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TM 5-2420-222-34
11-2.
STEERING CYLINDER ASSEMBLIES MAINTENANCE (Con’t).
5.
Place actuating cylinder (16) in a vise with caps. With the aid of an assistant, pull piston rod (17) with assembled
parts out of actuating cylinder. Remove actuating cylinder from vise.
6.
Place piston rod (17) with assembled parts in a vise with caps.
7.
Remove self-locking nut (22) and piston (25) or valve piston (39) with assembled parts from piston rod (17).
Discard self-locking nut.
8.
Remove piston rod (17) from vise.
NOTE
Steps 9 through 11 apply only to loader backhoes with serial numbers 235786-
235999.
9.
Remove retainer (29) with assembled parts from piston rod (17).
10.
Remove preformed packing (23), piston seal (24), and wear ring (26) from piston (25). Discard preformed
packing, piston seal, and wear ring.
11.
Remove preformed packing (27), backup leather (28), wiper seal (31), and rod seal (30) from retainer (29).
Discard preformed packing, backup leather, wiper seal, and rod seal.
NOTE
Steps 12 through 14 apply only to loader backhoes with serial numbers 319995-
342573.
12.
Remove valve stem guide (42) with assembled parts from piston rod (17).
13.
Remove wiper ring (38), two spacer rings (37), preformed packing (34), piston seal (35), and preformed packing
(36) from valve piston (39). Discard preformed packings, spacer rings, piston seal, and wiper ring.
14.
Remove preformed packing (40), packing retainer (41), seal (44), and preformed packing (43) from valve stem
guide (42). Discard preformed packings, packing retainer, and seal.
CAUTION
Perform step 15 only if sleeve bushings are damaged. Removal may damage parts.
15.
Using remover and installer and arbor press, drive sleeve bushings (21 or 32) from actuating cylinder (16) or
piston rod (17).
c.
CLEANING AND INSPECTION
WARNING
Dry cleaning solvent, P-D-680, is toxic and flammable. Always wear protective
goggles and gloves, and use only in a well-ventilated area. Avoid contact with
skin, eyes, and clothes, and DO NOT breathe vapors. DO NOT use near open flame
or excessive heat. The solvent’s flash point Is 100F-138°F (38C-59C). If you
become dizzy while using cleaning solvent, Immediately get fresh air and medical
help. If solvent contacts eyes, Immediately wash your eyes and get medical aid.
1.
Clean all metal parts with dry cleaning solvent and clean rags. Dry thoroughly with clean, dry rags.
2.
Inspect all metal parts for cracks, breaks, and abnormal bends.
11-11
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