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Page Title: IMPELLER HOUSING - lNSPECT/REPLACE (Cont)
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TM   55-2915-335-30&P 2-24.  IMPELLER  HOUSING  -  lNSPECT/REPLACE  (Cont) 2-24 2. CLEANING Compressed air aimed at the skin can cause  serious  injury  or  death.  Wear goggles and never use over 30 psi (207 kPa) of compressed air for cleaning. Cleaning solvent can be hazardous to your health. Use solvent only in well- ventilated areas. Avoid breathing solvent vapors. Do not use solvent near an open flame or other source of high heat. Al- ways  wear  gloves,  apron,  and  goggles when using cleaning solvent. Store solvent in approved metal container only. Do not use metal or glass tools to scrape dirt or locking compound from impeller housing surfaces. Scraping with metal or glass will destroy  the  thin,  protective  coating  on  the  housing.  This  could  lead to leaks or early failure of the pump. a. Clean Housing. Wash impeller housing (4) with non-woven cloth (Item 1, Appendix C) and dry cleaning sol- vent (Item 7, Appendix C). Clean debris from all exposed surfaces. Use soft-bristled brush to scrub packing grooves. If needed, use plastic or wood scraping tool to scrape away hardened deposits. Do not use metal or glass  scraping  tools  to  clean  housing  surfaces. b.  Clean  Positive  Terminal  Bore.  Locking  compound  was  used  to  seal  positive  terminal  assembly  (3)  in  housing (4). Use a plastic or wooden tool to scrape residue from bore. c. Clean Threaded Holes. If replacing stud (5), use #10-32 tap to clean threads in housing (4). Run tap in and out of threads two or three times to remove all locking compound residue. d. Rinse impeller housing (4) in solvent (Item 7, Appendix C). Wipe down all surfaces with cleaning cloth (Item 1, Appendix C). Be sure to drain solvent from primary lead wire port. Blow-dry all ports and surfaces with compressed  air,  30  psi  (207  kPa)  maximum. GO TO NEXT PAGE 2-89

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