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.
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