TM  10-3930-638-24&P 3-24. STEERING SYSTEM MAINTENANCE (cont) a. Steering Wheel and Column (cont). STEP LOCATION ITEM ACTION REMARKS CLEANING 3 Cover (9), horn contact Clean Wipe with a clean, dry cloth assembly  (13),  bushing (14), horn wire (17) and horn contact assembly  (22) WARNING Dry cleaning solvent (P-D-680), used to clean parts is toxic and flammable. Wear protective goggles and gloves and use only in a well  ventilated  area.  Avoid  contact  with  skin,  eyes,  and  clothes and don’t breathe vapors. Do not use near open flame or exces- sive heat and don’t smoke when using it. Failure to do so could cause serious injury. If you become dizzy while using cleaning solvent,  get  fresh  air  immediately,  and  get  medical  attention.  If contact with skin or clothes is made, flush with large amounts of water. If contact with eyes is made, wash eyes with water immedi- ately, and obtain medical aid immediately. WARNING Wear safety glasses when drying parts with compressed air. Fail- ure to do so could cause serious injury to eyes and possible blind- ness. If you hurt your eyes or if a foreign object is blown into your eyes, seek medical attention immediately. 4 All other parts Clean Use cleaning solvent P-D-680. Dry thor- oughly with moisture free compressed air INSPECTION/REPAIR 5 Replace if cracked, pitted or scored, or if insulating paper cracked, torn or damaged 6 Replace if cracked or distorted 7 Replace if pitted, scored or worn, or if counterbores for dowel pins (18) elongated. Replace wheel tube (23) if serrations chipped, broken or miss- ing, or if threads damaged 8 Horn wire (17) Replace  if  insulation  frayed,  or  conductor or terminals broken Horn contact assem- Inspect bly (13 and 22) Retaining  springs  (16) Inspect Coupling (19) and wheel Inspect tube (23) Inspect 3-158