Refer to “water pump disassembly and assembly” .
Mechanical seal
Visually inspect the mechanical seal for damage, with particular attention given to the sealing face.
Replace the mechanical seal that shows indications of leakage.

Oil seal
Visually inspect the oil seal for damage, with particular attention given to the lip.
Replace the oil seal that shows indications of leakage.

Seal washer
Visually inspect the seal washer for damage, with particular attention given to the sealing face.
Replace the seal washer that shows indications of leakage.

Impeller / shaft
Visually inspect the impeller and its shaft for damage.
Replace the impeller or shaft if necessary.

Impeller shaft journal
Visually inspect the journal for damage or scratch.
Replace the holder if necessary.

Water pump disassembly and assembly
SpecificationsPiston and piston ring inspection
Refer to “piston ring removal and installation” .
Piston diameter
Measure the piston diameter using the micrometer at 15
mm (0.6 In) “a” from the skirt end. If the piston diameter
is less than the service limit, replace the piston.
Special tool
(a): 09900–20203 (micrometer (50 –
75 mm))
Pis ...
DTC “c23” (p1651-h/l): to sensor circuit
malfunction
Detected condition and possible cause
Detected condition
Possible cause
C23
The sensor voltage should be the
following for 2 sec. And more, after ignition
switch is turned on.
0.2 V ≤ Sensor voltage < 4.8 V
To sensor circuit open or shor ...
Air valve removal and installation
Removal
Remove the wheel assembly. Refer to “front wheel assembly removal and
installation” and “rear wheel assembly removal and installation” .
Remove the tire. Refer to “tire removal and installation” .
Remove the air valve (1) from the wheel.
Installation
Install th ...