BENDIX BA-921 COMPRESSOR-STD-CLOSED ROOM Dados de serviço - Página 14
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BACK / RETOUR
COMPRESSOR TROUBLESHOOTING CHART (Continued)
SYMPTOMS
4. Compressor fails to
unload.
5. Compressor leaks oil.
6. Compressor constantly
cycles (compressor
remains unloaded for a
very short time).
14
CAUSE
A. Faulty governor or
installation.
B. Faulty or worn unloader
pistons or bores.
A. Damaged mounting gasket. A. Check the compressor mounting bolt torque. If
B. Cracked crankcase or end
cover.
C. Loose crankcase end
cover or bottom cover.
D. Loose oil supply or return
line fittings.
E. Porous compressor casting. E. Replace the compressor if porosity is found.
F. Mounting flange or end
cover, o-ring or gasket
missing, cut or damaged.
A. Leaking compressor
unloader piston.
B. Faulty Governor installation. B. Test the governor for proper operation and
C. Excessive system leakage. C. Test for excessive system leakage as instructed
D. Excessive reservoir
contaminants.
REMEDY
A. Test the governor for proper operation and
inspect air lines to and from it for kinks or
restrictions. Replace or repair the governor or
connecting air lines
B. Inspect for worn, dirty or corroded unloader
piston and bore. Replace as necessary.
the mounting bolt torque is low, replace the
compressor mounting gasket before re-torquing
the mounting bolts.
B. Visually inspect the compressor exterior for
cracked or broken components. Cracked or
broken crankcases or mounting flanges can be
caused by loose mounting bolts. The end cover
can be cracked by over-torquing fitting or plugs
installed in the end cover. Replace or repair the
compressor as necessary.
C. Check the cap screw torques and tighten as
necessary. Replace gaskets or o-ring.
D. Check the torque of external oil line fittings and
tighten as necessary.
F. Replace as necessary.
A. Repair or replace as necessary. Remove the
compressor inlet air strainer or fitting. With the
compressor unloaded (not compressing air),
listen for air escaping.
inspect air lines for kinks or restrictions. Replace
or repair the governor or connecting air lines as
required.
in Symptom #3 Remedy E. Reduce leakage
wherever possible.
D. Drain reservoirs.