FOR MODELS: JGW, JGR AND JGJ SECTION 5 - MAINTENANCE
1/01 PAGE 5 - 41
Denatured alcohol presents health and safety hazards. Keep away from heat, sparks, flame
and all other ignition sources. Use adequate ventilation, neoprene or butyl gloves, mono-
goggles or face-mask and impermeable apron. Denatured alcohol contains methyl alcohol
which is poisonous if ingested. Avoid eye contact. Materials resulting from clean-up are to
be handled and disposed in a proper manner. See manufacturer’s Material Safety Data
Sheet for more information.
Use very small amounts of Never-Seize on the nut and collar when assembling the piston
assembly.
Thoroughly clean the piston with denatured alcohol until a clean, alcohol soaked towel does
not remove any more debris. This includes cleaning the ring grooves exceptionally well.
Disassemble the packing case, wipe all surfaces clean with denatured alcohol and re-
assemble. When the packing case is water-cooled, re-assemble and test to “Water-Cooled
Compressor Rod Packing” on page 5-39, using water instead of oil for testing. Thoroughly
dry packing case with warm air, such as with a hair dryer. Handle cleaned parts with new or
clean “rubber” or new white cotton gloves.
Before installing the piston rod into the unit, wipe the piston rod with denatured alcohol. Be
careful not to leave any fingerprints on the rod before it contacts the packing case rings.
Make sure the piston rod is wiped down with denatured alcohol after the rod is installed.
Clean the head end head or unloader components with denatured alcohol. Use small
amounts of oil for the bolt holes to make sure the oil does not run down into the cylinder.
Also install the head end steel gasket without Never-Seize.
The valves should be disassembled, cleaned with denatured alcohol, re-assembled, wiped
down again, and installed. Clean the retainers and high clearance assemblies with dena-
tured alcohol. Use only a thin film of oil for the valve cap O-rings and bolt holes.
Cleaned parts are to be assembled immediately to avoid contamination and corrosion. If cyl-
inder is not to be put into immediate service, contact Ariel (see “Ariel Telephone and Fax
Numbers” on page 7-9) for preservation instructions to ER-34.
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