12. COOLING SYSTEM MXU 300/250
WATER PUMP
MECHANICAL SEAL (WATER SEAL)
INSPECTION
Inspect the telltale hole for signs of
mechanical seal coolant leakage.
If the mechanical seal is leaking, remove
the right crankcase cover and replace the
mechanical seal.
Water Pump Telltale Hole
Water Pump Cover
WATER PUMP/IMPELLER
REMOVAL
Drain the coolant. (page 12-7)
Loosen the screw and disconnect the
coolant inlet hose.
Remove the four bolts and the water pump
cover.
Bolts Inlet Hose
Water Pump Impeller Gasket
Remove the gasket and 2 dowel pins
Remove the water pump impeller, washer
and seal washer (porcelain).
The impeller has left hand threads.
Dowel Pins
12-9