TM 5-4320-300-14
5-21. IMPELLER, SHAFT, SEALS, AND CHECK VALVE (CONT)
Location/Item
Action
Remarks
5.
Impeller
Prevent shaft from moving at coupling end and
remove locking cone from opposite end of
shaft. Remove impeller, shims, and Woodruff
key.
6.
Seal plate
Remove nuts and lockwashers. Slide seal plate
and shaft
with seal and shaft seal assembly from shaft.
seal assembly
Discard shaft seal assembly and seal plate seal.
7.
Bearing cap
Remove bearing cap, grease seal, and packing.
Discard grease seal and packing.
8.
Retaining rings
Remove from each end of shaft.
9.
Bearings
Remove.
10. Shaft
Remove.
CLEANING
WARNING
Dry cleaning solvent is flammable and potentially dangerous to people
and property. Do not use near open flame, sparks, excessive heat, or on
hot surfaces. Flash point of P-D-680 solvent is 100° to 1380F (380 to 590C).
Use solvent in a well-ventilated area, and avoid inhaling fumes. If
repeatedly exposed to fumes, seek fresh air and immediate medical help.
Avoid prolonged exposure of skin to solvent. Wash exposed skin
immediately and thoroughly.
Compressed air used for cleaning shall not exceed 100 psi (690 IcPa). Use
goggles, or face shield for eye protection. Do not direct airstream against
skin.
11. All metal
Clean with P-D-680 dry cleaning solvent and dry
parts
with compressed air.
INSPECTION
12. Check valve
Inspect for trapped dirt or other foreign material,
assembly
deteriorated or cracked rubber, corroded metal,
and damaged or missing hardware. Replace damaged
or missing parts.
5-84
