YM1610d thermostat

[jaybird4]

My recently purchased 1610d's thermostat reads touching the lefthand side of the cold mark when first started. After 30 minutes of heavy 6' finish mowing it reads touching the righthand side of the cold mark. Does the 1610d have a thermostat and could it either be stuck open or possibly could it have been removed? Is there a problem with running a diesel at that low of a temperature? Thanks in advance for any suggestions.

 

[jaybird4]

My recently purchased 1610d's thermostat reads touching the lefthand side of the cold mark when first started. After 30 minutes of heavy 6' finish mowing it reads touching the righthand side of the cold mark. Does the 1610d have a thermostat and could it either be stuck open or possibly could it have been removed? Is there a problem with running a diesel at that low of a temperature? Thanks in advance for any suggestions.

 

[mark777]

I'm pretty sure you don't have a thermostat. I've never seen one on the 3T75U engines. If the engine and radiator seem warm to the touch then I would suggest testing or replacing the sending unit.

 

[mark777]

I'm pretty sure you don't have a thermostat. I've never seen one on the 3T75U engines. If the engine and radiator seem warm to the touch then I would suggest testing or replacing the sending unit.

 

[jaybird4]

Mark777, /thanks for the reply. Yes, it does get hot and when I cut the motor off I hear some gurgling sounds coming from the radiator. Where is the sending unit for the thermostat located on a 1610d? How do you test the sending unit? Thanks in advance for any help. Bob

 

[jaybird4]

Mark777, /thanks for the reply. Yes, it does get hot and when I cut the motor off I hear some gurgling sounds coming from the radiator. Where is the sending unit for the thermostat located on a 1610d? How do you test the sending unit? Thanks in advance for any help. Bob

 

[mark777]

jaybird,

The temp sender is threaded into the water pump base top. Remove the wire (with key switched to on) and ground to the engine block. If the light comes "ON" then the wiring and fuse are ok. If the engine is HOT and the light does not come ON when reconnected, then the sending unit is most probably bad.

I would check the belt tension and fan end-play. If you can rock the fan slightly (1/8") then the pump impeller is dragging internally and pump bearing is bad....time for replacement or rebuild. I have had three tractors that needed water pumps, two 1610D's and one 1601D and I believed if was from over tightening the fan belt. If everything checks out O.K. then it is the radiator (Gurgling) and needs to be flushed and checked by a shop plus a new double lip seal radiator cap. Good news is you can brush hog with a 1610 all day long in 90°+ heat and only reach slightly above normal temperatures. You do have to clean the pre-screen in front of the radiator regularly.

Mark

 

[mark777]

jaybird,

The temp sender is threaded into the water pump base top. Remove the wire (with key switched to on) and ground to the engine block. If the light comes "ON" then the wiring and fuse are ok. If the engine is HOT and the light does not come ON when reconnected, then the sending unit is most probably bad.

I would check the belt tension and fan end-play. If you can rock the fan slightly (1/8") then the pump impeller is dragging internally and pump bearing is bad....time for replacement or rebuild. I have had three tractors that needed water pumps, two 1610D's and one 1601D and I believed if was from over tightening the fan belt. If everything checks out O.K. then it is the radiator (Gurgling) and needs to be flushed and checked by a shop plus a new double lip seal radiator cap. Good news is you can brush hog with a 1610 all day long in 90°+ heat and only reach slightly above normal temperatures. You do have to clean the pre-screen in front of the radiator regularly.

Mark

 

[greatrandini]

always let your engine idle slow for about 5 minutes after you work her.......This will cool her down.

 

[greatrandini]

always let your engine idle slow for about 5 minutes after you work her.......This will cool her down.