103
Cooling system
Sea water pump, recondition-
ing (20A-07)
Applies to MD22L-B, MD22P-B, TMD22-B,
TMD22P-C, TAMD22P-B
1
Remove the pump, operation 20A-06.
2
Remove the end cover (A1) and the gasket (A5).
3
Remove the rubber plug (A2) from the end of the
impeller (A3).
4
Carefully remove the impeller from the shaft (A11)
using a suitable lever or long nose pliers.
5
Remove the snap ring (A10) and press out the shaft
and the bearing unit from the drive side of the hous-
ing using a suitable adapter.
6
Slacken off the cam plate screw (A6) two or three
turns and tap gently on the screw head to detach
the cam plate (A4) from the housing. Remove the
screw and the cam plate.
7
Remove the stuffing box (A7) from the housing.
8
Check the components for wear or other damage
and replace as necessary.
9
Check that all the components are clean.
10
Press the bearing (A9) on the shaft (A11). The bear-
ings are permanently lubricated.
11
Press the stuffing box (A7) into position in the bear-
ing housing. Lubricate the sealing lip a little.
12
Support the pump by the end of the cover and press
the shaft and bearing unit into the bearing housing.
Install the snap ring (A10).
13
Slide the O-ring (A8) up on the shaft until it is locat-
ed in the middle of the space between the bearing
housing and the impeller housing.
14
Apply a suitable sealant on the top and side of the
cam plate (A4). Also apply sealant on the thread of
the cam plate screw (A6). Install the cam plate and
tighten the screw.
15
Grease the blades of the impeller (A3) and install it
on the shaft using a clockwise movement. If the
blades are slightly worn, the impeller may be in-
stalled with its original front side facing to the rear.
Install the rubber plug (A2) in the end of the impel-
ler.
16
Use a new gasket (A5). Install the gasket, end cov-
er (A1) and screws. Tighten the screws evenly in
stages.
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