4-45. CHANGING TIRES (Con't).
Use extreme caution during removal of spare tire (3) from spare tire carrier
(4). Spare tire is heavy. Dropping it could cause serious injury to personnel.
If semitrailer is coupled to tractor, wheels may be locked by disconnecting
EMERGENCY air coupling.
Disconnect chain (1). Loosen two wing nuts and free hook bolts (2) from rim of spare tire (3).
Remove spare tire from spare tire carrier (4).