• Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!

2007 310SJ Parking brake won't release

W

WorkinforaLivin

Member
Joined
Oct 28, 2014
Messages
6
Location
FSJ
When I fire up the backhoe, the park brake will intermittently release when using the unlock switch. Every now and then it will release on the first attempt. Sometimes nothing will happen and I will get a "park brake circuit failure"(522398.14) code. A couple times I have got it to release by using the outriggers to lift the rear tires off of the ground and then try the switch again. Whatever it is it seems to be getting more temper mental and not allowing me to unlock no matter what I try. I've also tried moving the machine slightly with the loader bucket to release any tension on the driveline. As far as I can tell the wiring to the sensor on top of the rear diff appears to be in good shape and the plug is tight and secure. The switch itself seems to be in good working order because it will always engage the park brake and always attempts to unlock it. I don't know how the park brake system works on these and any info or troubling shooting tips is greatly appreciated. I thought about just replacing the sensor on the diff but would rather not throw parts at it unless its needed.
 
I

isx2009

Member
Joined
Feb 18, 2016
Messages
11
Location
missouri
The park brake is released by trans charge pressure. The solenoids are one top of trans. Remove the rubber mat and floor plate by the brake pedals to gain access the top of trans. Swap the park brake #7 and different lock #8 solenoids they are the same part number. Remember to blow all the dirt off around them so it does not fall down in trans. If your problems goes to different lock circuit then you know it's the solenoid. You can also ohm them and they should be the same resistance when they are unplugged. Depending on how much you use diff Screenshot_2016-11-28-11-06-11.jpglock you can probably just leave it that way till they both fail
 
W

WorkinforaLivin

Member
Joined
Oct 28, 2014
Messages
6
Location
FSJ
Swapped them and park brake is working properly again. Thanks for the great advice. Do you have the part number for those solenoids so I can track down a decent deal online?
 
I

isx2009

Member
Joined
Feb 18, 2016
Messages
11
Location
missouri
The part number is AT310584. If you ever need part numbers John deere puts all the part's diagrams online. Just seach for John deer parts and the catalog will pop up. Just enter model number and I search by section. It takes some practice finding stuff but it gets easier the more you use it. Watch the serial number breaks! Glad to hear brake is working again.
 
I

isx2009

Member
Joined
Feb 18, 2016
Messages
11
Location
missouri
It should be. I think they all use the same trans. If you swap soleniods just compare them to make sure they are the same
 
ASPHALT04

ASPHALT04

Well-Known Member
Joined
Mar 9, 2008
Messages
137
Location
Wisconsin
Occupation
Owner / Doing whatever it takes to pay the bills!
We are having same intermittent issue with brake. Is there a way to bypass the the parking brake? Not permanently, but we are working in lane closure situation and are weaving in and out of the closure with the machine.
 
I

isx2009

Member
Joined
Feb 18, 2016
Messages
11
Location
missouri
Get under machine and where the rear drive shaft goes into the rear axle you will see two bolts on each side. Loosen the jam nut and screw in the 2 bolts till they stop then tighten the jam nut back down. This will disable the springs in the park brake. Block the machine before you do this, as soon as you screw the bolts in it will roll!!! Then you have to jumper the switch on top of the axle, right on top of the drive shaft. It is a green sensor. If the tcu does not see the brake released it will not go into gear. You will have no park brake when you shut machine off so either chaulk the wheel or put your stabilizers down. Be careful out there I would only do this as a last resort!!
 
ASPHALT04

ASPHALT04

Well-Known Member
Joined
Mar 9, 2008
Messages
137
Location
Wisconsin
Occupation
Owner / Doing whatever it takes to pay the bills!
Thanks for info. I know exactly which 2 bolts and the sensor you are talking about.
I just wanted to make sure there was a way to bypass just Incase it acts up while out in traffic. Don’t need to have one lane closed and the other blocked with a non moving backhoe.
 
ASPHALT04

ASPHALT04

Well-Known Member
Joined
Mar 9, 2008
Messages
137
Location
Wisconsin
Occupation
Owner / Doing whatever it takes to pay the bills!
Thanks for info isx. It acted up and we had to back it off. Replaced solenoid next day and worked fine up until today. It’s popping 522398 code, pbrake light flashes along with service light when you try to release the brake.
Normally when brake is applied it will not allow the machine to go into forward or reverse, however now while light is flashing it will go into gear but parking brake is still engaged??????
 
M

Mimers

New Member
Joined
Jan 24, 2020
Messages
3
Location
Philadelphia
isx2009 said:
The park brake is released by trans charge pressure. The solenoids are one top of trans. Remove the rubber mat and floor plate by the brake pedals to gain access the top of trans. Swap the park brake #7 and different lock #8 solenoids they are the same part number. Remember to blow all the dirt off around them so it does not fall down in trans. If your problems goes to different lock circuit then you know it's the solenoid. You can also ohm them and they should be the same resistance when they are unplugged. Depending on how much you use diff View attachment 161948lock you can probably just leave it that way till they both fail
Click to expand...
how on earth do you get the solenoids out???
 
mg2361

mg2361

Senior Member
Joined
Jul 5, 2016
Messages
5,125
Location
Pennsylvania
Occupation
Equipment Mechanic
Welcome to HEF Mimers;)! Next time start your own thread rather than piggy back. You'll get help faster that way. Also make sure to post a serial number when it comes to Deere. Once the little allen screws are removed you may have to grab them with pliers and give a twist to loosen them. First make sure the transmission oil level is good. Low transmission oil can cause the brake to apply intermittently.
 
B

boenjames

Member
Joined
Aug 17, 2021
Messages
8
Location
Indonesia
ASPHALT04 said:
Thanks for info. I know exactly which 2 bolts and the sensor you are talking about.
I just wanted to make sure there was a way to bypass just Incase it acts up while out in traffic. Don’t need to have one lane closed and the other blocked with a non moving backhoe.
Click to expand...
Hi, is unplug the park brake pressure switch your answer? Because im having this problem now on my 310J. Park brake fault 522398 appears, but once i unplug the switch, the park brake fault gone, but its still not moving. Swap the 7 & 8 solenoid, nothing changed. Any idea? I hope someone out there still reading this lol
 
D

Dennis R

New Member
Joined
Mar 31, 2022
Messages
4
Location
hamilton ontario
boenjames said:
Hi, is unplug the park brake pressure switch your answer? Because im having this problem now on my 310J. Park brake fault 522398 appears, but once i unplug the switch, the park brake fault gone, but its still not moving. Swap the 7 & 8 solenoid, nothing changed. Any idea? I hope someone out there still reading this lol
Click to expand...
 
D

Dennis R

New Member
Joined
Mar 31, 2022
Messages
4
Location
hamilton ontario
i have the same problem on my 410j did you find power and ground at the solenoids ,i if you did were does the solenoids get the power or ground from?
 
JL Sargent

JL Sargent

Senior Member
Joined
Jul 15, 2018
Messages
842
Location
Alabama
Dennis, it would be best to start a new thread. Is your transmission oil level correct? Per MG above, that can cause the problem.
 
D

Dennis R

New Member
Joined
Mar 31, 2022
Messages
4
Location
hamilton ontario
good morning .i tried to fine the thread area on this forum, still new to the forum and yes my trans oil is correct ,the problem i am having is i have no signal to the parking break coil.

thanks for the reply
cheers
 
R

Ricardo Cotte

Well-Known Member
Joined
Sep 1, 2022
Messages
48
Location
Puerto Rico
mg2361 said:
Welcome to HEF Mimers;)! Next time start your own thread rather than piggy back. You'll get help faster that way. Also make sure to post a serial number when it comes to Deere. Once the little allen screws are removed you may have to grab them with pliers and give a twist to loosen them. First make sure the transmission oil level is good. Low transmission oil can cause the brake to apply intermittently.
Click to expand...
Hello, just wanted to thank you for your thorough explanation. I was able to fix my 2012 310SJ with this same problem and trouble code. Found out it was way low on transmission oil. Changed the filter and put new oil (I used JD Plus 50 II engine oil) and the problem went away. Thanks much again!
 
You must log in or register to reply here.
Top