TM 10-4320-325-14
TO 34Y5-2-40-1
4-16. INSPECT/REPLACE PUMP SUCTION, DISCHARGE, AND PRIMING PORT PIPING, COUPLING
HALVES, AND DUST PLUG.
This task covers:
a) Inspection
b) Removal
c) Installation
INITIAL SETUP
Tools
Materials/Parts
Tool Kit, General Mechanics
Gasket, MS27030-6
Antiseize Tape (Item 7, Appendix E, Section III)
Pipe Wrench
Equipment Condition
None
Inspect the suction, discharge, and priming port extensions for damage. Replace damaged parts.
REMOVAL:
a. Remove male coupling half (1) from nipple (2). Remove nipple (2) from discharge port (3).
b. Remove female coupling half (4) from nipple (5). Remove gasket (6) from coupling half (4).
Discard gasket.
c.
Remove nipple (5) from suction port (7).
d. Remove dust plug (8) and chain (9) from female coupling half (10). Remove chain (9) from
dust plug (8). Remove two key rings (11) from chain (9).
e. Remove coupling half (10) from nipple (12). Remove gasket (13) from coupling half (10).
Discard gasket.
f.
Remove nipple (12) from priming port (14).
INSTALLATION:
Note
All threaded pipe fittings must have four clockwise wraps of antiseize tape.
a. Install 2-inch nipple (12) in priming port (14).
b. Install new gasket (13) in coupling half (10). Install coupling half (10) on nipple (12).
c.
Install two key rings (11) on chain (9). Install one end of chain (9) on dust plug (8).
d. Install dust plug (8) in coupling half (10). Install other end of chain (9) on coupling half (10).
e. Install 5-inch nipple (5) in suction port (7).
f.
Install new gasket (6) in coupling half (4). Install coupling half (4) on nipple (5).
g. Install 8-inch nipple (2) in discharge port (3). Install coupling half (1) on nipple (2).