30
16) Water pump ass'y
Disassembly
(1) Remove the set plate gasket.
NOTE: The pump main body is aluminum die cast
and should be replaced as ass’y if subjected
to water leakage or other troubles.
17) Radiator and reserve tank
Specifications and structure
Structure
Radiator cap of the pressure type (closing-up type) is
employed for better cooling efficiency. When the cooling
water temperature in the radiator rises (pressure also
increases), the pressure valve is pushed open to release
excessive pressure (cooling water) from the overflow pipe
(white arrow) and the water is stored in the reserve tank.
When the cooling water temperature in the radiator
decrease and the internal pressure becomes negative, the
cooling water in the reserve tank is returned into the
radiator. (black arrow)
Specifications
Fin type Corrugated
Cooling water volume
5.1 ℓ (J843), 5.3 ℓ
(N843L)
Pressure valve starting
pressure
0.75 – 1.05 kgf/cm
2
Negative pressure valve
starting pressure
Less than 0.05 kgf/cm
2
Heat radiation volume
28,400 kcal/h
049X
1. Water pump ass’y
2. Gasket
3. Set plate
050X
Inspection
a. Check the radiator, pipe, and reserve tank for water leakage and repair or correct if any.
b. Check the radiator fin and remove dust, mud, or other foreign matter clogging in the air passage, if any.
c. Check the pressure valve and negative pressure valve of the radiator cap for valve opening pressure and sealing
condition. Replace of defective.
d. Check the radiator hose and replace if damaged or aged.
e. If the net is clogged, remove and clean.
f. The cooling water level in the reserve tank should be always between FULL and LOW.
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