So on behalf of a family member, who is technically savvy, he has a 2012 Wacker Neuson 28z3, S/N AG05746, somewhere near 500hours from new.
After about 30/40mins the 28z3 sounds the engine temperature alarm, once i open the engine cover the alarm stops after a minute or two with the engine still running
Diagnostics so far...
1. Blown out the radiator to ensure that it has airflow, radiator fins all in like new condition
2. Verified the radiator fan by verifying that a piece of paper will 'stick' to the radiator thus confirming airflow
3. Removed the thermostat and ran the machine to see if the condition re-occurs, which it does
4. I have confirmed it is a genuine overhead rather than a sensor issue by measuring the temp of the thermostat body when the alarm goes off...saw approx 235deg
5. When removing the thermostat did a visual check of the thermostat housing and inside radiator filler which did show any residue or debris inside the cooling system, it all looked just like new...the coolant was clear and like new
6. The engine cover is in good condition and the front and rear vent's are as designed and not blocked or modified
The hydraulic filter was changed about 20hrs ago, the engine oil and filter changed 5hrs ago, and the air filter is clean. There are no obvious signs of any modification or prior repairs and the machine is fully functional..the machine is I believe 2012 and has 540hrs on it. The typical air temp during these time when the alarm sounds is 80-90deg
I've pondered this and can't seem to figure it out... runs hot till the hood is opened...? WTF
Anyone seen anything similar?
After about 30/40mins the 28z3 sounds the engine temperature alarm, once i open the engine cover the alarm stops after a minute or two with the engine still running
Diagnostics so far...
1. Blown out the radiator to ensure that it has airflow, radiator fins all in like new condition
2. Verified the radiator fan by verifying that a piece of paper will 'stick' to the radiator thus confirming airflow
3. Removed the thermostat and ran the machine to see if the condition re-occurs, which it does
4. I have confirmed it is a genuine overhead rather than a sensor issue by measuring the temp of the thermostat body when the alarm goes off...saw approx 235deg
5. When removing the thermostat did a visual check of the thermostat housing and inside radiator filler which did show any residue or debris inside the cooling system, it all looked just like new...the coolant was clear and like new
6. The engine cover is in good condition and the front and rear vent's are as designed and not blocked or modified
The hydraulic filter was changed about 20hrs ago, the engine oil and filter changed 5hrs ago, and the air filter is clean. There are no obvious signs of any modification or prior repairs and the machine is fully functional..the machine is I believe 2012 and has 540hrs on it. The typical air temp during these time when the alarm sounds is 80-90deg
I've pondered this and can't seem to figure it out... runs hot till the hood is opened...? WTF
Anyone seen anything similar?
Compact overheats until the hood is opened...
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