From manual
Operating Instructions With these TruCenter™ models, (TC35270 & TC35160) the operator has the ability to adjust the length or center point of the TruCenter™ unit. If the vehicle tends to pull to one side, the operator needs to push the TruCenter™ switch and hold it in while turning the steering wheel in the direction that makes the vehicle follow a straight path. Then, release the switch. For example, if encountering a high crosswind, depress the switch while correcting the vehicle’s course by turning the steering wheel into the wind. Only turn the steering wheel enough to make the vehicle follow a straight path down the road. When the wind stops push the button, steer the coach so it is going straight and release the button. CAUTION: The switch activates a solenoid that, if activated too long, causes permanent damage to the solenoid. The timer relay is properly set at the factory and the switch on it should not be altered. Altering standard factory setting will cause improper function of TruCenter™ and/ or permanent damage to the solenoid. Although a timer relay is installed to protect the solenoid, we recommend NOT activating the solenoid for periods longer than 5 to 10 seconds at a time. It is better to make multiple, fine adjustments than to hold the switch and try to align in one, time-consuming operation.
NOTE: The adjustment button only allows the adjustment to be made with the steering wheel. It activates an adjustable gas spring, but the actual adjustment must be made by manually turning the steering wheel to the desired position.