6.
Remove the impeller from the shaft with puller 9101 93200 in 66- and 74-engines or according to the
next instruction in other engines.
7.
Remove the impeller from the shaft.
a) Remove the circlip from the pump body.
b) Press the shaft together with the bearings pointing in the direction of the fan.
Use a hydraulic press, for example.
Support the pump body so that the bearings have enough space to release.
8.
Tap out the water seal using a drift.
9.
Clean the parts and inspect their condition.
Replace faulty or worn parts with new ones.
NOTE: If the pump bearings have to be changed, use a reconditioning kit. This kit also contains all the
seals (see Parts Catalogue).
10.
Put the bearings and the intermediate sleeve onto the shaft.
a) Grease the bearings with heat-resistant ball bearing grease (NLGI 2).
b) Fit the shaft and the bearings in such a way that the ball bearings do not transmit the pressure.
c) Fit the circlip on the bearing.
11.
Fit the water seal with drift 9201 97870 (1).
Use coolant as a "lubricating liquid" between
the shaft and the seal.
Fig. 86
(1) Drift 9201 97870
12.
Press the impeller into position while, at the
same time, supporting the shaft at the other
end.
a) See the mounting depth of the impeller
(dimension A) in the table.
b) Make sure that the shaft can rotate freely.
Impeller mounting dimensions
Diameter of the
impeller (mm)
Dimension A (mm)
97 25,5 ± 0,2
120 8 ± 0,2
130 27,4 ± 0,2
156 30,4 ± 0,2
Fig. 87
3. Maintenance
4th Generation Engines 3-53
8370 79492
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