Mitsubishi S12A2 - Impeller Removal; Water Pump for Air Cooler Cooling - Disassembling and Inspection; Water Pump Shaft Removal

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Chapter 10 COOLING SYSTEM
2.11.1 Water pump for Air cooler Cooling Mounted on
Engine - Inspect
Touch the drain port at the bottom center of water pump
case with a finger.If water or oil is oozing out, the unit seal
is defective.
Water pump for Air cooler Cooling Mounted on Engine
- Inspect
2.11.2 Impeller - Remove
Install a puller to impeller pull-out holes, and remove the
impeller.
Impeller - Remove
2.11.3 Water pump Shaft - Remove
Remove the shaft and ball bearings as a set by pushing the
impeller end face of water pump shaft with hand press or the
like.
Water pump Shaft - Remove
Puller
M8 × 1.25 mm
Impeller
Water pump
shaft
Ball bearing
Ball bearing
Impeller side