TM 5-5420-228-24
HEU AND EARLY MODEL EJECTION CYLINDERS REPAIR (Sheet 1 of 4)
PROCEDURE INDEX
Procedures
Page
Disassembly
Cleaning and Inspection
Assembly
3-230-7
TOOLS:
Spanner wrench (adjustable face type, 2 in. capacity)
Cross-tip screwdriver
Pliers, long round nose
SUPPLIES:
Rags (Item 12, Appendix D)
Wiper ring (HEU Model)
Seal pack (HEU Model)
Masking tape (Item 18, Appendix D)
Dry cleaning solvent (Item 15, Appendix D)
Preformed packing
Gloves (Item 27, Appendix D)
Scraper (HEU Model)
Wiper ring (2 required Early Model)
Packing assembly (Early Model)
PRELIMINARY PROCEDURES: Remove ejection cylinder(s) (pages 3-243 and/or 3-247 Early Model) or
(page 3-250.1 HEU Model)
DISASSEMBLY:
1.
Wrap tape on threads of piston rod (A).
2.
Use screwdriver to remove four screws (B).
3.
Remove retainer plate (C) from piston rod (A).
4.
Use spanner wrench in unthreaded holes (D) of bushing (E) and remove bushing (E).
5.
Manually remove wiper ring (F) (Early Model) or scraper (F) (HEU Model) from bushing (E). Discard wiper
ring or scraper (F).
6.
Use pliers to remove wiper ring (G). Discard wiper ring (G).
Go on to Sheet 2