Ariel Heavy Duty Balanced Opposed Compressor JGP/2

Warning: This procedure requires trained personnel with PPE!

DO NOT REUSE BEARING SHELLS. Determine bearing wear by checking actual jack and crankshaft thrust clearances against the clearance limits.

High copper content in the oil analysis may be an indication of main and/or connecting rod bearing wear, and/or chain idler, crosshead, connecting rod bushings wear.

There are notches in the frame and bearing cap for the bearing tabs in order to position and maintain the position of the bearing halves.

The old bearings halves are easily slid out, tab end first.

New bearings are to be slid in (untabbed end first), and snapped into place.

On JGI models, remove the carrier bearing using a hydraulic press or jack.

Remove the frame bearing using a hydraulic jack.

Install new bearings by cooling the bushings and using the hydraulic tools.

Warning: This procedure requires trained personnel with PPE!

Crosshead pin to connecting rod bushing clearance checked and within recommended range?

Crosshead pin inspected for wear and replaced if necessary?

Existing bushing filed or sawed to reduce the tightness of the shrink fit?

Bushing drifted out without damaging the connecting rod?

New bushing installed using a hydraulic press in a qualified machine shop?

CAUTION!: DO NOT TOUCH COLD SURFACES WITHOUT PROPER INSULATION TO PREVENT INJURY. ALCOHOL IS FLAMMABLE AND SHOULD ONLY BE USED IN OPEN AIR OR A WELL VENTILATED BUILDING. AVOID SPARKS AND OPEN FLAME. AVOID ALCOHOL VAPORS WHICH MAY CAUSE INJURY TO THE TISSUES OF THE NOSE AND EYES.

AVOID EYE AND SKIN CONTACT. USE NEOPRENE OR BUTYL GLOVES, MONO-GOGGLES OR FACE-MASK AND IMPERMEABLE APRON. IT CONTAINS METHYL ALCOHOL AND IS POISONOUS IF INGESTED. SEE MANUFACTURER'S MATERIAL SAFETY DATA SHEETS FOR MORE INFORMATION. DO NOT RETURN SOLUTION TO A CLOSED CONTAINER UNTIL IT HAS REACHED ROOM TEMPERATURE OR THE CONTAINER MAY EXPLODE.

NOTE: ABSOLUTE CLEANLINESS IS REQUIRED OF BOTH THE BUSHING AND THE CONNECTING ROD TO PREVENT DIRT FROM ACCUMULATING BETWEEN THEM. ASSEMBLY MUST BE IMMEDIATE SO THAT THE BUSHING DOES NOT WARM-UP AND STICK BEFORE IT IS IN PLACE.

Safety First! Ensure the compressor is shut down and the gas system is vented before starting.

Fastener torque on gas nozzle flanges, valve caps, cylinder heads and compressor rod packing flanges checked and confirmed?

Fasteners that turn at the first month check, should be re-checked after the second month or 1300 hours. If loosening persists, consult your packager or Ariel to help determine the cause and recommend the correction.

Safety shutdown functions checked and confirmed?

Upload the frame oil sample analysis report

If the oil analysis results indicate, change oil. If an oil analysis indicates lead, tin or copper particles in the oil, check main, connecting rod and crankshaft-thrust bearing clearances.

Bearing clearances checked and within limits?

Sign off on the compressor maintenance

Check crosshead pin to crosshead pin bore and connecting rod bushing bore by removing crosshead pins.

Check for excessive wear in the auxiliary end drive chain tightener.

Check for excessive ring groove wear in pistons.

Sign off on the compressor maintenance

Examine the sprocket for signs of wear

Has the sprocket been in operation for five years or more?

If the sprocket has been in operation for five years or more, consider replacing it if the crankshaft is removed from the frame.

Drill a hole in the sprocket hub parallel to the shaft centerline

Be careful not to touch the shaft with the drill. Mark the drill with tape so you do not drill through the sprocket and into the crankshaft face.

Did the drilled hole relieve most of the shrink?

Did a couple of good radial hits with a hammer and chisel open the sprocket enough so it can be easily removed?

Sign off on the chain sprocket removal