Challenger SRT-8 V8-6.1L (2009)
Alignment: Testing and Inspection
VEHICLE LEAD/PULL
To assure correct diagnosis, it is important to follow the steps outlined below in the order shown. Road test the vehicle before and after each step to
verify that the lead condition has been corrected. When evaluating a vehicle, always drive the same road in both directions to get a feel for the effect of
road crown and cross wind. A neutral vehicle will exhibit a small amount of drift on both right and left crowned roads (normal crown sensitivity). A
vehicle with pronounced lead/pull may have one or more of the following conditions:
1. UNEQUAL TIRE PRESSURE. Adjust tire pressure to the pressure stated on door placard. Make sure the tire pressure is equal on all four tires
and evaluate the car. Also verify that the tire size and type are correct and match each other. If the car still has a lead condition go to step (2).
2. TIRE CONICITY. Excessive tire conicity is one of the more frequent causes of vehicle lead. Cross-switch the front tires and evaluate the car. If
the car still leads in the same direction or gets worse, return the front tires to their original position, then go to step (3).
3. SUSPENSION ALIGNMENT. Check and record the wheel alignment settings. Non-symmetrical front caster or camber can sometimes cause a
lead condition or can be used to fix a lead condition. Adjust the wheel alignment as necessary to preferred settings See: Service and Repair. If the
car still leads, go to step (4).
4. STEERING GEAR VALVE IMBALANCE. Steering gear valve imbalance can sometimes cause a vehicle lead. Although there is no quick test or
measurement that can be performed to verify a good or bad steering gear valve, generally the steering efforts will feel much lighter in the lead
direction and heavier in the opposite direction with an unbalanced valve. Replace the steering gear only as a "last resort" to solve the problem.
To replace the steering gear, See: Steering and Suspension/Steering/Steering Gear/Service and Repair/Steering Gear - Removal.