Suspension - Vehicle Lean or Spring Sag

87ford14

Article No. ^ SPRINGS - RATE AND CAPACITY -
87-19-10 INFORMATION


^ SUSPENSION - VEHICLE LEAN OR SPRING SAG

LIGHT TRUCK: 1980-88 ALL LIGHT TRUCK LINES

ISSUE: Vehicle lean, or spring sag conditions, are more often related to payload/body weights (especially on recreational vehicles) than to weakened or sagged springs. Sometimes, springs may be replaced unnecessarily because the available spring information in the Light Truck Sales Data Book is not used.

ACTION: If service is required, make sure of proper spring usage. The vehicle should first be weighed (front, rear, and total) so that the values can be compared to the ratings on the vehicle's certification label. Vehicle design heights for curb (empty) and loaded vehicles are included in the Body Builder's Layout Book. Spring rates, capacities, and codes are listed in the Light Truck Sales Data Book. The spring charts will provide full information for the spring's characteristics. (Both books should be available in the dealership sales department.)

Comparing vehicle weights, rated capacities, and design height should determine the cause of most sag/lean concerns. If more help is necessary, contact the Technical Service Hotline.

OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: "INFORMATION ONLY"