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TM 5-4320-308-13
3-20. REPLACE VOLUTE, IMPELLER, WEAR PLATE, SHAFT SEAL, AND ADAPTER SHAFT (Continued)
4
Unscrew impeller (9) counterclockwise and remove shims (10 and 11).
5
Remove screws (12). Remove wear plate (13) and packing (14). Discard packing.
6
Remove shaft seal (15) from pump case assembly (4). Discard shaft seal.
7
Remove adapter shaft (6) from pump case assembly (4). Remove key (16).
CLEANING:
WARNING
Dry cleaning solvent P-D-680 (safety or Stoddard's Solvent) is potentially dangerous. Avoid
repeated and prolonged breathing of vapors and skin contact with the liquid. Do not use near
open flame, arcing equipment, or other ignition sources. Always wear eye protection and
protective clothing. The flash point of P-D-680 is 100° to 138°F (38° to 59°C).
Death or serious injury could occur if compressed air is directed against the skin. Do not use
compressed air for cleaning or drying unless the pressure is/has been reduced to 30 psi (2. 06
bar) or less. When working with compressed air always use chip guards, eye protection, and other
personal protective equipment.
Clean volute (3), adapter shaft (6), impeller (9), and wear plate (13) with P-D-680 dry cleaning solvent and dry
with compressed air.
INSPECTION:
1
Inspect volute (3), impeller (9), and wear plate (13) for excessive wear, rust, corrosion, or other damage.
Replace any worn or damaged parts.
2
Inspect adapter shaft (6) for excessive wear, rust, corrosion, or other damage. Replace shaft if damaged in any
way.
3-44
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