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ENGINE

125

Fig. 5

Fig. 6

1. HOUSING

2. BACK COVER

3. IMPELLER

4. SHAFT

5. WATERSEAL

6. GREASESEAL

7. TAPE ROLLERBEARING

8. COVER PLATEWITHGREASE SEAL

9. HUB

10. PULLEY

8 Remove insert with its rubber sleeve from

impeller. Fig. 5.

9 Remove water seal from water pump housing.

10 Clean thoroughly and inspect all parts.

ASSEMBLY OF WATER PUMP

Fig. 6

Check condition of insert, rubber sleeve for insert etc.

If necessary, replace.

Inspect water pump housing, shaft, bearings and

impeller for damage and wear. Replace parts, if

necessary.

1 Fit new grease seal (with felt) in water pump

housing.

2 Fit new water seal into housing using drift, 2506

5890 99 02.

3 Fit outer race of inner bearing in water pump

housing using special tool, Part No 312 589 03 39

or 3574 5890 99 04.

4 Apply graphite oil on shaft, slip on slinger on the

shaft and slide it down till it stops on the step of

the shaft.

It is desirable to have a fixture for water pump

assembly. The hole for water pump shaft in the

fixture should be 7.5 mm deep and have 17 mm

dia. The 7.5 mm dim. is extremely important since

it determines the position of the fan hub in relation

to the housing.