Heavy Duty Balanced Opposed Compressors - Ariel Corporation

Section 4 Part Replacement For Models: JGH:E:K:T
injury during this operation.
9. Position the other detuner half on top of the crankshaft spreader section beside the first half.
Position it in the same direction as the first; the bolt head notches for both halves should be on
the same side of the crankshaft.
10. Rotate one detuner half 90° around the crankshaft. Hold this half securely, preferably with a
crane, then rotate the second half around the crankshaft 90° in the opposite direction.
11. Move one or both detuner halves axially along the crankshaft until the bolt holes align. Lubricate
threads and bolt-head seating surfaces with oil or Lubriplate 630, then install the top Capscrew to
finger tight.
12. If only one detuner is required, center it on
the crankshaft spreader section. If two or
more detuners are required, center them
in contact with each other on the crankshaft
spreader section, as shown in the
figure to the right.
NOTE: The TVA report may specify a
different location for the detuner(s).
Detuner(s) centered in spreader section
unless TVA specifies otherwise.
Spreader Section
FIGURE 4-43 Detuner Location - Typical
13. Rotate the detuner 180° and remove lifting eyebolts, if used. Install the remaining detuner Capscrew
and tighten it to finger tight.
14. Alternating from one side of the detuner to the other, tighten each capscrew to the appropriate
torque in Table A-3 in Appendix A. Rotate crankshaft 180° for easy access to each capscrew for
tightening.
15. Proper installation and fastener torque yields a gap between the detuner halves on both sides.
Confirm the gap with feeler stock. If there is no gap, determine and correct the cause prior to
starting the compressor.
16. Remove all tools and other materials, then replace crankcase top cover. Lubricate and tighten
top cover capscrews hand wrench tight.
Installation is now complete. See the Ariel Maintenance and Repair Guide and the Packager's
Operation Manual for complete startup information for this compressor model. If the unit is to remain
idle for more than two weeks, protect the unit according to Ariel instructions ER-25.
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