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Chapter 10 COOLING SYSTEM
2.11.1 Sea Water Pump Assembled to Engine -
Inspect
With fingers, touch the drain port at pump holder bottom. If
water is oozing out, the unit seal is defective.
Clean the pipe inside with fine stick or the like, in case of
clogging with deposition salt.
Sea Water Pump Assembled to Engine - Inspect
2.11.2 Outside Diameter and Inside Diameter of
Bearing Fit - Inspect
Turn the bearing and if turning is not smooth, replace the bearing with a new one. Inspect the fit of bearing case and bearing. If
heavy wear is found, replace them with new ones. Inspect the fit of shaft and bearing. If heavy wear is found, replace them with
new ones.
　
2.11.3 Drive Gear - Inspect
Inspect the drive gear teeth. Replace the gear if flaking or wear is unusual.
Drain pipe
Item Nominal value Standard value
Inside diameter of case bearing housing ø90 mm [3.54 in.] 89.9825 to 90.0175 mm [3.5430 to 3.5440 in.]
Bearing
outside diameter ø90 mm [3.54 in.] 90.000 to 90.015 mm [3.5430 to 3.5439 in.]
Inside diameter
ø30 mm [1.18 in.] 29.990 to 30.000 mm [1.1807 to 1.1811 in.]
ø40 mm [1.57 in.] 39.988 to 40.000 mm [1.5743 to 1.5748 in.]
Outside diameter of shaft fit to bearing
ø30 mm [1.18 in.] 30.002 to 30.018 mm [1.1810 to 1.1818 in.]
ø40 mm [1.57 in.] 40.002 to 40.018 mm [1.5749 to 1.5755 in.]
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