Thermostat And Water Pump - wsm STW37 Workshop Manual

STW34, STW37, STW40, WSM

(5) Thermostat and Water Pump

CAUTION
• When removing the radiator cap, wait at least ten minutes after the engine has stopped and cooled down.
Otherwise, hot water way gush out, scalding nearby people.
Thermostat Assembly
1. Remove the thermostat cover mounting screws, and remove
the thermostat cover (1).
2. Remove the thermostat assembly (3).
(1) Thermostat Cover
(2) Thermostat Cover Gasket
Water Pump Assembly
1. Loosen the alternator mounting bolts, and remove the fan belt.
2. Remove the fan and fan pulley.
3. Remove the water pump assembly from the gear case cover.
4. Remove the water pump flange (1).
5. Press out the water pump shaft (2) with the impeller (5) on it.
6. Remove the impeller from the water pump shaft (2).
7. Remove the mechanical seal (4).
(When reassembling)
• Apply a liquid gasket (Three Bond 1217H or equivalent) to the
both sides of gasket.
• Replace the mechanical seal with new one.
(1) Water Pump Flange
(2) Water Pump Shaft
(3) Water Pump Body
1-S62
ENGINE
9Y1211109ENS0089US0
(3) Thermostat Assembly
9Y1211109ENS0090US0
(4) Mechanical Seal
(5) Impeller
9Y1211109ENS0091US0
KiSC issued 11, 2014 A