TM 5-3805-260-24 SYMPTOMS CAUSE REMEDY governor is operating properly, replace the unloader pistons and plungers and inspect their bores in the cylinder block.  Clean lubricate as necessary.  Inspect for bent, kinked or blocked tubing leading to or from the governor. G. Faulty compressor. G. Replace or repair the compressor after determining none of the preceding installation defects exist. 33.  Compressor fails to unload. A. Faulty governor or A. Test the governor for proper operation governor installation. and inspect air lines to and from the gover- nor for kinks or restrictions.  Replace or repair the governor or its connecting air lines. B. Faulty or worn unloader. B. Inspect for worn, dirty or corroded unloader pistons or bores pistons and their cylinder block bores.  Replace as necessary. 34.  Compressor leaks oil. A. Damaged mounting A. Check the compressor mounting bolt gasket. torque.  If the mounting bolt torque is low, replace the compressor mounting gasket before retorquing the mounting bolts. B. Cracked crankcase, B. Visually inspect the compressor exterior cylinder block or end for cracked or broken components.  Cracked cover. 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. Loose end cover or C. Check the cap screw torques and tighten cylinder block cap screws. as necessary. D. Loose oil supply or return D. Check the torque of external oil line line fittings. fittings and tighten as necessary. E. Porous compressor E. Replace the compressor if porosity is casting. found. F. Mounting flange or end F. Replace as necessary. cover, O-Ring or gasket- missing, cut, or damaged. 35.  Compressor constantly cycles A. Leaking compressor A. Remove the compressor inlet air strainer (compressor remains unloader pistons. or fitting.  With the compressor unloaded unloaded for a very short (not compressing air), check for air time.) leakage around the unloader pistons. Replace as necessary. B. Faulty governor. B. Test the governor for proper operation and repair or replace as necessary. C. Excessive system. C. Test for excessive system leakage as leakage. instructed in Symptom 32, Remedy E. Reduce leakage wherever possible. D. Excessive reservoir D. Drain reservoirs. contaminants. 2-37