Hi, my 753 Bobcat with 1046 hours parking brake will engage/disengage while working. Bics overhead panel traction light goes out when parking brake engages. If running slow machine stops a few seconds until brake disengages and light comes back on. If running fast brake will stop machine hard and kill engine. Turn key to start and machine works until brake locks up again. Replaced all relays/fuses and sprayed electronic cleaner in sockets to clean connections in box under seat. Cleaned and tightened positive and ground connections. Battery is good and alternator is charging. Replaced seat bar sensor. Described symptoms to service manager at Bobcat dealer over phone and flow chart indicated overhead brake switch or rpm sensor at flywheel could be faulty. Disconnected brake switch and haven’t checked rpm sensor. No codes show on panel. Also oil light on panel would come on with beep. Engine was running fine and oil level was full so disconnected oil pressure sensor. Replaced oil sensor and problem went away for about 4 hours now oil light comes on with beep and goes off and comes on again with continuous beep. I’m beginning to think I may have a computer problem. Any suggestions? Thank you.
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