BOOM HOIST CYLINDER REPAIR - continued

TM 10-3930-673-34

(m) Install two wear rings (13) and one

seal (14) on piston (12). Position

wear rings so that gaps are 180

apart.

CAUTION

Use care when installing rod and

piston assembly. Keep rod in line

with cylinder tube to prevent

binding. Failure to follow this

precaution will cause part damage.

(n)

Lubricate cylinder tube (2) inner

diameter, piston (12) outside

diameter, and gland (10) outside

diameter with clean hydraulic oil.

(o)

Position rod (9) and piston (12) as an

assembly in cylinder tube (2).

NOTE

Tighten gland so that it is flush with

end of cylinder tube. Do not

TR01760

overtighten gland.

(p)

Tighten gland (10) onto cylinder

tube (2).

(q)

Install back-up rings (3 and 4), two back-up rings (5), and three preformed packings (6, 7, and

8) on counterbalance valve (1).

(r)

Install counterbalance valve (1) in cylinder tube (2).

NOTE

Follow-on Maintenance: Install boom hoist cylinder (TM 10-3930-673-20).

END OF TASK

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