Remove/install piston rings - AR03.10-P-7311AO
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.
ENGINE 120
| Fig. item, etc. | Work instructions | ||
|---|---|---|---|
| Remove pistons | ra03001203160x | ||
| Assign standard size pistons to cylinder bore | AR03.10-P-7021-02AO | ||
| 1, 2, 3 | Piston rings | Measure side clearance | *BE03.10-P-1001-05A *BE03.10-P-1016-02C *BE03.10-P-1017-02C *BE03.10-P-1018-02C |
| 1, 2, 3 | Piston rings | Pay attention to installation position, "top" or manufacturer's designation faces toward piston crown. Insert hook spring (8) in oil scraper ring (3) offset 180° to joint (arrow). |
Fig 2 |
TEST DATA OF PISTON RINGS
| Number | Designation | Engine 120 | ||
|---|---|---|---|---|
| BE03.10-P-1001-05A | Piston ring height | Double beveled oil control ring (1st piston ring) | mm | 1.480-1.492 |
| Taper-faced hook scraper ring (1st piston ring) | mm | 1.980-1.990 | ||
| Oil scraper ring (1st piston ring) | mm | 2.975-2.990 | ||
TEST DATA OF PISTONS
| Number | Designation | Engine 120 | Engine 120 with CODE 473 (fuel-optimized) | ||
|---|---|---|---|---|---|
| BE03.10-P-1016-02C | Piston ring (1) | Groove | mm | 1.53-1.54 | 1.53-1.54 |
| Side clearance | mm | 0.010-0.040 | 0.010-0.040 | ||
| BE03.10-P-1017-02C | Piston ring (2) | Groove | mm | 2.00-2.01 | 2.00-2.01 |
| Side clearance | mm | 0.010-0.030 | 0.010-0.030 | ||
| BE03.10-P-1018-02C | Piston ring (3) | Groove | mm | 3.000-3.010 | 3.000-3.015 |
| Side clearance | mm | 0.038-0.065 | 0.038-0.065 | ||