Might be blurry on details, but as far as I remember the computer stops sending release signal to swing break release solenoid couple of seconds after pressure switch for swing opens the circuit, free swing means computer sends release signal constantly. If you have restriction in swing movement you need to check the current that computer sends to solenoid in normal ( not free swing) mode, and also corresponding pressure to friction break piston. If current too low your swing breaks not releasing fully.
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Tracking problem
- Thread starter Midwayretriever
- Start date
John C.
Senior Member
The swing brake is released instantly whenever any function is used and doesn't reset until everything has stopped being used for at least seven seconds in all the excavators I've worked on. You can plumb a gauge into the swing brake release and watch it work if you suspect a problem.
posrepair2013
Well-Known Member
I learned that truck from an older guy I have done lot of work with super smart guy. It has helped me out in passed and honestly most of the time when u have had issues with slow / weak tracking and after testing and i got it apart almost every seal in manifold is damaged if not missing.
posrepair2013
Well-Known Member
I guess in this situation with one function acting up u could be right.
But it's simply enough test.
But it's simply enough test.
I have nothing against this being center pivot, but I think that pilot test should be done to eliminate that possibility, and it is easy enough, a lot easier then getting center pivot apart.
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Midwayretriever
Well-Known Member
Folks I really appreciate all the help/suggestions so far.
pilot pressure is on my list of things to do first.
On a related note, where can a guy buy a shop manual/maintenance manual for one of these things. Dealer says they don’t have them. Only thing I can come up with is stuff on eBay
pilot pressure is on my list of things to do first.
On a related note, where can a guy buy a shop manual/maintenance manual for one of these things. Dealer says they don’t have them. Only thing I can come up with is stuff on eBay
Midwayretriever
Well-Known Member
I’ve tried the case dealership. They’re about hour away. They swear up and down they can’t help me
as far as the downloading manual goes, can anybody recommend a good source? I’ve seen them advertised, but always leery of scams ect.
as far as the downloading manual goes, can anybody recommend a good source? I’ve seen them advertised, but always leery of scams ect.
What is machines full designation, with all the the letters and dashes?
Midwayretriever
Well-Known Member
330 LX
2006 model
2006 model
Midwayretriever
Well-Known Member
would this test work if blocked the working track, front and rear, with sand? Like chocking tires? Use enough to whet it can’t move? Little hesitant to start wedging stuff between frame/sprocket. Don’t want to tear anything up, or create flying debris. Just thinking out loud ....
All of that is a good recipe for chasing your own tail! Get some plugs and caps, hook pressure gauge, and start plugging capping the components one by one and see after eliminating which component your pressure will jump up to main relief pressure! Start with motors and go backwards.
Midwayretriever
Well-Known Member
Quick update. All pressures checked out normal. On wild ass guess, pulled actuator out of drive motor. There was an internal plunger( no idea what it’s actually called) that was threaded. It fell out on its own. Had markings on it where it had obviously been tightened with Chanel lock pliers at some point. Replaced the oring, threaded it back in, closed everything back up, and problem has been fixed.
would like to say thanks for everybody that offered help/suggestions
would like to say thanks for everybody that offered help/suggestions