Shibaura N843, Руководство по ремонту

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109823 2/09 3-15
Water pump assembly and thermostat
Disassembly and inspection
1. Remove the set plate and gasket.
2. Inspect the water pump and replace if cracked, worn,
or damaged.
Note: The pump main body is aluminum die cast
and should be replaced as an assembly if
there are leaks or other problems.
Specification and inspection
Thermostat
1. Replace if the valve is opened slightly at room
temperature.
2. Immerse the thermostat in water, increase the water
temperature gradually and check the valve opening
temperature and valve lift. (See Fig. 3-38)
Note: 3 to 5 minutes are required for the valve to
open.
Reassembly
Reassemble the components in the reverse order of
disassembly.
Radiator
Inspection
1. Check the radiator, hose, and reservoir tank for
water leakage. Repair any damage found.
2. Check the radiator fins and remove dust, mud, or
other foreign material clogging the air passage.
3. Check the pressure valve and negative pressure
valve of the radiator cap for valve opening pressure
and sealing condition. Replace if defective.
4. Check the radiator hose and replace if damaged or
aged.
5. If the screen is clogged, remove and clean.
6. The cooling water level in the reserve tank should be
always between FULL and LOW.
Type Wax pellet
Opening temperature 163.4-170.6°F
(73° - 77°C)
Full-opening temperature 188.6°F(87°C)
Valve lift 0.24 in.(6.0 mm)
Fig. 3-38
Fig. 3-39