible damage to o-rings or moving parts. However, I did notice that the 4 ball bearings (W) are missing. Previous owner had it apart?? I am not sure what their...

For a while I have had oil oozing out around the plate #150 in attached diagram. There is a pinhole drilled in the plate and now oil always comes out of it while that circuit is in use, and sprays out when the relief valve trips. What is going on? There is no visible O-ring when the plate is...

3520 with 3000+ hours. Lots of loader work and woods work. Transmission has been flawless until now. There has been no slow change or accident; just sudden failure. First, does anyone have access to a service manual? This machine won't engage forward or reverse. The linkage is working...

I have a 3520 with a locked up front end. The wheels spin freely (one each direction) but the input shaft will not move. I have not forced it; the tires were skidding on slippery mud instead of turning and I was able to back out of the situation sliding on the loader with tires lifted. At...

I need a 12V source with a switch for a solenoid valve on a trailer. Are there spare spots in the stock fuse box on this machine? I do not have a cab. Any links to past threads for electrical modifications would be helpful.

This question also came up in the JD forum, but is more appropriate to ask in the hydraulics. I have this valve - 2 SPOOL 8 GPM PRINCE MB21BB5C1 DA VALVE - and would like to use the power beyond function. What happens if something is not always hooked into the outlet port? Will pressure dump...

I may be purchasing a used Metavic 1150M14 tomorrow. The manufacturer said 8gpm minimum. Please help me understand the 3520 hydraulics better so that I can hook this thing up most effectively. I need an open circuit (??) to run the log load which has independent valves on the trailer. I also...

Can I change the hydraulic filter without changing the oil? I have 500 hours on 3520 power reverser. The oil seems very clean and 6 gallons isn't cheap.

Well, here is what I came up with. I did a test run today with a woods crate we built. That is 40 cubic feet of green sugar maple, which must run upwards of 1600 lbs. With the riders, forks, pallet, chainsaws, logging chains, mauls etc. the total weight is over 2000 for sure. This was a very...

I originally asked some questions in the JD forum specific to the 3PH lift capacity of my tractor. Today I tested out this setup and it easily picked up 1500lb pallet of hard maple boards. That meets my criteria since this setup will be used to carry a 6 barrel (200 gal.) sap gathering tank on...

I would like to weld some pins on my FEL forks to pick them up with the 3PH and use this to carry a sap tank in the bush. I have carried a tank on the front (100 gal.) in the past with the forks, but this takes away rear end traction. Also, it is handy to have a loader up there to help out...

The castors are rated at 2000 lb. each, so they should be OK. Today I milled a 24" diameter x 10' maple log. That has to weigh around 2000 lbs as my loader could just lift it. I was suprised that I was able to flip the log with a peavy after a few cuts; I do not yet have a boat winch that I...

Well, it's been a while. Now the bandmill is reality and tomorrow I intend to start sawing lumber. The saw head design is based on parts available from Linn Lumber. I modified the saw-head carriage design to recieve PTO power and remain stationary. The carriage travels on the rails and is...

My three point implements will often slowly drift downwards, especially if the tractor is on bumpy terrain. Is there a way to snug up the lever to prevent this? It seems to have gotten worse lately.

I'm sure this has been done many times. I am a very green welder. I hope to take a class at the local tech school in the near future. Please do not laugh at my welding ambitions noted below. In the past I have done a number of repairs on farm equipment with an old thunderbolt stick welder...