Technical
Service
Inspection
Monthly
Weekly
COMPRESSOR-Continued
Remove valve if necessary and clean thoroughly. Replace all broken
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or damaged parts.
Unloader Pilot Valve. Check unloader piot valve for proper
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operation. Compressor should unload approximately 100 psi. If
pilot valve chatters during operation, the differential range is set
too close.
Adjust pilot valve setting if necessary.
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Cylinder Head Valves and Gaskets. Inspect cylinder- head mounting
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bolts for tightness. The correct torque-wrench pull on cylinder-
head bolts is 90 foot- pounds and on valve nuts is 25 foot-pounds.
Check for leaks.
Tighten cylinder-head and
valve mounting bolts if
necessary.
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Correct any leaks.
Crankcase and Oil Filter. Inspect crankcase, oil filter, and lines and
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connections for leaks.
Change crankcase oil and replace oil filter elements as directed in
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the current lubrication order. See that all connections are tight.
Air Cleaners. Inspect air cleaners for secure mountings and tighten
connections.
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Service air cleaners as directed in the current lubrication order. See
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that all connections are tight.
Section IV. TROUBLESHOOTING
48. Use of Troubleshooting Section
This section provides information useful in diagnosing and correcting unsatisfactory operation or failure of the air
compressor or any of its components. Each trouble symptom stated is followed by a list of probable causes of the trouble.
The possible remedy recommended is described opposite the probable cause.
Note
All references in this section to paragraphs in chapter 5 (pars. 176 through 235)
pertain to operations that are the responsibility of the field
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