Water Pump Checking Water Pump
Fig.3-8
Check the water pump for leaks and excessive play or looseness of the shaft and bearings. If there is evidence of excessive play when the fan blades are manually moved up and down, it shows that the bearings are rough. If water leaks from the hole located on the pump body, it indicates defective seal necessitating overhaul of the pump.
Fig.3-7
Starts to open
82° L 1.5°C (180° L 2.7°F)
Fully opens at
95°C (203°F)
Lift
8 mm (0.315 in) or more
Removing Water Pump
Installing Thermostat Follow the removal procedure in the reverse order. Fill the cooling system. Operate the engine and check for leaks.
Fig.3-9 (1) Bolt/washer. (2) Cooling fan. (3) “V”belt. (4) Pulley (5) Nut/washer. (6) Water pump. (7) Gasket.
After draining cooling system, remove the water pump following the order numbered in Fig. 3-9.
D430 Diesel Engine
35
Cooling System
