Heavy Duty Balanced Opposed Compressors - Ariel Corporation

More documents

Recommendations

Info

FOR MODELS: JGZ AND JGU SECTION 5 - MAINTENANCE 3. Remove the roll-in support table assembly. Rotate the crosshead 90°. Slide the crosshead into the guide and off of the installation tool. Be sure that it does not become cocked. Should the crosshead become wedged, do not force it. Ease it off and start again (some prying may be required at the connecting rod end on the interior of the top crosshead shoe, against cribbing placed in the guide to compensate for cantilever droop). Be careful not to damage the crosshead shoe and guide bearing surfaces during installation. 4. Remove the crosshead installation/removal spindle tool and reinstall the oil wiper gland. 5. Lift the crosshead end of the connecting rod and manually rotate the crankshaft to near the outer dead center position to locate the connecting rod in position and insert the crosshead pin. Use the B-3496 Crosshead Pin Alignment Tool with A-7677 handle as shown in Figure 5-9 on Page 5-15, on the opposite side of the crosshead, to assist the insertion of the pin. Lubricate the crosshead pin and alignment tool with new clean lubricating oil, same type as is used in the frame, prior to installing. Inspect the through cap screw, replace if it shows any signs of damage. Install the crosshead pin end-plates, through cap screw, and a new lock nut. Tighten the through cap screw lock-nut to the value listed in Table 1-11 on Page 1-18. (TIP: If it is difficult to insert the crosshead pin, chill it first.) 6. Install the piston and rod assembly in to the cylinder. See “Piston and Rod - Installation” on Page 5-40. 7. Be sure the crosshead-balance nut seating surfaces are flat and free of burrs. Dress nut seating surfaces with a fine grit flat stone as required. The piston rod threads and crosshead-balance nut seating surfaces are to be lubricated with a thin coating of Never-Seez, Regular Grade for proper assembly. 8. Install the crosshead-balance nut onto the piston rod. Be sure that the setscrew cup points are toward the crosshead. Turn nut on to rod threads to allow enough clearance to attach the rod to the crosshead. NOTE PISTON END CLEARANCE MUST NOW BE SET OR SERIOUS DAMAGE COULD OCCUR. (SEE REQUIRED PISTON CRANK END CLEARANCE AS SHOWN ON THE CYLINDER IDENTIFICATION PLATE. REFER TO TABLE 1-4 ON PAGE 1-13). 9. Manually rotate the crankshaft to the exact inner dead center position of the throw. NOTE: UTILIZE A DIAL INDICATOR WITH A MAGNETIC BASE TO INDICATE THE LOCATION OF THE CROSSHEAD WHEN FINDING EXACT INNER AND OUTER DEAD CENTER POSITIONS. 10. Determine the required piston end clearance from the cylinder identification plate, refer to Figure 1-7 on Page 1-11 for plate location. Insert a feeler gage, equal to the required crank end clearance, through an open valve pocket. For 13 inch (330 mm) and larger cylinders, insert the feeler gage through a bottom valve pocket. Use the tools illustrated in Figure 5-28 on Page 5-40 to screw the piston-rod-assembly into the crosshead until piston is tight against the feeler gage, so that the feeler gage can not be removed by hand. 11. Tighten the crosshead-balance nut: a. Tighten the crosshead-balance nut with the separately purchased hydraulic crosshead-balance nut torquing tool and hand pump, see Figure 5-10 on Page 5-16 and “<strong>Ariel</strong> Tools - Separately Purchased” on Page 7-4. This tool is 7/09 PAGE 5 - 13
FOR MODELS: JGZ AND JGU SECTION 5 - MAINTENANCE required to loosen/tighten the crosshead-balance nut. Tighten the nut with the hydraulic crosshead-balance nut torque tool properly configured and positioned in the right hand crosshead guide window when looking at compressor frame standing at cylinder for pushing against the top of the window. See Table 1-11 on Page 1-18 for the hydraulic pressure to be applied to the torque tool. b. Install the tool to position the spanner wrench adapter open area toward the spanner wrench as shown in Figure 5-10 on Page 5-16. Apply hydraulic pressure to the cylinder to tighten the crosshead-balance nut. When the cylinder moves to the end of its travel, release the pressure and index the cylinder to the spanner wrench slot and/or spanner wrench to adapter, until the nut stops moving at the specified hydraulic pressure with cylinder in midstroke. If during tightening, the adapter open area turns 90° before nut is tight, remove the spanner wrench. Remove the bolting in the spanner wrench adapter to the crosshead-balance nut and reposition the adapter so the open area again faces the spanner wrench. CAUTION: DO NOT ALLOW THE OPEN AREAS OF THE SPANNER WRENCH AND THE ADAPTER TO OVERLAP AS THE SPANNER WRENCH CAN BE SPRUNG. IF THE SPANNER WRENCH BECOMES SPRUNG, DESTROY IT AND REPLACE IT. c. When the nut is tight, the feeler gage can be removed by hand. Be sure that all tools have been removed from the cylinder. 12. With the head end head or VVCP (closed position) properly installed and fasteners properly tightened, manually rotate the crankshaft 180° to the exact outer dead center position of the throw. 13. Remove a top head end valve. 14. Determine the required piston head end clearance limits from the cylinder identification plate, refer to Table 1-4 on Page 1-13. Measure head end clearance at the top of the head end. Using feeler gages through the open valve pocket, check the head end clearance. Determine that the measured clearance is within the required clearance limits. 15. Tighten the set screws in the crosshead-balance nut. 16. Re-install the valve assemblies and properly tighten the fasteners. See “Valves - Reassembly” on Page 5-57 and “Tightening Valve Cap Bolting” on Page 5-59. 17. Check crosshead to guide clearances and piston rod runout upon re-assembly, any time a piston rod is removed. See Table 1-4 on Page 1-13 for crosshead clearances and “Piston Rod Run Out” on Page 5-40. 18. Be sure that all tools, measuring and lifting equipment, supplies, replaced parts, etc. have been removed from the crosshead guide. Reinstall the crosshead guide side covers and gaskets, tighten all cap screws hand wrench tight. If there is any doubt that an old gasket is not in good usable condition, install a new gasket. Before installing a gasket, apply a light coating of anti-seize lubricant to both sides or to the metal seating surfaces. This will help to hold the gasket in place PAGE 5 - 14 7/09
Page 1 and 2:
ARIEL Heavy Duty Balanced Opposed C
Page 3 and 4:
FOR MODELS: JGZ AND JGU TABLE OF CO
Page 5 and 6:
Page 7 and 8:
Page 9 and 10:
FOR MODELS: JGZ AND JGU SECTION 1 -
Page 11 and 12:
Page 13 and 14:
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
FOR MODELS: JGZ AND JGU SECTION 4 L
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84: FOR MODELS: JGZ AND JGU SECTION 4 L
Page 123 and 124: FOR MODELS: JGZ AND JGU SECTION 5 -
Page 133: FOR MODELS: JGZ AND JGU SECTION 5 -
Page 185 and 186:
Page 187 and 188:
Page 189 and 190:
Page 191 and 192:
Page 193 and 194:
Page 195 and 196:
Page 197 and 198:
Page 199 and 200:
Page 201 and 202:
Page 203 and 204:
Page 205 and 206:
Page 207 and 208:
Page 209 and 210:
Page 211:
show all

Heavy Duty Balanced Opposed Compressors - Ariel Corporation

Create successful ePaper yourself

Delete template?

Save as template?