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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.
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