Hi all,
I have a 3120 with 480 hours, cutting grass Saturday afternoon with the cruise control on, the tractor speedometer started to go a little crazy, I was on the flattest part of the yard, cruise was set at 5 MPH middle gear range at full PTO RPM's was getting readings +/- .3 and felt the surging. The RPM on the engine didn't drop, no smoke what so ever didn't feel like it was engine related. The surging wasn't effected by turning the motion match on or off.
All fluids from the hydro are clear and clean except for the engine oil, was changes approx 50 hours ago. No water in the fuel separator. Did a complete hydro oil and filter changed about 75 hours ago.
Sunday I checked the battery and grounding leads clean and very tight, battery is about 3 years old appeared fine. Didn't check the alternator output tractor starts like it has since I've owned it, couple revolution and fire right up, all lights work as usual.
The thing I find odd is no engine codes and no surging during testing Sunday, she ran great. I can get the engine to pull a code like stepping on both for/rev pedals at the same time so I know the computer works or the light works and shows a code on the read out.
I'm stumped what do you guys think?
Malvern
I have a 3120 with 480 hours, cutting grass Saturday afternoon with the cruise control on, the tractor speedometer started to go a little crazy, I was on the flattest part of the yard, cruise was set at 5 MPH middle gear range at full PTO RPM's was getting readings +/- .3 and felt the surging. The RPM on the engine didn't drop, no smoke what so ever didn't feel like it was engine related. The surging wasn't effected by turning the motion match on or off.
All fluids from the hydro are clear and clean except for the engine oil, was changes approx 50 hours ago. No water in the fuel separator. Did a complete hydro oil and filter changed about 75 hours ago.
Sunday I checked the battery and grounding leads clean and very tight, battery is about 3 years old appeared fine. Didn't check the alternator output tractor starts like it has since I've owned it, couple revolution and fire right up, all lights work as usual.
The thing I find odd is no engine codes and no surging during testing Sunday, she ran great. I can get the engine to pull a code like stepping on both for/rev pedals at the same time so I know the computer works or the light works and shows a code on the read out.
I'm stumped what do you guys think?
Malvern