TM 9-2320-272-24-4
WARNING
Drycleaning solvent is flammable and toxic. Do not use near open
flame and always have a fire extinguisher nearby when solvents
are used. Use only in well-ventilated places, wear protective
clothing, and dispose of cleaning rags in approved container.
Failure to do this may result in injury or death to personnel and/or
damage to equipment.
1.
Clean all boom extension cylinder components with drycleaning solvent and dry with lint-free cloth
(para. 2-14).
2.
Inspect piston rod (6). Remove scratches and burrs with crocus cloth. Replace if scored or threads
are stripped.
3.
Inspect piston (11) and cylinder body (1). Replace piston (11) or cylinder body (1) if scored.
1.
Install two half rings (12) on piston (11).
2.
Using bushing installer and handle, install piston rod bushing (5) in cylinder head (7).
3.
Install new O-ring (8), new packing (4), packing nut (2), and new wiper strip (3) on cylinder head (7).
NOTE
Use care not to damage wiper strip when passing over threads on
piston rod.
4.
Install cylinder head (7) on piston rod (6).
5.
Install two U-cup retainers (9), U-cups (10), piston (11), and washer (13) on piston rod (6) with
piston rod nut (15) and new lockwire (14).
6.
Slide piston rod (6) into cylinder body (1) and install cylinder head (7) on cylinder body (1). Using
spanner wrench, tighten cylinder head (7).
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