TK 55676-19-IM-EN
89
Verifying Engine Operation
IMPORTANT
YOU MUST VERIFY AND ADJUST ENGINE RPM’S
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NNoottee:: See Engine RPM Adjustment tag attached to APU engine or procedure below.
1. Start APU/Engine
2. Adjust engine speed to 2400–2500 RPM RPMs
3. Allow engine to reach operating temperature.
4. Add compressor and alternator load to the engine, adjust engine speed to 2350 RPMs
Figure 49. Engine RPM Adjustment Tag Shown
With the engine running:
• check cooling system for leaks
• check for fuel leaks
• check for oil leaks
• check for exhaust leaks
• verify with a digital meter that the charging voltage at the battery cables is at least 13.6 Vdc.
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