Removing and installing chain tensioner - RA05001193100X(05-3100)
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:
Right cylinder head cover removed (01-0500) .
Operation no. of operation texts and work units or standard texts and flat rates 05-7800, 7801
| Model 210: air cleaner housing | remove, install. |
| Piston of cylinder 1 | position to 45° before ignition TDC (arrow). |
| Right outlet camshaft | fix in position with pin (01) (arrow) so that the exhaust camshaft does not jump across when timing chain relieved. Special tool 111 589 03 15 00. |
| With mechanical secondary air injection: | slacken poly V-belt and take off from air pump (6) or model 129 with engine 119.960, from generator, fit on (13-3420) . |
| Model 129 with engine 119.960: generator | unbolt, bolt on (15-510). |
| With mechanical secondary air injection: | unbolt air pump (6) and place to the side with piping connected. |
| Models 124, 140 with mechanical secondary air injection: | unbolt bracket (7) of air pump or generator, bolt on (25 Nm). |
| Model 210 with electric secondary air injection: | remove electric air pump together with bracket, install.
NOTE:
Unbolt guide pulley and EGR valve at bracket for this step.
|
| Bolt (8) and nut (9) | slacken, tighten evenly (25 Nm). Engine oil which flows out must not get into the generator. Chain tensioner (4) must not be tilted. |
| Chain tensioner (4) together with gasket (5) | remove, fit on. |
| Gasket (5) | replace. |
| Engine | run and check for leaks. |
TIGHTENING TORQUES IN NM
| Bolt and nut of chain tensioner M8 | 25 |
| Bolts of air pump bracket | 25 |
| Guide pulley to air pump bracket (with electric secondary air injection) | 30 |
Special tools