Sealing coolant pump - RA20001042250X(20-2250)
WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.
Preceding work:
Coolant pump removed (20-2100) .
Operation no. of operation texts and work units or standard texts and flat rates:
| Spiral housing (6) | unbolt, bolt on (10 Nm). |
| O-ring (7) | replace. |
| Puller (14) 000 589 94 33 00 | fit onto impeller (5). |
| Jaws of puller (14) | tension with sleeve inner dia. 40 mm (shop made) or suitable hose-strap. |
| Impeller (5) | pull off. |
| Mating ring (3) | pull off with pliers. |
| Cassette-type seal (4) | press around circumference with screwdriver to remove from coolant pump (1). Do not damage coolant pump (1), use clean cloth as base. |
| Mount for cassette-type seal (4) | clean.
NOTE:
Sealing compound is applied to the circumference of the cassette-type seal (4).
|
| New cassette-type seal (4) | press in with 40 mm diameter sleeve as far as the stop |
| Mating ring (3) | fit onto pump shaft with ground face toward seal (4a). |
| Impeller (5) | heat to approx. 100 °C. |
| Impeller (5) | press on. |
| Size (a) (5.6 - 5.8 mm) | note. |
| Tight seat of impeller (5) on pump shaft | check. |
Special tool