APRON CYLINDER REPAIR - CONTINUED
DISASSEMBLY - CONTINUED
Remove and discard ring (14), seal (13), ring (12), seal (11) and ring (10) from piston (9).
Remove and discard preformed packing (19), washer (18) and seals (15, 16 and 17) from head (3).
Solvent cleaning compound MIL-PRF-680 Type III is an environmentally compliant and low toxic
material. However, it may be irritating to the eyes and skin. Use protective gloves and goggles. Use in
well-ventilated areas. Keep away from open flames and other sources of ignition.
Particles blown by compressed air are hazardous. DO NOT exceed 15 psi (103 kPa) nozzle pressure
when drying parts with compressed air. Use a maximum of 30 psi (207 kPa) when cleaning compo-
nents. DO NOT direct compressed air against human skin. Failure to follow this warning may result in
serious injury or death. Make sure air stream is directed away from user and other personnel in the area.
To prevent injury, user must wear protective goggles or face shield.
Remove all preformed packing material from mounting surfaces.
Use emery cloth to scuff surfaces of the counterbore in the cylinder head and the outside diameter of the new seals'
Clean all parts with solvent.
Clean the counterbore and the metal shell of the new seals until none of the components discolor a clean white towel.