Coupling Shaft Angle
WARNING:
On vehicles with electronic air suspension, suspension system MUST be disabled prior to hoisting or jacking. See DISABLING ELECTRONIC AIR SUSPENSION
under MAINTENANCE.
NOTE:
Ensure that all engine and transmission mounts are in good condition before performing this procedure.
Inspect drive line center support. Check engine angle. See ENGINE ANGLE . Place protractor at any location along bottom of coupling shaft. Read and record angle. Subtract frame angle to obtain drive shaft angle. To decrease angle, shim drive shaft center support. To increase angle, shim rear transmission mount.