TM 9-2320-260-34-2
16-20. EXTENSION CYLINDER REPAIR (M816) (Contd)
b. Cleaning, Inspection, and Repair
WARNING
Drycleaning solvent is flammable and will not be used near open
flame. Use only in well-ventilated places. Failure to do so may
result in injury to personnel.
1. For general cleaning instructions, refer to para. 2-8.
2. For general inspection instructions, refer to para. 2-9.
3. Inspect piston rod (2) for burrs, scoring, scratches, and stripped threads. Remove minor scratches
and burrs with crocus cloth. If piston rod (2) is scored, or if stripped threads are evident. replace
piston rod (2).
4. Inspect piston (9) and extension cylinder (16) for scoring. If scored, replace.
Install new seal (14) in packing nut (13).
1.
Install new packing (10), piston rod bushing (11), new packing 12), and packing nut 13) on cylinder
2.
head (1).
Install two half rings (8) on piston (9).
3.
NOTE
Use care not to damage wiper strip when passing over threads on
piston rod.
Install cylinder head (1) on piston rod (2).
4.
Install two U-cup retainers (6), U-cups (7), and piston (9) on piston rod (2) with washer (5) and
5.
piston rod nut (4).
Install new safety wire (3) on piston rod nut (4) and piston rod (2).
6.
Slide piston rod (2) into extension cylinder (16) and install cylinder head (1) on extension
7.
cylinder (16). Use spanner wrench to tighten cylinder head (1).
Install grease fitting (15) on piston rod (2).
8.
Install plug (19) on elbow (20).
9.
10.
Install elbow (22), two nipples (17), couplings (18), and elbows (20) and (21) on extension
cylinder (16).
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