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TM 10-3930-669-34
15-7. MAST PRIMARY CYLINDER REPAIR (CONT).
(10)
Remove cylinder (1) from chain vise, rotate 180
degrees, and position cylinder in chain vise.
(11)
Remove button screw (9) and seal (10) from
cylinder (1). Discard seal.
(12)
Remove wiper (11), two wear rings (12), and
seal (13) from cylinder (1). Discard wiper, wear
rings, and seal.
(13)
Remove flow cartridge (14) from cylinder (1).
Discard flow cartridge.
(14)
Remove cylinder (1) from chain vise.
b.
Cleaning/lnspection.
WARNING
•
Dry-cleaning solvent (P-D-680) is TOXIC and flammable. Wear protective goggles and
gloves; use only in a well-ventilated area; avoid contact with skin, eyes, and clothes; and
do not breathe vapors. Keep away from heat or flame. Never smoke when using solvent;
the flashpoint for type I dry-cleaning solvent is 100°F (38°C) and for type II is 138°F (50°C).
Failure to do so may result in injury or death to personnel.
•
If personnel become dizzy while using cleaning solvent, immediately get fresh air and
medical help. If solvent contacts skin or clothes, flush with cold water. If solvent contacts
eyes, immediately flush eyes with water and get immediate medical attention.
(1)
Clean all components and flush cylinder barrel using dry-cleaning solvent only. Do not use cleaning cloth as any
foreign material would contaminate hydraulic system.
(2)
Inspect barrel bore for any scratches or corrosion. Replace barrel if rusted. Replace barrel and piston if either
component is scratched.
(3)
Inspect rod for bending. Replace if necessary.
15-48
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