Quantcast EXHAUST TEMPERATURE IS TOO HIGH

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TROUBLESHOOTING
TESTING AND ADJUSTING
33. EXHAUST TEMPERATURE IS TOO HIGH
Cause:
Correction:
Air Inlet System Has A Leak
Check pressure in the air intake manifold.  Look for
restrictions at the air cleaner. Correct any leaks.
Exhaust System Has A Leak
Find cause of exhaust leak. Make repairs as
necessary.
Air Inlet or Exhaust System Has A Restriction
Remove restriction.
Wrong Fuel Injection Timing
Make an adjustment to the timing. See Subject, FUEL
TIMING.
34. AIR STARTING MOTOR TURNS SLOWLY OR HAS A LOSS OF POWER
Cause:
Correction:
Low Supply Air Pressure
Make an increase to the air supply pressure.
Pressure Regulator Adjustment Not Correct
Make an adjustment to the air pressure regulator.
Oiler Not Working Correctly
Check the oiler, inlet hose, fitting and oil supply hose to
make sure they are vacuum tight and free of leaks.
Clean, make adjustment, tighten all fittings, fill oiler or
make a replacement, if necessary.
Worn Motor Parts
Disassemble the motor and make an inspection of the
parts. A guide for determining worn parts that cannot be
used again is as follows:
a. Install a set of new vanes if any vane is cracked,
damaged or worn to the extent that its width is 32
mm (1.25 in.) at either end.
b. Replace rotor bearings if any roughness or
looseness is apparent in the bearings.
c. Replace rotor if the body has deep scoring that
cannot be removed with the use of emery cloth.
d. Replace cylinder if there are any cracks or deep
scoring.
e. Clean up end plate scoring with emery cloth
placed on a flat surface.
Air Leakage
Check the motor for worn seals.  Plug the exhaust.
Apply 205 kPa (30 psi) air to the inlet and put the unit in
nonflammable fluid for 30 seconds. If bubbles appear,
make a replacement of the motor seals.
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