32 00 155 Chassis/Wheel Alignment Without Load
IMPORTANT:
Carry out chassis/wheel alignment check in design position only:
- if the technical prerequisites for an alignment check with ride-height input are lacking
- if, in spite of repairs having been carried out, the car's ride height between the left and right sides is still outside the tolerance
- if the vehicles in question have been involved in an accident
- if the models are M models
NOTE:
- Read and comply with General information and definitions. Refer to 32 00... GENERAL INFORMATION AND DEFINITIONS .
- Read and comply with General chassis definition. Refer to 32 00... GENERAL CHASSIS AND SUSPENSION DEFINITIONS .
- Check compliance with test conditions, bring vehicle to a stop if necessary. Refer to STEERING AND WHEEL ALIGNMENT - TECHNICAL DATA .
- If necessary, prepare lifting platform.
- Drive vehicle onto lifting platform.NOTE: The front and rear wheels must be positioned centrally on the rotary and sliding plates.
- Remove locking pins from both rotary and sliding plates, align pickup using bubble level and activate
- Attach quick-clamping holder/quick-clamping unit to vehicle and remove clamping levers in area of front wheels
- Attach pickup to quick-clamping holder/quick-clamping unit, align using bubble level and connect to rotary platesNOTE: When using quick-clamping units, perform rim runout compensation after installing the pickups. Refer to 32 00... Performing rim runout compensation
- If necessary, attach spoiler adapter.
- If necessary, switch on chassis alignment system.
- Enter customer and vehicle data.
- Identify chassis version and select vehicle. Refer to 32 00... IDENTIFICATION OF SUSPENSION WITHOUT LABEL .
- Enter tire pressure and tread depth.
- Measure and enter vehicle ride height. Refer to RIDING HEIGHT .
- Install brake tensioner.
E81, E82, E87, E88, E90, E91, E92, E93:
IMPORTANT:
Risk of damage!
In order to avoid damaging the front side panel during the "Max. steering lock" drive-in routine, make sure the pickups are removed from the quick-clamping holders/quick-clamping units during output and input alignment. In the process do not detach the connecting cable from the pickups or the rotary plates.
NOTE:
After the drive-in routine, reconnect the pickups to the quick clamping holders/quick clamping units, align using the bubble levels and secure in place.
- Perform input measurement in accordance with equipment manufacturer's instructions.
- Compare specified values with actual values. Refer to STEERING AND WHEEL ALIGNMENT - TECHNICAL DATA .
Only In Event Of Customer Complaint (E.G. Poor Driving Performance):
IMPORTANT:
Do Not Remove Bolts (Front Axle Carrier To Engine Carrier/Body)!
Slacken all bolts (front axle carrier to engine carrier/body) and then retighten to specified torque.
Refer to 31 11 506 LOWERING/RAISING FRONT AXLE CARRIER .
- If necessary, adjust front axle and rear axle. Refer to 32 00 610 ADJUSTING TOE-IN AND CAMBER ON FRONT AXLE and 32 00 620 ADJUSTING REAR AXLE .
- Perform output measurement in accordance with equipment manufacturer's instructions.
- Save and print out test record.
- Carry out steering angle sensor adjustment/adjustment for active front steering. Refer to 61 31 996 CARRY OUT STEERING ANGLE SENSOR ADJUSTMENT .
- Insert locking pins into both rotary and sliding plates
- Remove chassis/wheel alignment system.
- Drive vehicle off lifting platform.