Filter
Top Products
4-10 COOLING SYSTEM
Water Pump
Water P ump Removal
•
Refer to the Oil Pump Removal in the Engine Lubrication
System chapter.
Water Pump Installation
•
Refer to the Oil Pump Installation in the Engine Lubrica-
tion System chapter.
Water Pump Inspection
•
Check the drainage outlet passage [A] at the bottom of
the water pump body for coolant leaks.
If the mechanical seal is damaged, the c oolant leaks
through the seal and drains through the passage. Re-
place the mechanical seal unit.
Water Pum p Impeller Disa ssembly/Asse m bly
•
The sealing seat and rubber seal may be removed easily
by hand.
•
Apply coolant around the surfaces of the rubber seal and
sealing seat.
•
Install the rubber seal [A] and sealing seat [B] into the
impeller by pressing them by hand until the seat stops at
the bottom of the hole.
•
Tighten the water pump impeller bolt by special torque.
Torque - Water Pump Impeller Bolt: 9.8 N·m (1.0 kgf·m, 87
in·lb)
Water Pump Impeller Inspection
•
Visually inspect the water pump impeller [A].
If the surface is corroded or if the blades are damaged,
replace the impeller.
Water Pump Housing Disassembly
CAUTION
Do not damage the hole wall of the water pump
housing.
•
Insert a bar [A] into the pump housing [B], and hammer
evenly around the circumference of the mechanical seal
bottom [C].