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North Carolina | you have to adjust the cam where the park brake cable attaches, under cab & going into left side of transmission. There is a bolt that you turn to shorten or lengthen the travel of the cam. This is what compresses the brake discs & pads together. Once pads wear a little bit the computer senses it thru the park brake motor/cable assembly, thus throws those codes . You should maybe get a service tech to come out and do it, watch & take notes. If you keep using tractor with that code displaying the tractor computer will eventually shut down the transmission into creeper mode where it will only go 1 mph & the brake stays engaged electronically, leaving you stuck in field or stuck on highway. If you learn the below procedure, then you never need worry because you can handle the situation when it occurs
If your brave and patient you can do it.
No need to turn engine on during this procedure.
If doing by yourself put 50 to 75lb weight in seat, fert/concrete bag or couple of dumb bell weights. This will keep electronic park brake (EPB) from engaging when you get out of seat, or have somebody sit in seat.
Reference the following;
1. Push both brake peddles in
2. Turn key on
3. Put in Neutral
4. Push button on end of shift lever, when EPB completes spooling take foot off brake
5. move shift lever back into park
You want to adjust the hand park brake to where it engages the pads/discs at the 8th click, snug not tight as heck. there is an adjusting nut at cable end on hand park brake in cab. This is your ballpark reference point for where you want the bolt to be on the EPB cam face.
after you adjust it and engage hand brake check bolt on EPB cam, is it tight against cam or loose?
If loose; tighten to cam face, release hand brake and run steps 1 thru 5 above. you most likely will have to run steps 1 thru 5 a few or more times.
If tight; run step 1 thru 4 and tighten bolt 1 or 2 turns, now step 5
Each time run steps 1 thru 4, tighten bolt 1/2 to 1 turn, then step 5..Rinse and repeat until codes goes away after step 5
There are a plethora of codes; 12188, 12202...then during procedure above you might see 122185 and 12213
Sometime you keep rinsing and repeating many times and EPB may spool up and throw another code when it senses its to tight, no worries just lossen bolt on cam a couple of turns and engage EPB. You need to cycle ignition key to the off position if this happens before you run steps 1 thru 5 again.
Sometimes the EPB will get locked in the engaged position, you ran tractor to long with codes showing or doing this adjustment above the computer freeks out..Just use the hand crank cable and manually wind up the EPB motor behind cab.
You or a service tech may do this in 15 minutes or 3 hours just depends how stubborn the EPB is. A Service Tech will be at least $300 to $500 , thats my past charges for this until I learned how. Alway keep a 15/16 wrench in box of tractor for cam bolt, once you get stuck somewhere away from house or cell phone signal you will wish you had it. It will happen again when you least expect it
1st step; unspool EPB, step 1 thru 4
2nd step;
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Puma 165 park brake problems( power shift trans)
