TM 5-3895-373-20 CHAPTER 9 TRACK ASSEMBLY MAINTENANCE Para Page General Maintenance Procedures............................................................................ 9.1 9-1 Replace Track Pad................................................................................................... 9.3 9-8 Replace Track Tensioning Accumulator  .................................................................. 9.2 9-2 9.1. 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 track assembly 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. Thoroughly   clean   hydraulic   hoses   and   fittings before disconnecting. Always plug or cap off disconnected   fitting   to   prevent   dirt   and   contaminants from  entering  the  system.    Failure  to  clean  hoses  and fittings  and  to  plug  or  cap  open  fittings  may  result  in hydraulic system contamination and equipment damage. c. Always tag mating connectors and fittings before disconnecting.  Tagging of mating connectors and fittings will ease reassembly and reduce assembly error d. Use    a    backup    wrench    when    loosening     or tightening  in-  line  fittings.    Using  a  backup  wrench  will prevent  unnecessary  damage  to  attached  lines  and/of smaller fittings. e. Thread   locking   compound   is   used   with   most threaded fasteners.  If a threaded fastener will not break loose,  heat  threaded  aria  of  fastener  from  500⁰    600⁰  F (232⁰  to  315⁰  C)  with  heater  gun..  If  the  special  solvent used  to  remove  thread  locking  compound  from  screw threads fails to remove buildup, discard fastener. f. Discard  all  removed  gaskets,  seals,  preformed packings, self-locking nuts, lockwasher, spring pins, and deformed hardware. g. Inspect   all   removed   components   for   obvious wear  of  damage.    Replace  all  worn,  bent,  broken,  or otherwise damaged parts. h. 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 i. 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-.139 for equipment painting requirements j. Use only authorized replacement parts.  Refer to TM 53895-373-24P, Repair Parts and Special Tools List (RPSTL) for authorized replacement parts. k. Torque values cited in the text apply to modified SAE Grade 8 fasteners at required clamping loads. l. 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. 9-1