Heavy Duty Balanced Opposed Compressors - Ariel Corporation
Heavy Duty Balanced Opposed Compressors - Ariel Corporation
Heavy Duty Balanced Opposed Compressors - Ariel Corporation
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FOR MODELS: JGZ AND JGU SECTION 5 - MAINTENANCE<br />
Tighten Connecting Rod Bolting to<br />
the Torque and Turn Values in Table<br />
1-11 on Page 1-18. The additional<br />
degrees turn is achieved using the<br />
separately purchased hydraulic<br />
connecting rod/main bearing-caps<br />
cap screw torque turn tool, see Figure<br />
7-12 on Page 7-7.<br />
Note: Install Joint Match<br />
Marks/Throw Numbering Up<br />
FIGURE 5-4 CONNECTING ROD - TYPICAL<br />
Correct Orientation of the<br />
Rod is with Bearing Shell<br />
Notches at Top Joint.<br />
Bearing Shell<br />
2-Piece<br />
Bushing<br />
11. Reinstall the top-cover spacer bars. Be sure that spacer bar o-rings in the crosshead<br />
guide under the cap screw heads are in place and in good condition,<br />
replace if necessary. All spacer bars are match-marked for proper location. They<br />
must be reinstalled in their original location. Utilize Top-Cover Spacer Bar Alignment<br />
Tools (A-11987). These spacer bars are also used as gasket surfaces to<br />
top covers. See Figure 7-4 on Page 7-3. Lubricate cap screws with lubricating oil<br />
or Lubriplate 630. Install and tighten all spacer bar cap screws to the value listed<br />
in Table 1-11 on Page 1-18.<br />
12. Examine the top cover and side cover gaskets. Install new gaskets if there is any<br />
doubt that old gaskets are not in a good usable condition. Top cover gaskets are<br />
to be replaced as a complete set, as used and new gasket pieces installed side<br />
by side under the same top cover can cause oil leaks. Before installing a gasket,<br />
apply a thin coating of anti-seize lubricant to both sides or to the metal seating<br />
surfaces. This will help to hold the gasket in place during assembly and aid in<br />
ease of removal. Reinstall the top covers and crosshead guide covers. Tighten<br />
all cover cap screws hand-wrench tight.<br />
13. After replacing bearings or connecting rod it is important to check the bearing<br />
break-in temperatures. When starting the compressor after the first 10 minutes<br />
of run time, after one hour and after 4 hours, shutdown compressor and remove<br />
the frame top covers. Immediately (within 5 minutes after shutdown), check the<br />
bearing cap temperatures using a temperature probe (hand held thermocouple<br />
probe or infrared thermometer), record values on a copy of form on page 5-68. If<br />
a variation more than 8°F (4.5°C) is measured between any two connecting rod<br />
bearings, contact <strong>Ariel</strong>.<br />
CAUTION: DO NOT PLACE ANY PART OF YOUR BODY INSIDE THE CRANKCASE<br />
WITHOUT OBSERVING THE CAUTION ON PAGE 5-1.<br />
14. Complete remaining information on the copy of “BEARING LOG FORM/CONDI-<br />
TIONS AFTER REPLACING BEARINGS” on Page 5-68” and fax copy to <strong>Ariel</strong><br />
Technical Services.<br />
PAGE 5 - 8 7/09