Basic instructions for disassembling and assembling the D-245E3 water pump
Disassembling the water pump
Remove the pump from the engine.
Unscrew nut 9 (Figure 1) securing the water pump drive pulley.
Using a puller, remove pulley 7 of the water pump.
Remove ring 12 from the pump housing, which locks the bearing assembly.
Remove plug 10 from the end of the impeller 3, remove the impeller from the pump shaft 2 using the threaded hole in the end of the impeller (M18x1.5) using a special bolt.
Press the shaft with bearings out of the water pump housing.
The direction of pressing out is towards the installation of the pulley.
Compress the bearings from the shaft.
Remove thrust ring 13.
Press the oil seal out of the pump housing.
Defect the parts.
Disassembling the water pump with an electromagnetic fan clutch
Disconnect plug connector 13 (Figure 2) and remove the pump from the diesel engine.
Remove cap 7, unscrew nut 8 (left-hand thread), remove washer 9 and fan housing 10.
Using a puller, remove pulley 11 and electromagnet with flange 12.
Remove the locking screw 3 from the water pump housing.
Remove plug 4 from the end of the impeller 5 and remove the impeller from the pump shaft using the threaded hole in the end of the impeller (M18x1.5) using a special bolt.
Press the bearing shaft out of the water pump housing.
The direction of pressing out is indicated in the figure.
Press seal 6 out of the water pump housing.
Disassembling a water pump with a viscous fan coupling
Unscrew the bolts 3 (Figure 3) securing spacer 2 with fan 1 to pulley 7 (Figure 3) of the water pump.
Note: if it is necessary to replace the viscous coupling of the fan drive, hold spacer 2 and unscrew the coupling with the fan using the key S = 32 (left thread), and then unscrew the four bolts 8 (Figure 5) securing the coupling to the fan.
Unscrew nut 9 (Figure 1) securing pulley 7.
Using a puller, remove pulley 7 of the water pump, remove key 8.
Remove ring 12 from the pump housing, which locks the bearing assembly.
Remove plug 10 from the end of the impeller 3, remove the impeller from the pump shaft 2 using the threaded hole in the end of the impeller (M18x1.5) using a special bolt.
Press the shaft with bearings out of the water pump housing. The direction of pressing out is towards the installation of the pulley.
Compress the bearings from the shaft.
Remove thrust ring 13.
Press the oil seal out of the pump housing.
Defect the parts.
Assembling the water pump
Install thrust ring 13 on the pump shaft, press on the bearings.
Fill the bearings and bearing cavity with Litol 24-ML and 4/12-3 lubricant in the amount of 45 grams
Press the shaft with bearings into the pump housing.
Install ring 12 that locks the bearing assembly.
Install the pump pulley, washer and nut. Tighten the nut, ensuring a torque value of 120-140 Nm.
Using a mandrel, press the water pump seal 4 with the inner housing onto the water pump shaft and, at the same time, press the outer seal housing into the water pump housing until the seal housing flange stops against the mating surface of the pump housing.
In this case, the design of the mandrel must ensure that the inner seal casing is pressed in such that the end surface of the inner casing is located at a distance of 11.2±0.2 mm from the mating surface of the pump casing.
Press the impeller onto the shaft, install the plug into the end of the impeller.
The recessing of the end of the impeller relative to the mating plane of the pump housing should not exceed 0.3 mm; protrusion of the impeller is not allowed.
Install the water pump on the diesel.
Attach the fan spacer to the water pump pulley or fan.
Assembling a water pump with an electromagnetic fan clutch
Press the bearing shaft into the pump housing so that the holes for the locking screw in the bearing housing and the water pump housing are aligned.
Tighten the locking screw.
Through the mandrel (Figure 4), press the water pump seal with the inner housing onto the water pump shaft and, at the same time, press the outer seal housing into the water pump housing until the seal housing flange stops against the mating surface of the pump housing.
In this case, the design of the mandrel must ensure that the inner seal casing is pressed in such a way that the end surface of the inner casing is located at a distance of 11.2±0.2 mm from the mating surface of the pump casing (the installation dimension is indicated in Figure 1).
Press the impeller onto the shaft. The recess of the end of the impeller relative to the mating plane of the pump housing should not exceed 0.3 mm; protrusion of the impeller is not allowed.
Install a plug at the end of the impeller.
Press an electromagnet with a flange onto the pump body (The outer diameter of the mandrel during pressing should not exceed the diameter of the flange hub).
Press the pulley onto the shaft.
Install the fan housing and washer onto the shaft.
Tighten the nut (left thread), ensuring a torque value of 120-140 Nm and install the cap.
Install the water pump on the diesel engine and connect the plug connector.
