Figure 5-19. Compressor Oil Filter
When oil flow stops, install drain plug. Service
compressor oil filter, refer to COMPRESSOR
OIL FILTER (Section V), at proper interval.
COMPRESSOR AIR FILTER (Section V), at
Remove compressor oil level dipstick from
filler pipe. Fill compressor oil sump with four
quarts of clean lubricating oil (refer to Table 5-3).
When compressor oil filter is changed, fill sump
with five quarts of oil. Install dipstick.
Remove container from beneath compressor
drain and discard old oil.
5-28. Compressor Oil Filter (Figure 5-19). To change
the compressors oil filter, proceed as follows:
Wipe the contact surface of the new filter clean
of all dirt and coat the rubber gasket with clean
Clean the mating surface of the adapter on the
compressor. To install filter, hand turn the new
filter clockwise until the gasket just contacts the
mounting bracket. Do not use a strap wrench to
Figure 5-20. Priming Air Compressor Assembly Oil
Hand turn the filter an additional half turn
Air Compressor Assembly Oil Pump.
To prime the air compressor assembly
oil pump, proceed as follows:
After changing the oil filter or putting an
air compressor unit into service, which
has been idle or in storage for a
considerable length of time, it may be
necessary to prime the compressor
pump to obtain a correct air compressor
oil pressure indication.
Disconnect oil filter-to-oil pump tube assembly (I)
at adapter (2) on oil filter mounting bracket (3).
Raise oil filter-to-oil pump tube (I) slightly above
Using a pressure type oilier (4), containing
compressor lubricating oil as specified in Table
5-3, fill oil filter-to oil pump tube (I) until oil flows
Connect oil filter-to-oil pump tube (1) to adapter