Trailer Suspension System Components and General Maintenance Guidelines ConƟnued
Measuring Ride Height
4. Raise or lower the trailer as necessary, so it is at the designed ride height. 5. Once the trailer is set to the correct designed ride height, set the HCV lever to the neutral (central) posiƟon.
NOTICE When adjusting the height control valve, block the tires and release the trailer brakes. The axle must rotate freely to avoid a false read- ing. Some height control valves have very small openings and a time de- lay of as much as 15 seconds. Allow sufficient time for the system to react to the adjustment. The response time will appear to be lengthy, but be patient.
6. Adjust the HCV linkage to fit between HCV lever and lower linkage aƩachment. 7. Once set to the designed ride height, test drive the trailer. AŌer the test drive, check the ride height to assure an accurate adjustment.
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