Heavy Duty Balanced Opposed Compressors - Ariel Corporation
Heavy Duty Balanced Opposed Compressors - Ariel Corporation Heavy Duty Balanced Opposed Compressors - Ariel Corporation
Section 4 Part Replacement For Models: JGH:E:K:T b. Snap Ring and Spring Retainer • Thread a nut onto a threaded rod that is a few inches longer than the height of the adapter. 1 2 3 4 5 • Slide a washer wider than the main bore of the adapter down to the nut. • Insert the threaded rod end with no nut into the main bore of the adapter until it protrudes from the base of the adapter. • Slide a washer wide enough to overlap the spring retainer but less wide than the snap ring onto the threaded rod protruding from the base. • Thread a nut onto the threaded rod pro- 6 7 8 9 1 3 4 1. 2. 3. 4. 5. 6. 7. 8. Washer Snap Ring Threaded Rod Nut Backup Ring Spring Retainer Compression Spring V-packing or Seal truding from the base. Tighten the nut until the compression spring compresses enough to separate the spring retainer from the snap ring. • Use snap ring pliers to remove snap ring. FIGURE 4-4 Spring Compression for Snap Ring Removal • Remove the nut from the threaded rod, then remove the threaded rod and washers from the main bore of the adapter. 12. Remove spring retainer, compression spring, and backup ring from the adapter counterbore. 13. Remove V-packing or seal from adapter counterbore. Find a strong, foot-long metal 3/16” rod or pipe and bend about .75” at 90°. Insert the rod into the adapter counterbore and slide the .75” beneath the V-packing or seal. Pull up on the rod or pipe to pull the V-packing or seal from the adapter counterbore. VVCP Reassembly Clean all VVCP parts of all debris, rust, etc. Replace parts if excessively worn or damaged. Replace V-packing or seal if excessive gas leakage occurs at the packing vent. See Fig. 4-3 and Fig. 4-4. 1. With face up, place the head on a table. With base facing up, place the adapter beside the head. 2. Depending on VVCP size, Ariel machines a groove for the O-ring into either the face of the head or the base of adapter. Oil and insert a new O-ring into O-ring groove. 3. Install the piston ring onto the piston. 4. Oil the head cavity walls, then insert piston stem and piston assembly into the head cavity. 5. Oil the adapter counterbore walls and insert V-packing or seal. The V-packing or seal consists of five partitions; insert V-packing or seal into the counterbore with the thickest partition down and the thinnest partition up. Use a solid cylinder of wood or metal as a ram and tap the V-packing or seal two or three times into the counterbore to ensure proper seating. 6. Insert backup ring into adapter counterbore. 7. Insert compression spring into adapter counterbore. 8. Place spring retainer on top of the compression spring. 9. Some adapters use a bolted retaining plate while others use a snap ring and spring retainer: a. Retaining Plate - Place the retaining plate on top of the spring retainer and press down to compress the compression spring. thread retaining plate bolts through the retaining plate and into the adapter base. Tighten the retaining plate bolts hand tight. b. Snap Ring and Spring Retainer PAGE 4-4 3/11
For Models: JGH:E:K:T Section 4 Part Replacement • Compress the compression spring (see Fig. 4-4). • Use snap ring pliers to install the snap ring above the spring retainer. • Remove the nut from the threaded rod, then remove the threaded rod and washers from the main bore of the adapter. 10. Grease piston stem threads and thread adapter clockwise onto piston stem. Thread adapter until the socket head bolt match marks on its base align with the match marks on the head. 11. Install the socket head bolts. Tighten socket head bolts hand tight. 12. Thread locking handle onto the piston stem with thread protector facing up and lock it. 13. Slide the adjustment handle onto the piston stem and use a slugging hammer to pound it down evenly onto the tapered fit. 14. Thread the locknut onto the piston stem. While the torque for the locknut is not critical, tighten it enough to prevent adjustment handle from loosening. 15. Slide thread protector bellows onto the adjustment handle lip and verify that it grips securely. 16. Apply 3-4 pumps of all-purpose petroleum grease with a grease gun at the grease fitting. VVCP Installation 1. Slide a crane hook through the VVCP eyebolt and move the VVCP to the cylinder. 2. Apply an anti-sieze lubricant to both the new head gasket and the cylinder seating surface. Stick the new head gasket to the cylinder seating surface. 3. Slide the VVCP into the cylinder and align the adapter flange bolt holes with the cylinder bolt holes. 4. Lubricate flange bolt threads and seating surfaces with petroleum type lubricant and install bolting. See Table A-3 in Appendix A for proper torque value and torque procedure. 5. Reconnect packing vent. To install a new VVCP, re-set crank end/head end feeler clearances with VVCP FIGURE 4-5 VVCP Installation completely closed and check total piston end clearance. See Table B-1 in Appendix B. VVCP Adjustment 1 2 3 4 1. Cylinder 2. Head Gasket Users may change VVCP clearance volume with the compressor running or stopped. The expected change in compressor flow and absorbed power depends on compression ratio and properties of the compressed gas. Consult packager instructions regarding where to set the VVCP. Also see the VVCP data sheet in the Parts Book. To open VVCP to a desired percentage: 1. Loosen the locking handle so the adjustment handle can turn freely. 2. Find the VVCP dimension plate (see Fig. i-1). 3. Subtract the fully closed dimension from the fully open dimension. The Ariel Performance program also lists these dimensions if the VVCP dimension plate is missing. 4. Multiply the step 3 result by the desired percentage expressed as a decimal. 5. Add the step 4 result to the fully closed dimension. 6. Turn the adjustment handle until the measurement from the base of the locking handle, when locked, to the top of the adjustment handle equals the step 5 result. 7. Tighten the locking handle to prevent the VVCP from changing position. 3/11 PAGE 4-5 5 3. Eyebolt 4. Packing Vent 5. Flange Bolts
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For Models: JGH:E:K:T Section 4 Part Replacement<br />
• Compress the compression spring (see Fig. 4-4).<br />
• Use snap ring pliers to install the snap ring above the spring retainer.<br />
• Remove the nut from the threaded rod, then remove the threaded rod and washers from the<br />
main bore of the adapter.<br />
10. Grease piston stem threads and thread adapter clockwise onto piston stem. Thread adapter until<br />
the socket head bolt match marks on its base align with the match marks on the head.<br />
11. Install the socket head bolts. Tighten socket head bolts hand tight.<br />
12. Thread locking handle onto the piston stem with thread protector facing up and lock it.<br />
13. Slide the adjustment handle onto the piston stem and use a slugging hammer to pound it down<br />
evenly onto the tapered fit.<br />
14. Thread the locknut onto the piston stem. While the torque for the locknut is not critical, tighten it<br />
enough to prevent adjustment handle from loosening.<br />
15. Slide thread protector bellows onto the adjustment handle lip and verify that it grips securely.<br />
16. Apply 3-4 pumps of all-purpose petroleum grease with a grease gun at the grease fitting.<br />
VVCP Installation<br />
1. Slide a crane hook through the VVCP eyebolt and<br />
move the VVCP to the cylinder.<br />
2. Apply an anti-sieze lubricant to both the new head<br />
gasket and the cylinder seating surface. Stick the new<br />
head gasket to the cylinder seating surface.<br />
3. Slide the VVCP into the cylinder and align the adapter<br />
flange bolt holes with the cylinder bolt holes.<br />
4. Lubricate flange bolt threads and seating surfaces<br />
with petroleum type lubricant and install bolting. See<br />
Table A-3 in Appendix A for proper torque value and<br />
torque procedure.<br />
5. Reconnect packing vent. To install a new VVCP, re-set<br />
crank end/head end feeler clearances with VVCP<br />
FIGURE 4-5 VVCP Installation<br />
completely closed and check total piston end clearance. See Table B-1 in Appendix B.<br />
VVCP Adjustment<br />
1 2 3 4<br />
1. Cylinder<br />
2. Head<br />
Gasket<br />
Users may change VVCP clearance volume with the compressor running or stopped. The expected<br />
change in compressor flow and absorbed power depends on compression ratio and properties of the<br />
compressed gas. Consult packager instructions regarding where to set the VVCP. Also see the<br />
VVCP data sheet in the Parts Book. To open VVCP to a desired percentage:<br />
1. Loosen the locking handle so the adjustment handle can turn freely.<br />
2. Find the VVCP dimension plate (see Fig. i-1).<br />
3. Subtract the fully closed dimension from the fully open dimension. The <strong>Ariel</strong> Performance program<br />
also lists these dimensions if the VVCP dimension plate is missing.<br />
4. Multiply the step 3 result by the desired percentage expressed as a decimal.<br />
5. Add the step 4 result to the fully closed dimension.<br />
6. Turn the adjustment handle until the measurement from the base of the locking handle, when<br />
locked, to the top of the adjustment handle equals the step 5 result.<br />
7. Tighten the locking handle to prevent the VVCP from changing position.<br />
3/11 PAGE 4-5<br />
5<br />
3. Eyebolt<br />
4. Packing Vent<br />
5. Flange Bolts
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