Makita MAC5501G, Operating Instructions Manual

Page: 15 / 22

PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION
Will not start Please refer to Honda manual
included
Low pressure Safety valve leaks Replace safety valve
Drain cock open Close drain cock
Loose tubes or fittings Tighten fittings
Dirty or plugged air filter Clean or replace as necessary
Defective unloader valve Replace unloader valve
Oil in Too much oil in the crank- Drain oil and fill to proper level
Discharge case
Improper oil viscosity
Drain and replace oil
Compressor overheated Air pressure regulated too
high
Restricted air filter Clean or replace air filter
Worn piston rings Replace piston rings
Compressor Dirty compressor head, cylin- Clean with compressed air
Overheats der or intercooler
Clogged inlet filter
Clean or replace as necessary
Operating pressure too high Reduce operating pressure
Low oil or wrong oil being used Drain and replace oil
Compressor cycle too long. Allow for longer rest between
Proper cycle is 50-60% on Cycles
Stop/Start operation
Compressor Pilot valve differential adjust- Replace worn components as
loads & un- ed too close. necessary
loads or idols Make necessary adjustments
up & down Leaks in air system Check for leaks
excessively Worn or loose drive belts Tighten V-belts or replace
Defective compressor valves Replace valves
Compressor too small for Upgrade to larger compressor
intended use
Page 15
TROUBLE SHOOTING