TM   9-2320-283-20-3 CAB AND BODY. 3-267.  INSULATOR  REPLACEMENT. THIS TASK COVERS a.   Removal. b.   Cleaning. c.  Installation. INITIAL  SETUP EQUIPMENT   CONDITION APPLICABLE CONFIGURATIONS PARAGRAPH CONDITION  DESCRIPTION All. NOTE TEST  EQUIPMENT None. Perform as necessary. SPECIAL  TOOLS 3-120. Battery  power None. disconnected. 3-29. Air cleaner assembly MATERIALS/PARTS  (P/N) removed. Solvent, drycleaning, SD-2 3-183. Double  check  valve  air Item 29, Appendix C. lines  and  stoplamp  valve Caplug  (as  required) wires  disconnected. (34623)  MA207-20059. 3-184. Firewall  double  check Clip,  insulation  fastener valve air lines dis- (as required) connected. (85105)  101-301-104. 3-174. Brake  treadle  valve firewall  air  lines disconnected. PERSONNEL   REQUIRED 3-215. Lower  steering  column One  (MOS-63S). removed. 3-310. Speedometer  shaft disconnected. REFERENCES  (TM 3-313. Tachometer  shaft TM 9-2320-283-20P. disconnected. 3-297. Heater  control  valve boden  wire  disconnected. TROUBLESHOOTING    REFERENCES 3-171. Park brake valve air hone. line  disconnected  at firewall 3-195. Differential  toggle GENERAL SAFETY INSTRUCTIONS valve air line discon- Engine off. nected at firewall. Transmission  in  neutral. firewall  disconnected. Park brake set. 3-175. Trailer  supply  valve air  line  disconnected at  firewall SPECIAL   ENVIRONMENTAL   CONDITIONS None. 3-1560