Hi Peter,
The UG3/40 had been constructed for higher torque than the UG2 generation, but the MBtrac 1500 had more torque. So You cannot reason stronger gear = longer life. On the other side, 13.000hours must not mean that life is over for a 443.
Wolfgang just said it right:
You wrote the tractor was "meticulously maintained". So check it!
When the tractor passes some simple tests, You may be somewhat sure about its condition.
Does the gear switch to every stage without any problems?
When You choose a stage in the gear, does it stay there in any case?
Such as load changes, steep climb, steep incline.
Check the backlash in axles and steering.
Check the Cardan cross links.
What about oil pressure in different cases?
Pressure at engine idle speed, cold engine
Pressure at engine idle speed, warm engine
Pressure at about 1.700/min, warm engine
What about oil consumption at a time of maybe 10 hours of use?
Able to Check Cylinder compression ratio in all 6 cylinders? (Because of the hidden nozzles a little bit complicated in an OM352A...)
Does the engine smoke in different colours?
Grey, when started cold? (check fuel injection system, especially nozzle)
Blue, in any case or especially after a longer time of partial load (an indicator for worn piston rings, valve rods...
NOTE! The engines of MBtrac do not have sealed valve shafts, so a little bit blue exhaust gas is quite normal!
White (defects in cooling system with contact to the combustion)
Black (wrong calibrated fuel injection system, worn nozzles, wrong injection timing).
Search for strange noises in engine, gear and axles...
An MBtrac 1500 in good condition might be ok for that price.
Good luck and greetings
Holger
The UG3/40 had been constructed for higher torque than the UG2 generation, but the MBtrac 1500 had more torque. So You cannot reason stronger gear = longer life. On the other side, 13.000hours must not mean that life is over for a 443.
Wolfgang just said it right:
(16.01.2011, 14:43)wolli schrieb: It also depends on the work that the trac has done in the last 13000 hours. If it was only light work as you said, then it shouldn't be a huge problem.
You wrote the tractor was "meticulously maintained". So check it!
When the tractor passes some simple tests, You may be somewhat sure about its condition.
Does the gear switch to every stage without any problems?
When You choose a stage in the gear, does it stay there in any case?
Such as load changes, steep climb, steep incline.
Check the backlash in axles and steering.
Check the Cardan cross links.
What about oil pressure in different cases?
Pressure at engine idle speed, cold engine
Pressure at engine idle speed, warm engine
Pressure at about 1.700/min, warm engine
What about oil consumption at a time of maybe 10 hours of use?
Able to Check Cylinder compression ratio in all 6 cylinders? (Because of the hidden nozzles a little bit complicated in an OM352A...)
Does the engine smoke in different colours?
Grey, when started cold? (check fuel injection system, especially nozzle)
Blue, in any case or especially after a longer time of partial load (an indicator for worn piston rings, valve rods...
NOTE! The engines of MBtrac do not have sealed valve shafts, so a little bit blue exhaust gas is quite normal!
White (defects in cooling system with contact to the combustion)
Black (wrong calibrated fuel injection system, worn nozzles, wrong injection timing).
Search for strange noises in engine, gear and axles...
An MBtrac 1500 in good condition might be ok for that price.
Good luck and greetings
Holger
406.120 '72, 440.161 '75, 440.167 '83
Die 3 MBtrac-Grundsätze:
1.) Ein MBtrac ist zwar nicht alles, aber ohne MBtrac ist alles nichts!
woraus folgt:
2.) Ein Leben ohne MBtrac ist möglich - aber sinnlos...
doch zum Glück für die vielen Nicht MBtrac Besitzer:
3.) Nur wer einen MBtrac besitzt, weiß, was allen anderen fehlt...