F 150 4WD Pickup V8-281 4.6L VIN W EFI (1997)
Universal Joint: Initial Inspection and Diagnostic Overview
Prior to checking driveline angularity, inspect the universal joints for proper operation.
Place the vehicle on a frame hoist and rotate the driveshaft by hand. Check for rough operation or seized universal joints. Replace the universal joint if it
shows signs of seizure, excessive wear or improper seating.
WARNING: THE ELECTRICAL POWER TO THE AIR SUSPENSION SYSTEM MUST BE SHUT OFF PRIOR TO HOISTING,
JACKING OR TOWING AN AIR SUSPENSION VEHICLE. THIS CAN BE ACCOMPLISHED BY TURNING OFF THE AIR SUSPENSION
SWITCH LOCATED IN THE RH KICK PANEL AREA. FAILURE TO DO SO MAY RESULT IN UNEXPECTED INFLATION OR
DEFLATION OF THE AIR SPRINGS WHICH MAY RESULT IN SHIFTING OF THE VEHICLE DURING THESE OPERATIONS.
