12. COOLING SYSTEM Downtown 300i ABS
Right Crankcase Cover Water Pump
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.
Telltale Hole Water Pump Cover
Impeller Seal Washer (Porcelain)
WATER PUMP/IMPELLER REMOVAL
Remove the coolant inlet hose and outlet
hose.
Remove four bolts and the water pump
cover, gasket and 2 dowel pins.
Remove the water pump impeller.
The impeller has left hand threads.
Mechanical (Water) Seal
Inspect the mechanical (water) seal and
seal washer if wear or damage.
The mechanical seal and seal washer
must be replace as a set.
Water pump shaft
12-8