(Remove/Install Rear Spring Control Arm - AR35.20-P-0119RFW)
Model 253.992/993
Shown on right side of vehicle
| Risk of injury caused by scraping or cutting body parts on sharp vehicle parts | Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels. |
AS00.00-Z-0017-01A | |
| Risk of explosion caused by escaping hydrogen or overheating of the fuel tanks when working on the hydrogen system. Risk of frostbite to body parts caused by escaping gas and by touching component parts carrying gas when emptying fuel tanks. Risk of asphyxiation caused by inhalation of air diluted by hydrogen. Risk of burn injuries by coming into contact with an invisible pale blue hydrogen flame. | AS00.00-Z-0030-01B | ||
| Risk of death caused by vehicle slipping or toppling off of the lifting platform. | Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer. | AS00.00-Z-0010-01A | |
| Notes on fuel cell system | AH00.00-P-0022-01RFW | ||
| Notes on self-locking nuts and bolts | AH00.00-N-0001-01A | ||
| Notes on handling, transport and storage of composite brake disks | AH42.10-P-9406-12LF | ||
| Notes on threaded connections fastened using a tightening angle-based tightening process | AH00.00-P-0020-01A | ||
| Notes on safety-relevant components | AH00.00-Z-0019-01A | ||
| Notes on repair work on suspension components | AH00.00-P-0100-01A | ||
| Remove/install | |||
| 1 | Ensure that the requirements for driving into the workshop are fulfilled. | ||
| Requirements for driving into the workshop | AH00.00-P-0021-01RFW | ||
| 2 | Print out "tank system, fuel cell, form event log," fill out, and attach to the vehicle somewhere clearly visible. | ||
| OF00.00-P-3000-21RFW | |||
| 3 | Remove air spring. | AR32.22-P-1500RFW | |
| 4 | Unscrew nut (4) and remove screw from torsion bar linkage out of spring link (1). | ||
| *BA32.20-P-1003-04T | |||
| 5 | Unscrew nut (3) and pull screw of shock absorber out of spring link (1). | ||
| *BA32.25-P-1001-03P | |||
| 6 | Unscrew nut and pull screw (5) out of spring link (1). | ||
| *BA35.20-P-1002-01I | |||
| 7 | Unscrew nut (2) and pull screw of spring link out of rear axle carrier (6). | ||
| *BA35.20-P-1001-01I | |||
| Fig 1 | |||
| 8 | Remove spring link (1). | ||
| Check | |||
| 9 | Check elastomer bearing (7) in rear axle carrier (6) for condition and damage. | If problems exist, ↓ Replace elastomer bearing (7). |
|
| 10 | Check supporting joint (9) in wheel carrier (8) for condition and damage. | If problems exist, ↓ Replace supporting joint (9). |
AR35.20-P-0116LW |
| 11 | Install in the reverse order. | ||
| 12 | Perform chassis alignment. | AR40.20-P-0200LW |
REAR AXLE TORSION BAR
| Number | Designation | Model 253 (except 253.388/389/988/989) except code 489 (AIR BODY CONTROL) |
Model 253 (except 253.388/389/988/989) with code 489 (AIR BODY CONTROL) |
||
|---|---|---|---|---|---|
| BA32.20-P-1003-04T | Nut, torsion bar linkage to spring control arm | Stage 1 | Nm | 20 | 35 |
| Stage 2 | ∠° | 180 | 120 | ||
REAR AXLE SHOCK ABSORBER
| Number | Designation | Model 253 | |||
|---|---|---|---|---|---|
| BA32.25-P-1001-03P | Self-locking nut, shock absorber to spring control arm | Air suspension | Stage 1 | Nm | 100 |
| Stage 2 | ∠° | 90 | |||
| Steel suspension | Stage 1 | Nm | 45 | ||
| Stage 2 | ∠° | 90 | |||
SPRING CONTROL ARM
| Number | Designation | Model 253 | ||
|---|---|---|---|---|
| BA35.20-P-1001-01I | Bolt, spring control arm to rear axle carrier | Stage 1 | Nm | 80 |
| Stage 2 | ∠° | 90 | ||
SPRING CONTROL ARM
| Number | Designation | Model 253 | ||
|---|---|---|---|---|
| BA35.20-P-1002-01I | Bolt, spring control arm to wheel carrier | Stage 1 | Nm | 80 |
| Stage 2 | ∠° | 90 | ||