Pressure does not rise
Tanabe LSHC-20B/30A/40A, two-stage air-cooled reciprocating air compressor (emergency / service air)
Possible cause
Pipe leak, damaged valve or dirt on seat, worn piston rings
What to do
Manufacturer's manual, p. 28Repair leak, clean or replace valve, replace rings
See the assembly on the 3D model
Other Tanabe LSHC-20B/30A/40A faults
Abnormal noise from the cylinderForeign matter in cylinder, worn cylinder/piston, too thin head gasket, broken valve plate or spring, worn piston pin bushAbnormal noise in the crankcaseWorn main or rod bearing, loose connecting rod boltHigh delivery air temperatureLeaking delivery valve, faulty valve seat gasket, carbon on valves, poor coolingHeavy carbon on valvesHigh oil consumption, wrong oil level or poor oilOil pressure does not increaseLow oil, worn bearing metal, reverse rotationHigh oil consumptionWorn piston/cylinder or rings, oil above H markExcessive vibrationLoose bolts or flywheel, weak foundationPiston seizureDust entering the cylinderV-belt slippingSeized piston or bearing, belt too slack
From the manufacturer's manual “EM-20-4 INSTRUCTION MANUAL FOR TANABE AIR COMPRESSOR TYPE LSHC”. Check against the original on board before work.