EXTEND AND RETRACT CHAINS REPLACEMENT - continued

TM 10-3930-673-34

b. Retract Chain Removal.

NOTE

One end of retract chain is

disconnected when inner boom is

removed.

(a)

Remove inner boom (12)

(b)

Remove cotter pin (18) and clevis

pin (19) from clevis (20). Discard

cotter pin.

WARNING

Use care when removing snap and

TR01021

retaining rings. Snap and retaining

rings are under spring tension and

can act as projectiles when released

and could cause severe eye injury.

(c)

Remove retaining rings (21), pin (22), and clevis (20). Separate retract chain (23) from clevis.

c. Extend Chain Installation.

(1)

Install extend chain (8).

WARNING

Use care when installing snap and

retaining rings. Snap and retaining

rings are under spring tension and

can act as projectiles when released

and could cause severe eye injury.

(a)

Position one end of extend chain (8)

to clevis (15). Install pin (17) and

two retaining rings (16).

(b)

Tie rope (that was used during

removal and found inside boom) to

end of extend chain (8) just behind

clevis (15).

(c)

Pull rope with extend chain (8)

through boom. Pull rope through opening in boom near clevis (15) mounting hole. Remove

rope from clevis mounting hole and end of extend chain.

(d)

Position clevis (15) with extend chain (8) into mounting hole. Install washer (14) and nut (13)

on clevis.

16-95