SAAB WIS ONLINE

INSPECTION

INSPECTION

Check the water pump bearing for smooth rotation.

Check the water pump pulley for abnormalities.

Using a dial gauge, measure the impeller runout in thrust direction while rotating the pulley.

“Thrust” runout limit:

0.5 mm (0.020 in)


Check the clearance between impeller and pump case.

Clearance between impeller and pump case:

Standard

0.5 — 0.7 mm (0.020 — 0.028 in)


After water pump installation, check the pulley shaft for engine coolant leaks. If leaks are noted, replace the water pump assembly.