4-10. TROUBLESHOOTING SYMPTOM INDEX

Section III. ORGANIZATIONAL TROUBLESHOOTING

Table 4-2. Mechanical Troubleshooting Procedures.

TM-5-4310-452-14 Compressor Air: Rotary Screw 750 CFM 100 PSI Wheel-Mounted DED SULLIAR Model 750 DP Manual
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TM 5-4310-452-14 4-10. TROUBLESHOOTING SYMPTOM INDEX. Troubleshooting Procedure Page MECHANICAL TROUBLESHOOTING COMPRESSOR Air discharge pressure too low.................................................................................................... 4-13 Blowdown valve operates erratically........................................................................................... 4-12 Compressor air unsuitable for sandblasting (excessive oil in air outlet)....................................... 4-13 Excessive oil carryover .............................................................................................................. 4-12 Excessive vibration .................................................................................................................... 4-14 Oil: Blows back into compressor air cleaner ............................................................................... 4-13 Consumption too high .......................................................................................................... 4-13 Safety relief valve relieves ......................................................................................................... 4-14 Start pressure too high ............................................................................................................... 4-14 Unit will not unload ..................................................................................................................... 4-14 ENGINE Difficult to start/performs poorly ................................................................................................ 4-11 Exhaust smokes excessively ..................................................................................................... 4-11 Surges when running ................................................................................................................. 4-12 Turns off prematurely ................................................................................................................ 4-11 Vibrates excessively .................................................................................................................. 4-11 Will not: Run at correct speed............................................................................................................ 4-12 Start .................................................................................................................................... 4-11 ELECTRICAL TROUBLESHOOTING Ammeter: Indicates constant "charge" condition with engine idling ...................................................... 4-17 Indicates no/low "charge" condition with engine idling .......................................................... 4-16 Engine: Cranks, but will not start ...................................................................................................... 4-16 Cranks slowly ...................................................................................................................... 4-15 Will not crank ...................................................................................................................... 4-15 4-10

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