Heavy Duty Balanced Opposed Compressors - Ariel Corporation

Section 4 Part Replacement For Models: JGH:E:K:T
5. Install a new square key, 3/16 x 1 inches (4.8 x 25 mm). First verify it fits into the new sprocket. If
too thick, polish the key with an emery cloth on a flat surface until it easily slides into the notch.
The top edge may also require a little filing.
6. Install new sprocket to the original measurement between the sprocket drive face and the pump
mounting flange face. When in position, tighten set screws.
7. Lubricate both sides of cover gaskets with anti-sieze lubricant or multi-purpose grease to ease
future removal. Install new end cover gaskets.
8. Reinstall pump onto end cover. Using a straight edge, to within 1/32 inch (1 mm), check alignment
to crankshaft drive sprocket with crankshaft centered in end play. If misaligned, adjust
sprocket position as needed.
9. Adjust chain according to “Chain Adjustment” on page 4-40.
10. Reinstall all piping to pump.
Force Feed Lubricator Chain Sprocket Replacement
1. With a good machinist rule, measure
exact distance from inside face
of auxiliary end cover to near face
of lubricator sprocket. Note measurement
for proper positioning of
new sprocket. Remove chain.
2. Remove sprocket set screw and
sprocket. Detach all tubing to lubricator.
3. Remove the four mounting bracket
capscrews and lubricator.
1. Force Feed
Lubricator
2. O-Ring (oil
before assembly)
3. Sprocket
4. No. 204 Woodruff
Key
5. Set Screw
6. Mounting Flange
Capscrews (4)
FIGURE 4-50
Typical Force
Feed Lubricator
4. With the lubricator on the bench,
remove Woodruff Key from shaft
and file shaft to remove burrs raised by set screw cup point. Oil and install a new O-ring.
5. Install a new Woodruff Key after verifying it fits into the new sprocket. If too thick, polish it with an
emery cloth on a flat surface until it easily slides into the notch. The top edge may also require a
little filing.
6. After new key installation, verify new sprocket fits, oil new O-ring, and remount lubricator to the
end cover.
7. Slide new sprocket onto the shaft and set to dimension measured in step 2. Tighten set screw.
8. Using a straight edge, to within 1/32 inch (mm), check alignment to crankshaft drive sprocket with
crankshaft centered in end play. When aligning this sprocket with the idler sprocket, take into
account that the idler sprocket is thinner than the other sprockets. If misaligned, adjust sprocket
position as needed.
9. Install chain and adjust according to “Chain Adjustment” on page 4-40.
10. Re-attach all tubing to lubricator.
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