TM 5-5420-228-24
VISION BLOCK REPLACEMENT (EARLY MODEL CUPOLA) (Sheet 1 of 3).
TOOLS:
Screwdriver (flat tip)
7/8 in. socket with 1/2 in. drive
Putty knife
5 in. extension with 1/2 in. drive
Diagonal cutting pliers
Pliers, slip joint
Handle with 1/2 in. drive
Torque wrench with 1/2 in. drive
SUPPLIES: Dry cleaning solvent (Item 15, Appendix D)
(0-175 lb-ft)
Rag, wiping (Item 12, Appendix D)
Vision block
Locking wire (Item 20 Appendix D)
Sealing compound (Item 21, Appendix D)
Gloves (Item 27, Appendix D)
PERSONNEL: One
REFERENCE: TM 5-5420-202-10
PRELIMINARY
PROCEDURE:
Open cupola cover.
REMOVAL:
1.
Using flat-tip screwdriver
remove fourteen screws (A).
Using flat-tip screwdriver
2.
pry up on bezel (B) to break
sealant and remove bezel from
cupola body (C).
Using putty knife scrape sealing
3.
compound from cupola body (C)
vision block (D) and bezel (B).
Go on to Sheet 2
TA251411
3-10