Water pump - Mitsubishi K3A / K3B / K3D / K3E / K4C / K4D / K4E / K4F / K4N / S3L / S3L2 / S4L / S4L2

Water pump for tractors (pump without nozzle with plug) of the Mitsubishi brand Mitsubishi MT170, Mitsubishi MT180, Mitsubishi MT190D, Mitsubishi MT210, Mitsubishi MT470, Mitsubishi MT1401, Mitsubishi MT1601, Mitsubishi MT1801, Mitsubishi MT2001, Mitsubishi MT2201, Mitsubishi MT2300, Mitsubishi MT2501 series with engines Mitsubishi K3A, Mitsubishi K3B, Mitsubishi K3D, Mitsubishi K3E, Mitsubishi K4C, Mitsubishi K4D, Mitsubishi K4E , Mitsubishi K4F, Mitsubishi K4N, Mitsubishi S3L, Mitsubishi S3L2, Mitsubishi S4L, Mitsubishi S4L2 and others.

The water pump, the radiator coolant, is one of the most important elements of the engine cooling system and this method of cooling is commonly called water cooling . The engine block and the engine head are elements that heat up to very high temperatures during operation and it is these that we want to cool with the coolant during operation. Special water channels are bored in the engine and the head for the circulation of water, which, in order to be re-injected into the engine water channels. The circulation of the coolant is possible thanks to the water pump , which is most often placed between the radiator and the engine and is driven by a V-belt from the alternator. To the pump flywheel, we screw in the following order the belt pulley, and then the radiator fan, which rotates together with the belt pulley, providing the air movement needed to cool the radiator during engine operation.

Dimensions :

• height: 120mm,
• total length: 180 mm,
• flywheel diameter: 60 mm,
• wheel bolt hole spacing: 45 mm (measured diagonally), 32 mm (measured apart),
• nozzle diameter: external: 29.50 mm (IN), 35 mm (OUT),
• the spacing of the holes for the pump mounting screws is clearly visible in the photo,
• reference numbers: 39205368 , MM43324, MM405405, MM409301 ,
• part numbers: MM409303,
• gasket included with the pump,
• pump without nozzle with cap.

The most common problems and faults of the water pump are the bearing seizure , which is subjected to high rotational speeds and because the elements that directly cooperate with the pump, such as the pulley and the fan, which are not always properly balanced. Too tight a belt , worn belt , too loose V-belt, V-belt installed at the wrong angle , poor lubrication or lack of lubrication are other causes that cause water pump damage. The first signs of water pump damage or signs of improper operation are an unusual sound from under the hood, a coolant stain under the tractor or temperature jumps visible on the dashboard gauges.

Magazine: M01:M26

*Photos are for illustrative purposes only and may differ in detail from the delivered product due to differences in production over the years.