753 Melroe Bobcat just stopped

[RonAus]

Hi All, total newbie here, I was replacing one of the pins and a bush on the bob-tech, had the machine out front for degreasing, moved it back into the work space, replaced the pin and the bush with the arm at high (locked). Got back in, brought the seat bar down, turned the key, heard a click, started the machine but it would not move forwards or backwards, up or down, tilt or otherwise. I have had this problem before and it was resolved by lifting up and down on the seat (yes a seat sensor type) and also raising and lowering the seat bar a few times. Then by reversing (trying) this normally allowed the machine to go forward and also raise and lower as normal. I have removed, cleaned and replaced the seat sensor, just cleaned the seat bar sensor and did a temporary connection without refitting to test. Still get a click, it appears that there are no lights on the BICS and nothing else apart from the engine running. I was in a car accident a few years ago when I last used this machine and would have remembered all the little things like: do the BICS lights have to be on when you turn the key or off? Does a click when turning the key on mean the BICS is okay or not? I do not have a manual for this machine and the only electronic version I was able to view was very poor quality which did not help and is impossible to decipher most of the time. If anyone has some ideas or info to help someone with a bad memory, it would be appreciated. Ideally if someone knows about the BICS sequence, lights on or off, has any ideas to help and also if someone has an electronic manual to help me figure out what the correct terms, parts, wiring etc is that would really be appreciated. I look forward to hearing from you ps, I have been reading through the forum which is why I decided to join.

 

[OldMachinist]

When you turn the key the click is the shut down solenoid opening. The power light on the BICS should also come on. If you pressure washed it you may have gotten water in the BICS box or connector.

 

[OldMachinist]

When you turn the key the click is the shut down solenoid opening. The power light on the BICS should also come on. If you pressure washed it you may have gotten water in the BICS box or connector.

Forgot to say that if water got into the box or connector then it may have blown the BICS fuse. The fuses are under a cover in the engine compartment. Make sure everything is dried out before replacing the fuse.

 

[RonAus]

Forgot to say that if water got into the box or connector then it may have blown the BICS fuse. The fuses are under a cover in the engine compartment. Make sure everything is dried out before replacing the fuse.

Hi OldMachinist, Thanks very much, you beat me to it with the fuse and location, I will be emailing you shortly, thanks again.

 

[RonAus]

Hi OldMachinist, Thanks very much, you beat me to it with the fuse and location, I will be emailing you shortly, thanks again.

Hi OldMachinist, it seems I shoudl have checked the basics first. When the battery was disconnected whilst we were working on the pin and bush replacement, one of the lugs on a relay (most likely the BICS) broke off. As I did not disconnect or reconnect the battery, I did not see it until I opened the door during a two minute lull in the rain today. I will now need to wait for some dry weather, take it off and replace it. That is most likely the cause although I will check the fuses as well. Back to reading the manual to make sure I reassemble and refit the seat bar sensor correctly. Thanks again.

 

[RonAus]

Hi OldMachinist, it seems I shoudl have checked the basics first. When the battery was disconnected whilst we were working on the pin and bush replacement, one of the lugs on a relay (most likely the BICS) broke off. As I did not disconnect or reconnect the battery, I did not see it until I opened the door during a two minute lull in the rain today. I will now need to wait for some dry weather, take it off and replace it. That is most likely the cause although I will check the fuses as well. Back to reading the manual to make sure I reassemble and refit the seat bar sensor correctly. Thanks again.

Went to the local Clark parts supplier today and purchased three new relays which normally cost $30.00 plus tax, I was going to buy four but they had run out. when I got back and went to replace the damaged relay, I found it had been replaced with a non bobcat relay and had to match it at the local auto store. It only cost $7.50 plus tax, apparently it does exactly the same job just a heck of a lot cheaper FYI. Plugged in the new relay, temporarily taped the seat bar sensor in circuit and all went well, no problems. Now I intend to replace the traction control switch which has never worked but the machine must have been re-wired to allow it to operate. My question is, is the traction control/push to start switch wired the same as the traction control switch as I have a replacement for the first but not the second?