Engine Cooling System — Water Pump (Cont'd) & Thermostat
LC-9prose procedureHot type thermostat (76.5°C / 170°F opening) is for general areas only.
Water Pump (Cont'd)
INSPECTION
Water Pump Inspection
- 1Check for badly rusted or corroded body assembly and vane.
SLC760 - 2Check for rough operation due to excessive end play.SLC760
Thermostat
INSPECTION
Thermostat Inspection
- 1Check for valve seating condition at ordinary temperatures. It should seat tightly.
SLC204A - 2Check valve opening temperature and maximum valve lift.
SLC343 - 3Then check if valve closes at 5°C (9°F) below valve opening temperature.
Thermostat Valve Opening Temperature and Maximum Valve Lift
| Standard | Cold type | Hot type* | |
|---|---|---|---|
| Valve opening temperature °C (°F) | 82 (180) | 88 (190) | 76.5 (170) |
| Max. valve lift mm/°C (in/°F) | 8/95 (0.31/203) | 8/100 (0.31/212) | 8/90 (0.31/194) |
Valve opening temperature °C (°F)
Standard82 (180)
Cold type88 (190)
Hot type*76.5 (170)
Max. valve lift mm/°C (in/°F)
Standard8/95 (0.31/203)
Cold type8/100 (0.31/212)
Hot type*8/90 (0.31/194)
NOTE
*For general areas only
IMPORTANT
After installation, run engine for a few minutes, and check for leaks.
| Specification | Value |
|---|---|
| Thermostat housing bolt torque | 18 - 22N·m |
| Thermostat housing bolt torque | 1.8 - 2.2kg·m |
| Thermostat housing bolt torque | 13 - 16ft·lb |
Thermostat housing bolt torque
18 - 22N·m
Thermostat housing bolt torque
1.8 - 2.2kg·m
Thermostat housing bolt torque
13 - 16ft·lb
Component LocationFig. fig2
Thermostat housing assembly components
SLC204A
1Top side(upper left of thermostat housing)
2Water inlet(left side pipe connection)
3Gasket(between thermostat and housing)
4Thermostat(inside housing)
Component LocationFig. fig3
Thermostat orientation showing jiggle valve position
SLC767
1Upper(top of thermostat with upward arrow)
2Jiggle valve(upper portion of thermostat face)