TESTING & REPAIR > REMOVE/INSTALL FRONT SHOCK ABSORBER - AR32.25-P-0105RT

Size: px

Start display at page:

Download "TESTING & REPAIR > REMOVE/INSTALL FRONT SHOCK ABSORBER - AR32.25-P-0105RT"

Pauline Dorcas Bryan
5 years ago
Views:

1 Page 1 of 8 Service Manual: SUSPENSION -- R500/R63 Print Date: TESTING & REPAIR > REMOVE/INSTALL FRONT SHOCK ABSORBER - AR32.25-P-0105RT 2006 Mercedes-Benz R L Eng MODELS 251 except CODE (489) Airmatic (air suspension with level adjustment and adaptive damping system ADS) Fig 1: Identifying Front Shock Absorber Remove/Install Components Courtesy of MERCEDES-BENZ USA Remove Risk of death caused by vehicle slipping or toppling off of the lifting platform. Align vehicle between the columns of the lifting platform and position the four support plates at the lifting platform support points specified by the vehicle manufacturer. AS00.00-Z A Risk of injury caused by pinching or crushing when working on springs or spring bodies that are under load Use only approved AS00.00-Z A tensioning devices; shield off hazard area if necessary. Inspect special tools for damage and proper operation (visual

2 Page 2 of 8 Notes on self-locking nuts and bolts Notes on adjusting the vehicle level at the front axle inspection). Wear protective gloves. All models The vehicle level must be adjusted if the values are outside the tolerance during the measurement of vehicle level. The following should be observed here: The vehicle level is reduced by removing spacer rings or increased by adding spacer rings between the spring (7) and the bottom spring seat (12). If the spring seat (4) and/or spring (7) and/or shock absorber (11) have to be replaced after testing, then the suspension strut is first to be installed in the vehicle without spacer rings and the vehicle level measured again. If the values are still outside the tolerance after a further level measurement, the suspension strut must be removed again and the vehicle level adjusted. AH00.00-N A 1 AR32.25-P-1017RT

3 Page 3 of 8 Remove front suspension strut Disassemble/assemble 2 Clamp tensioning device (10) in a vise, insert clamping plate (8) and clamping plate (9) 3 Insert suspension strut into tensioning device (10) Tensioning device Fig 4 Tensioning plates Fig 3 Insert suspension strut to clamp as many coils on the spring (7) as possible. Mark the position of all parts of the suspension strut relative to each other. Tensioning device Fig 4 Tensioning plates Fig 3 4 Clamp spring (7) until the upper spring cup (3) is relieved of load. The tensioning device (10) must be clamped and unclamped using a fork wrench or box wrench. No pneumatic or electrically driven tools may be used. Tensioning device Fig 4 Tensioning plates Fig 3 5 Remove cap (1) 6 Unscrew mounting nut (2), remove shock absorber (11) and if necessary spacer rings from the spring (7) 7 Remove bellows (6) and stop damper (5) 8 Release tensioning device (10) and remove spring (7) with upper spring cup (3) and spring seat (4) Check Counterhold the piston rod using a wrench socket. Socket wrench Fig 2 *BA32.25-P H

4 Page 4 of 8 9 Check shock absorber (11) Check shock absorber (11) for leaks. A thin film of oil on the shock absorber (11) is acceptable. Replace shock absorber (11) if necessary. AR32.25-P-0121A 10 Check bellows (6), stop damper (5) and spring seat (4) for signs of wear Adjust 11.1 Remove spacer rings between the spring (7) and bottom spring seat (12) to reduce the vehicle level or add to increase the vehicle level Replace any components with oil contamination, cracks or deformation. Only if the vehicle level is to be adjusted at the front axle without replacing the spring seat (4) and/or the spring (7) and/or the shock absorber (11). If the spring seat (4) and/or spring (7) and/or shock absorber (11) are replaced, all the spacer rings fitted during removal must be left out. 12 Assemble in reverse order Assemble suspension strut such that the upper spring cup (3) is correctly assembled and positioned on the suspension strut. Install 13 Install front suspension strut, measure vehicle level and adjust if necessary AR32.25-P-1017RT 14.1 Adjust the zero position of the xenon headlamps On vehicles with bixenon headlamp unit with integrated curve illumination, code 615. Connect STAR DIAGNOSIS and read out fault memory STAR DIAGNOSIS diagnostic system AD00.00-P A *WH58.30-Z A

5 Page 5 of Check headlamp adjustment and correct if necessary After installing new parts. Check and correct headlamp adjustment AP82.10-P-8260RT FRONT AXLE SHOCK ABSORBER Number Designation Model 251 BA32.25-P H Nut to piston rod Nm 30 COMMERCIALLY AVAILABLE TOOLS Number WH58.30-Z A Designation STAR DIAGNOSIS diagnostic system, Compact Passenger Car

6 Page 6 of 8 Fig 2: Identifying Socket Wrench ( ) Courtesy of MERCEDES-BENZ USA

7 Page 7 of 8 Fig 3: Identifying Tensioning Plates ( ) Courtesy of MERCEDES-BENZ USA

8 Page 8 of 8 Fig 4: Identifying Tensioning Device ( ) Courtesy of MERCEDES-BENZ USA

AR35.20-P-0115B Remove/install wheel carrier

AR35.20-P-0115B Remove/install wheel carrier 31.8.11 MODEL 129, 170, 202, 208 MODEL 210 except CODE (979) Special protection version except CODE (Z06) B6 armoring Version up to 12/97 or 01/98 P35.20-0231-09