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Case 650K stuck in forward at all times

lbfarm ยท 2025-10-23 20:18

Starts fine. In forward immediately as you can hear pump in drive but does not move until drive handle is moved forward or reverse but after shifting keeps moving forward either in F N or R until push brake. Does not steer correct while moving. Foward test at port shows in forward pressure at all times after start up. Shows FNR on dash correct when shifting. Brake light goes off/on correct. No lights on dash staying on. No codes. Replaced all relays/fuses with new terminals due to corrosion. Drive controller replaced shortly before for not moving and worked correct for several hours. After stuck in forward I swapped drive controller with another good one to see if it changed and did not.

Replies3
  1. #1lbfarm2025-10-23 20:31

    More info; Dozer will only start with safety lock handles forward, will not start with them up or back. It will also start in F. N. or R.

  2. #2reganj2025-10-23 20:35

    The more info you give the better advice you will get Start with a serial number Is the machine new to you Did the problems start all at one time or have things gradually happened Any other info you can provide besides the above questions will help to diagnose

  3. #3lbfarm2025-10-31 19:09

    Both forward test ports show 3k pressure at start up. Reverse 0. nothing changes when shift FNR Early serial# Electrical repair with new controller installed worked fine for several days then did this