FRAME TILT CYLINDER REPAIR - continued

TM 10-3930-673-34

(3)

Remove back-up rings (2 and 3), two back-

up rings (4), and preformed packings (5, 6,

and 7) from each counterbalance valve (1).

Discard preformed packings.

(4)

Disassemble frame tilt cylinder parts (8

through 19).

CAUTION

Do not scratch or damage the wear

surface of rod, piston, or gland. Follow

this precaution to prevent failure of the

frame tilt cylinder.

(a)

Use a suitable tool to pull rod (8) out

approximately 5 in. (127 mm) for

removal of gland (9).

TR01013

(b)

Place a container under gland (9) to catch

oil contained in the frame tilt cylinder.

(c)

Use a spanner wrench to remove gland (9) from cylinder tube (10). Pull gland out of cylinder far enough to

unseat preformed packing (11). Allow oil to drain into container.

CAUTION

Use care when removing rod and piston assembly to prevent wear ring damage. Keep rod in line with

cylinder tube to prevent binding.

(d)

Remove rod (8) and piston assembly from cylinder tube (10).

(e)

Place rod (8) and piston assembly on suitable supports to prevent damage.

(f)

Remove two wear rings (12).

CAUTION

Do not nick or scratch seal groove during removal of seal. Failure to follow this precaution will cause

part damage.

(g)

Cut and remove seal (13). Discard seal.

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