Hi all, any ideas will be greatly appreciated! My right side track started periodically locking up on me. Only when tracking forward. It will sometimes slightly hang up then let free with no light. If I’m too slow to let off the joystick or it just decides to really grab, it will throw a flashing red exclamation mark and turn the parking brake on. This morning it did it a couple times once I rolled the knob up to increase my speed to 2.2 or so. So I just tracked to my work area at the set 1.7. No problems. Then I ran for 6 hours at higher speeds and everything. All of a sudden it starts doing it again periodically and has gotten worse. I can barely move forward before it does it now. I’m fairly mechanically inclined but new to the dozer world so I don’t know much about what to look for. It seems it could be electrical, hydraulic, or mechanical. Where do I start??
-
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!
Nige
Senior Member
A Serial Number is always a good start........
Next would be to look for Diagnostic Codes, that's why a S/N is useful to locate the "how to" for that particular model. The flashing indicator and park brake engagement is a sign that something electronic is likely playing up intermittently.
Nige
Senior Member
There is nothing I can see that shows how to find any Diagnostic Codes other than using Cat ET and a laptop/comms adapter.
The only thing I can suggest that you try is to see if you can get into the Service menu. You do that by pressing & holding the Mode & Scroll buttons (17 & 18) for 3 seconds. Unfortunately I don't see a "tree" showing what parameters are in the Service Menu as there is for the Operator Menu. Poke around and see what you come up with.
The only thing I can suggest that you try is to see if you can get into the Service menu. You do that by pressing & holding the Mode & Scroll buttons (17 & 18) for 3 seconds. Unfortunately I don't see a "tree" showing what parameters are in the Service Menu as there is for the Operator Menu. Poke around and see what you come up with.
Nige
Senior Member
Last ones first. 466-7524 & 494-4834 are both software Part Numbers.
Of the others, was there any indication as the list scrolled through to indicate if the displayed Codes were Active or Logged..? (Logged Codes are from times past, Active Codes are active right now)
3397-09 relates to the DPF soot loading sensor.
1934-05 & -06 relates to the solenoid for the RH blade angling.
E361-2 & -3 are related to high coolant temperature.
E569-2 is "Unexpected Left Motor Reverse Speed Detected"
E1014-2 is related to the DPF filter.
There is a troubleshooting procedure for E569 (Uncommanded Motion Detected) but from what I can see it requires dealer-level capability to be able to perform it. Sorry.
Of the others, was there any indication as the list scrolled through to indicate if the displayed Codes were Active or Logged..? (Logged Codes are from times past, Active Codes are active right now)
3397-09 relates to the DPF soot loading sensor.
1934-05 & -06 relates to the solenoid for the RH blade angling.
E361-2 & -3 are related to high coolant temperature.
E569-2 is "Unexpected Left Motor Reverse Speed Detected"
E1014-2 is related to the DPF filter.
There is a troubleshooting procedure for E569 (Uncommanded Motion Detected) but from what I can see it requires dealer-level capability to be able to perform it. Sorry.
That’s about right. There’s no distinction as to what’s active that I can tell. Even if I make the problem happen then look at the codes it shows the 3397-09 first. The 569 is the only new code since it was at the dealer last week for a different problem. Trying to avoid going to them again already. Are there some type of speed sensors or something for each track motor that I could swap to see if the problem follows? Could it be the joystick? I know a guy with the same model dozer and he has said my joystick doesn’t feel right. Like it’s worn out. I don’t know if that would produce this problem though.
Nige
Senior Member
Interesting if you read the attachment I posted above it lists the following possible causes for an E569 Event, it does not mention either a speed sensor or the joystick as a possible root cause........only mentions travel pressure sensor or temperature sensor, and you don't have Diagnostic Codes for either of them.
Causes of a UCMD Event
Pump Stuck at Maximum Displacement – The motor speed will always be running at the cross-over gear ratio when commanding a speed in the pump range. If the automatic track speed override is ON, one track will not come to a complete stop and the machine will pivot steer when commanded to stop.
Pump Stuck at Minimum Displacement - The motor does not move when commanding a speed. If the automatic track speed override is ON, one track will not move and the machine will pivot steer when commanded to move forward or rearward.
Motor Stuck at Maximum Displacement – The motor speed will not go above cross-over gear ratio when commanding a speed in the motor range. If the automatic track speed override is ON, one track will travel too fast and the machine will drift severely.
Motor Stuck at Minimum Displacement – The motor speed is always too high as compared to the desired speed. If the automatic track speed override is ON, one track will travel too fast and the machine will drift severely.
Pressure Sensor – If travel pressure diagnostic active, pressure defaults to low pressure. Could have false diagnostic while turning.
Temperature Sensor – If there is a temperature sensor diagnostic, high temperature is assumed which could falsely diagnose event if transmission oil is cold (below 0 °C (32 °F)).
Causes of a UCMD Event
Pump Stuck at Maximum Displacement – The motor speed will always be running at the cross-over gear ratio when commanding a speed in the pump range. If the automatic track speed override is ON, one track will not come to a complete stop and the machine will pivot steer when commanded to stop.
Pump Stuck at Minimum Displacement - The motor does not move when commanding a speed. If the automatic track speed override is ON, one track will not move and the machine will pivot steer when commanded to move forward or rearward.
Motor Stuck at Maximum Displacement – The motor speed will not go above cross-over gear ratio when commanding a speed in the motor range. If the automatic track speed override is ON, one track will travel too fast and the machine will drift severely.
Motor Stuck at Minimum Displacement – The motor speed is always too high as compared to the desired speed. If the automatic track speed override is ON, one track will travel too fast and the machine will drift severely.
Pressure Sensor – If travel pressure diagnostic active, pressure defaults to low pressure. Could have false diagnostic while turning.
Temperature Sensor – If there is a temperature sensor diagnostic, high temperature is assumed which could falsely diagnose event if transmission oil is cold (below 0 °C (32 °F)).
Last edited:
Thanks for all your help. I swapped the speed sensors and it went from right track locking up going forward to left track locking up in reverse. So I replaced the one I had in the left side. Ended up being the opposite one. So I’m back running!
Again, thank you for your time, really!
Again, thank you for your time, really!
Nige
Senior Member
Weird how a speed sensor that wasn't funcitoning at 100% was not generating anything in the way of a diagnostic code. File that one away for the future.......
Let me see if I understand you correctly. Although your original symptoms were that the right track was locking up when tracking forward the problem was resolved by replacing the speed sensor that was originally installed in the LH side of the tractor (before you started switching them around). Is that right..?
Let me see if I understand you correctly. Although your original symptoms were that the right track was locking up when tracking forward the problem was resolved by replacing the speed sensor that was originally installed in the LH side of the tractor (before you started switching them around). Is that right..?
Nige
Senior Member
Here's what I think, and my assumption is based on the E569 Event - Unexpected Left Motor Reverse Speed Detected.
Let's assume that when the LH track speed was zero the sensor that you replaced was in fact giving a signal indicating that the LH track was moving in reverse but the tractor was not moving. That's what generates the E569 Event.
This would be a signal that was within the "normal" range (max forward speed -> zero -> max reverse speed). So there would be no Diagnostic Code for a defective sensor because there was nothing electronically abnormal about the signal it was giving, despite it being incorrect. Another instance of electronics not being as smart as they are given credit for. It's where ET comes in very useful because the sensor signals can be viewed in real time on the laptop screen. The negative ground speed signal from the LH track would've been obvious.
Let's assume that when the LH track speed was zero the sensor that you replaced was in fact giving a signal indicating that the LH track was moving in reverse but the tractor was not moving. That's what generates the E569 Event.
This would be a signal that was within the "normal" range (max forward speed -> zero -> max reverse speed). So there would be no Diagnostic Code for a defective sensor because there was nothing electronically abnormal about the signal it was giving, despite it being incorrect. Another instance of electronics not being as smart as they are given credit for. It's where ET comes in very useful because the sensor signals can be viewed in real time on the laptop screen. The negative ground speed signal from the LH track would've been obvious.
mks
Well-Known Member
Nige, thanks for all you do.
Interesting thread lads.
I had a hired in D6K a few years ago that was acting up like your D5.O reported it to the chap I hired it off,but he wasn’t interested.
I couldn’t figure it out from the saddle at all.I dug the tracks out and checked all the eq bar bushings to see if there was something throwing things off kilter.
Nowt could be found,so I put it back to work and a few days later it started acting the goat again,but no faults showing in the cab.I got the same reply as my previous call to them.‘There’s nothing showing up here in the product support link,so there’s nowt up with it’.
I felt a right chump to be honest and wondered if I was dreaming it up.Eitherway,I off hired the thing and made do with my own D5H.
That D6K worked on another part of the site for 3 months and never gave more bother.
Then one day,something let go in the entire transmission bevel casing and the bill ran into tens of thousands.
Was it all connected? I really don’t know,but I’m glad you’ve got your D5 fixed
I had a hired in D6K a few years ago that was acting up like your D5.O reported it to the chap I hired it off,but he wasn’t interested.
I couldn’t figure it out from the saddle at all.I dug the tracks out and checked all the eq bar bushings to see if there was something throwing things off kilter.
Nowt could be found,so I put it back to work and a few days later it started acting the goat again,but no faults showing in the cab.I got the same reply as my previous call to them.‘There’s nothing showing up here in the product support link,so there’s nowt up with it’.
I felt a right chump to be honest and wondered if I was dreaming it up.Eitherway,I off hired the thing and made do with my own D5H.
That D6K worked on another part of the site for 3 months and never gave more bother.
Then one day,something let go in the entire transmission bevel casing and the bill ran into tens of thousands.
Was it all connected? I really don’t know,but I’m glad you’ve got your D5 fixed
ih100
Senior Member
That’s an interesting one, Nicky. I think probably a hub reduction or drive motor let go, K’s don’t have a bevel casing. K’s can be a pain if they aren’t calibrated properly. If they’re set up IMO they’re a good mount. Spent a lot of time in them battering.
I’m not sure what was under the seat with all its innards,but it was a good tractor