Bobcat 853 HP7 code trouble shoot

[hmwx853]

I am getting an occasional HP7 Hydraulic Pressure out of range error on a Bobcat 853 that I haven't been able to determine the cause. I've changed filters checked wiring, every thing works fine, no significant leaks.
it seems that I can stop the code/beeping when I use steering so maybe something to do with the drive motors?

 

[ianmcolo]

Does the machine shut down on you? If it does you will need to remove the sensor and install a pressure gauge to confirm pressure. If it does not shut down then the sensor has likely failed.

The only reason I can see steering the machine would cause the code to go away is maybe under a load the hydraulic system creates enough back pressure.

Good luck

 

[hmwx853]

No It

Does the machine shut down on you? If it does you will need to remove the sensor and install a pressure gauge to confirm pressure. If it does not shut down then the sensor has likely failed.

The only reason I can see steering the machine would cause the code to go away is maybe under a load the hydraulic system creates enough back pressure.

Good luck

No, It doesn't shut down. Ill look into a sensor. Thanks

 

[koko]

My T300 does that the odd time but I've confirmed that it is caused by just idling around & working it because it is a low pressure warning. It just gives a warning & then stops, but I usually just give it a bit more throttle. Does yours continue giving the code/beeping?

 

[hmwx853]

My T300 does that the odd time but I've confirmed that it is caused by just idling around & working it because it is a low pressure warning. It just gives a warning & then stops, but I usually just give it a bit more throttle. Does yours continue giving the code/beeping?

In my case it would actually be more prevalent at fast idle and would not alarm often at slowest idle.

 

[hmwx853]

I am getting an occasional HP7 Hydraulic Pressure out of range error on a Bobcat 853 that I haven't been able to determine the cause. I've changed filters checked wiring, every thing works fine, no significant leaks.
it seems that I can stop the code/beeping when I use steering so maybe something to do with the drive motors?

I put on about 12 hours this past weekend and it didn't alarming at all the second day.

Thinking it must be some debris getting held up somewhere.