Fastener Tightening Torque
Listed in the following tables are fastener tightening torque values required for proper
assembly of Ariel JG and JGA compressors. Refer to the section concerning a subject component
for detailed assembly procedures.
Threads must be clean and free of burrs.
Torque values are based on the use of petroleum type lubricants on both the threads and
seating surfaces. Use lubricating oil or Lubriplate 630, except for compressor rods-piston
end, piston nuts and crosshead nuts use Never-Seez (by Bostik, Boston St., Middleton, MA
01949, phone: 508-777-0100). Molybdenum disulfide lubricants and Never-Seez are not
otherwise to be used for fastener lubrication, unless specified, or excessive stresses can
result with the listed values