TM 5-4320-300-14
5-21. IMPELLER, SHAFT, SEALS, AND CHECK VALVE (CONT)
Location/Item
Action
Remarks
13. Impeller,
Inspect for excessive wear, rust, corrosion, or
volute, seal
other damage. Replace any worn or damaged
plate, and
parts.
wear plate
14. Bearings
Slide bearings onto shaft, rotate shaft, and
notice any rough or tight spots in bearings.
Replace bearings if rough or tight. Inspect
bearing exterior for rust, corrosion, or other
damage. Replace bearings if damaged in any
way.
15. Shaft
Remove bearings. Inspect shaft for excessive
wear, rust, corrosion, or other damage. Re-
place shaft if damaged in any way.
ASSEMBLY
16. Check valve
Install check valve assembly, valve seat and
assembly
gasket on suction flange. Then, install new
gasket, companion flange, and mounting nuts.
Tighten nuts securely in an alternating pattern.
17. Bearings
Pack about 1/3 full of MIL-G-10924 grease.
Rotate bearing to
Press bearings onto shaft.
distribute grease.
18. Retaining
Install on shaft.
rings
19. Grease seals
Press a replacement grease seal into the bearing
housing and bearing cap.
20. Shaft
Pack grease into space between bearings in
bearing housing. Install shaft with bearings and
retaining rings in bearing housing.
21. Bearing cap
Install new grease seal and packing. Fill cap with
MIL-G-10924 grease. Slide it onto shaft, and in-
stall screws. Tighten screws securely.
22. Seal plate
Install a new shaft seal assembly and seal plate
and shaft
seal in seal plate. Lightly seat shaft with MI L-L-
seal assembly
2104 oil and slide seal plate with seal and shaft
seal assembly onto the shaft. Attach seal plate
to bearing housing with nuts and lockwashers.
Tighten securely.
5-85
