Testing and setting the vacuum control valve - ra07016021826x(1826)
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.
Engines 602.96, 603.96/97 TURBO
Preceding work:
Operation no. of operation texts and work units or standard texts and flat rates: 07-1826
Test conditions:
Run engine up to normal operating temperature (approx. 80 °C coolant temperature).
Accelerator control correctly set (30-300).
| Testing vacuum control valve | connect vacuum tester (019) to damper (72) of vacuum line and read off vacuum at idling speed. Specification: Engine 602, 420 ± 25 mbar Engine 603, 385 ± 25 mbar |
| When engine is switched off, move accelerator control to full-load stop. Specification: 0 mbar, it may be necessary to set vacuum control valve. Test vacuum lines, test vacuum pump, renew vacuum control valve. | |
| Setting vacuum control valve | slacken fastening bolts (65c), run at full throttle until control lever of injection pump is resting against full-load stop. Turn vacuum control valve (65) in direction of arrow until a resistance is felt. Tighten vacuum control valve in this position. |
| Vacuum control valve | replace (27-140) . |
Special tool
Engines 602.962, 603.960/963/971
Vacuum control valve modified, seal integrated.
PRODUCTION BREAKPOINT: AS OF NOVEMBER 1993
| Model | Engine | Engine end no. Automatic transmission |
|---|---|---|
| 124.128/188 | 602.962 | 019269 |
| 124.133/193 | 603.960 | 049904 |
| 124.333/393 | 603.963 | 004244 |
| 140.134 | 603.971 | 008156 |
Engines 602.962, 603.960/963/971
Vacuum control valve modified, restrictor integrated in vacuum control valve.
PRODUCTION BREAKPOINT: AS OF JUNE 1994
| Model | Engine | Engine end no. Manual transmission | Engine end no. Automatic transmission |
|---|---|---|---|
| 124.128/188 | 602.962 | 032105 | 020045 |
| 124.133/193 | 603.960 | - | 052278 |
| 124.333/393 | 603.963 | - | 004444 |
| 140.134 | 603.971 | - | 012107 |