L4600 won’t move, possibly seized brakes

[Sues]

Help please, I recently purchased a secondhand fully serviced L4600, I was learning how to use it so I was in low gear 1 or 2 generally slow with no acceleration some times fast when driving to and from the piles of sand and mulch I was moving and spreading mulch and sand for 4 hours one day, the next day I went to scrape some soil and it seemed sluggish. When I started to scrape the soft sandy soil, it wouldn’t move forward I trird reverse and moved forward again, then it just wouldn’t move forwards or backwards. I checked all fluids, the tractor revs ok, I tried switching from 4wd to 2wd and back, tried moving with differential lock depressed, the left hand front wheel twitches, nothing else moves. While searching to find out what was wrong I discovered the breaks had not released when I was using it so I was working with them on. Could I have seized the breaks and is there something I can do to try and fix them myself. I would really appreciate your assistance I am located in Queensland Australia. Totally new to using tractors and no one around who has ever used one.

 

[Caden]

I think you have clutch problems. One check that I can think of:

1.) With brakes off, trans in neutral, can you roll the tractor by curling the bucket against the ground? That would test your theory of locked brakes.

 

[North Idaho Wolfman]

It's near to impossible to lock the brakes (besides setting the parking brake) because they are wet brakes.

 

[Russell King]

The one thing I can think of that might make the brakes “seize“ in the applied position would be corrosion or something jamming the linkage. Look at the pedals to see how they rotate and see if there is corrosion and a place to grease them. Then look at the linkage and see if it moves freely or is corroded at some joints. Apply rust penetrating oil if they are corroded or spray grease if they move okay. Then where the linkage attaches to the rod into the tractor case see if that rod is actually rotating or if it is seized by corrosion between the tractor case and the rod. Apply penetrating oil there anyway and if seized use something that will break the corrosion down.

Good luck and let us know what you find.