Heavy Duty Balanced Opposed Compressors - Ariel Corporation

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Section 4 Part Replacement For Models: JGH:E:K:T 5. Lift crosshead end of connecting rod and turn crankshaft to its outer dead center position to locate the connecting rod in position and insert crosshead pin. Use Crosshead Pin Alignment Tool on the opposite side of the crosshead to assist pin insertion. Oil crosshead pin and alignment tool prior to installation. Install crosshead pin end-plates, thru-bolt, and a new lock nut. Tighten thru-bolt and lock nut to the value listed in Table A-3 in Appendix A. (TIP: If pin insertion is difficult, chill it first.) 6. Lubricate piston rod threads with Never- Seez regular grade. Re-thread crossheadbalance nut onto piston rod; allow enough clearance to attach rod to crosshead. Position setscrew cup points on crosshead side of nut. Crosshead Alignment Tool Connecting Rod Crosshead Pin FIGURE 4-32 Crosshead Alignment Tool (B-1989) - Typical 7. Position crankshaft at inner dead center position of throw. Use a dial indicator with a magnetic base to indicate crosshead location when finding exact inner and outer dead center positions. NOTE: At this point, set piston end clearance or serious damage may occur. See required piston crank end clearance on cylinder data plate and Table B-2 in Appendix B. 8. Insert a feeler gage, equal to the required crank end clearance, through an open valve pocket. For 13 in. (330 mm) and larger cylinders, insert feeler gage through a bottom valve pocket. Use the tools illustrated in Fig. 4-12 to thread piston rod into crosshead until piston is tight against the feeler gage, and the feeler gage cannot be removed manually. 9. Tighten crosshead-balance nut in one of two ways: • Strike the special slugging peg or open end wrench (see Fig. 1-1) with a dead blow semi-soft faced hammer until an audible difference can be heard or the wrench “bounces” indicating a tight nut. Some mechanics obtain desired tightness in 3 to 4 strikes; others may require more. PAGE 4-26 3/11
For Models: JGH:E:K:T Section 4 Part Replacement • Use a separately purchasedcrosshead-balance nut hydraulic torque tool and hand pump kit. See Table A-3 in Appendix A for the hydraulic pressure to apply to the torque tool. When initially installing the tool, position the spanner wrench adapter open area toward the spanner wrench as shown in the figure. Apply hydraulic pressure to the ram to tighten the crossheadbalance nut. When the ram ends its travel, release pressure and index the ram to the spanner wrench slot and/ or spanner wrench to adapter, until the nut stops moving at the specified hydraulic pressure. If during tightening, Spanner Wrench Adapter mounted on the Balance Nut with three Special Shoulder Bolts; position open area toward Spanner Wrench 10,000 psi (690 bar) Cylinder with 1” (25 mm) Stroke Single Acting/Spring Return Spanner Wrench Crosshead Balance Nut Special High-Strength Shoulder Bolts (3) FIGURE 4-33 Crosshead Balance Nut Hydraulic TorqueTool (G-7583), Tightening Position - Typical 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 open areas of spanner wrench and adapter to overlap, as the spanner wrench can be sprung. If the spanner wrench becomes sprung, destroy it and replace it. • When nut is tight, remove the feeler gage by hand. Verify removal of all tools from cylinder and crosshead. 10. With the head end head or unloader properly installed (closed position) and fasteners tightened, rotate crankshaft 180° to outer dead center position of throw. Remove a top head end valve. Determine required piston head end clearance limits from cylinder data plate, see Table B-2 in Appendix B. Measure head end clearance at the top of the head end. Using feeler gages through the open valve pocket, check head end clearance. Determine if measured clearance is within tolerance. Tighten the crosshead-balance nut set screws. Re-install valve assemblies and properly tighten fasteners. See page 4-7. 11. Check piston rod runout and crosshead clearances upon re-assembly, any time a piston rod is removed. See “Piston Rod Runout” on page 4-14, and Table B-1 in Appendix B for crosshead clearances and checking procedure. 12. Replace crosshead guide side covers and gaskets, tighten all capscrews hand wrench tight. Lubricate both sides of cover gaskets with anti-sieze lubricant or multi-purpose grease to ease future removal. 3/11 PAGE 4-27
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Maintenance and Repair Manual For J
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For Models: JGE:H:K:T Oil Strainer.
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For Models: JGE:H:K:T SECTION 5 - S
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For Models: JGH:E:K:T FIGURE 4-23
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For Models: JGH:E:K:T General Safet
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For Models: JGH:E:K:T Ariel Contact
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Section 1 - Tools For Models: JGH:E
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Section 1 - Tools For Models: JGH:E
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Section 2 - Instrumentation For Mod
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Page 128 and 129: Appendix C - Frame Specifications F
Page 130 and 131: Appendix C - Frame Specifications F
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Appendix D Compressor Clearance, Oi
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Heavy Duty Balanced Opposed Compressors - Ariel Corporation

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