Heavy Duty Balanced Opposed Compressors - Ariel Corporation
Heavy Duty Balanced Opposed Compressors - Ariel Corporation
Heavy Duty Balanced Opposed Compressors - Ariel Corporation
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FOR MODELS: JGZ AND JGU SECTION 5 - MAINTENANCE<br />
future reference.<br />
Piston and Rod - Installation<br />
1. Install the piston-rod-assembly with piston rings and wear band into the cylinder.<br />
The threaded crosshead end of the rod is 1/4 inches (6mm) smaller than the<br />
inside diameter of the packing. It is not necessary to use an entering sleeve if<br />
reasonable care is taken, but a plastic sleeve may be helpful to be sure that the<br />
packing rings are not damaged. A piston rod entering sleeve is provided in the<br />
<strong>Ariel</strong> tool box, see Figure 7-3 on Page 7-3. For longer rods, a separately purchased<br />
piston rod support can be useful, see Figure 7-10 on Page 7-6. See<br />
“Piston Rings - Installation” on Page 5-43 and “Wear Band - Installation” on<br />
Page 5-43.<br />
2. See “Crosshead - Installation” on Page 5-12 for details to re-attach piston rod to<br />
crosshead, check piston end clearance, piston rod runout and crosshead clearances,<br />
and re-assemble to close cylinder and crosshead guide.<br />
Crosshead<br />
Crosshead-<br />
Balance Nut<br />
Piston Rod Run Out<br />
Set<br />
Screws<br />
Piston Rod<br />
Piston<br />
Piston Rod<br />
Turning<br />
Tool B-3472<br />
Ratchet Extension<br />
Support Tool<br />
B-1240<br />
FIGURE 5-28 PISTON AND ROD REMOVAL/INSTALLATION - TYPICAL<br />
Check piston rod run out after installing a new unit, after relocating a unit or after any maintenance<br />
that could affect rod run out.<br />
Verify that the crosshead guides are properly shimmed to level. See “Setting Crosshead<br />
Guides” on Page 2-4. Verify that the crossheads are in direct contact with the bottom of the<br />
PAGE 5 - 40 7/09