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Chapter 10 COOLING SYSTEM
2.9 Water pump - Inspect
Measure the bearing fit diameters of water pump bearing housing and shaft, and the inside and outside diameters of bearing.If
any of the measurements is out of the standard, replace the part with a new one.
Item
Inside diameter of case bearing housing
Outside diameter
Large
Inside diameter
Bearing
Outside diameter
Small
Inside diameter
Outside diameter of shaft fit to bearing
Impeller front clearance
Impeller back clearance
10-30
Nominal value
ø62 mm [2.44 in.]
ø72 mm [2.83 in.]
ø72 mm [2.83 in.]
ø30 mm [1.18 in.]
ø62 mm [2.44 in.]
ø30 mm [1.18 in.]
ø30 mm [1.18 in.]
Standard value
61.988 to 62.018 mm [2.4404 to 2.4416 in.]
71.988 to 72.018 mm [2.8341 to 2.8353 in.]
71.987 to 72.000 mm [2.8341 to 2.8346 in.]
29.988 to 30.000 mm [1.1806 to 1.1811 in.]
61.987 to 62.000 mm [2.4404 to 2.4409 in.]
29.988 to 30.000 mm [1.1806 to 1.1811 in.]
30.002 to 30.011 mm [1.1812 to 1.1815 in.]
0.6 to 1.4 mm [0.0236 to 0.0551 in.]
1.0 mm [0.040 in.]
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