TM 5-3895-373-20 CHAPTER 11 BODY, CAB, AND HOOD MAINTENANCE Para Page General Maintenance Procedures......................................................................................................... 11.1 11-1 Repair Access Doors and Covers ......................................................................................................... 11.2 11-2 Replace Operator Control Console Support Frame .............................................................................. 11.4 11-34 Replace/Repair Seat Assembly............................................................................................................. 11.5 11-41 Replace Walkways, Screed Guard Plates, and Screed Handrail.......................................................... 11.3 11-13 11.1. GENERAL MAINTENANCE PROCEDURES. All    unit     level     maintenance     shall     be     performed     in accordance with good and safe shop practices.  Observe the following general instructions and requirements when performing body, cab, and hood maintenance. a. Areas    of    the    paving    machine    exposed    to paving  material  buildup  require  cleaning  prior to  disassembly.    Use  hammers,  chisels,  and scrapers     to     remove     thickest     sections     of buildup.  If available, use heater gun to soften deposits    adhering    to    components;    remove softened    buildup    with    putty    knife.        When heating  paving  material,  keep  second  person with    fire    extinguisher    at    hand    and    avoid overheating.  If heater gun is not available, use solvent   or   fuel   washdown   system   to   soften paving material. b. Thread  locking  compound  is  used  with  most threaded fasteners.  If a threaded fastener will not     break     loose,     heat     threaded     area     of fastener  from  500°  to  6000F  (232°  to  315°C) with heater gun.  If the special solvent used to remove  thread  locking  compound  from  screw threads    fails    to    remove    buildup,    discard fastener. c. Discard all removed gaskets, seals, preformed packings, self-locking nuts, lockwashers, spring pins, and deformed hardware. d. Inspect  all  removed  components  for  obvious wear   or   damage.      Replace   all   worn,   bent, broken, or otherwise damaged parts. e. Inspect    all    removed    fasteners    for    thread damage.    If  thread  damage  is  found,  replace fastener.    Replace  flat  washers  if  galled  or bent.      Use   screw   extractor   set   (Item   15, Appendix    E)    to    remove    broken    studs    or screws. f. Clean    painted    surfaces    thoroughly    before repainting.  Do not paint over rust or corrosion. Cover     air     breather     ports     and     hydraulic components.    Do  not  paint  bearings  or  other parts that require surface lubrication. Reference TM 43-0139 for equipment painting requirements. g. Torque   values   cited   in   the   text   apply   to modified  SAE  Grade  8  fasteners  at  required clamping loads. h. Use only authorized replacement parts.  Refer to   TM   5-3895-373-24P,   Repair   Parts   and Special   Tools   List   (RPSTL)   for   authorized replacement parts. i. Observe   all   warnings   and   cautions.      Wear protective clothing and equipment as specified. Observe   the   Safety   and   Hazard   Warnings provided  in  TACOM  technical  bulletin  TB  43- 0216. 11-1