Inspection Of Water Pump - TOHATSU MX 50D2 Service Manual

Lower Unit
1
4
X50
1
6-32
3
2
OBM OBM
OBM
WX50
1
3
2

8) Inspection of Water Pump

Check pump case liner 1 and guide plate 2 for
1.
deformation and wear.
Replace if necessary.
Check pump impeller 3 for crack, damage and wear.
2.
Replace if necessary.
· The impeller may show gloss or have melted
area if it is rotated with insufficient water.
· Even if impeller shows no abnormality on its
surface, the blade(s) may be separated from the
hub.
· Replace guide plate if a groove(s) of 0.5 mm or
over is produced on it due to wear by impeller.
Check impeller key 4 and key groove for wear.
3.
Replace if necessary.
9) Inspection of Water Pipe
Remove water pipe 1 from drive shaft housing.
1.
Refer to 7-24 ~ 7-28.
Check water pipe 1 for corrosion, deformation and
2.
stuffing.
· For MWX50 ;
Extension water pipe 2 and joint hose 3 are in
the extension housing. Refer to 7-40
"Assembling Extension Housing" and inspection
and assembly.
GB
2st 50D2 2011