(1) With air discharge service valves closed,
(4) Readjust regulator adjusting screw, as
and engine operating at idle speed, adjust
air pressure regulator adjusting screw (5,
(5) Cycle the air compressor several times by
psi (8.08-8.54 KG/CM ) on air pressure
opening and closing the air discharge
Observe air pressure
gauge each time to ensure pressure
(2) If air pressure rises above 117 psi (8.54
setting remains stable.
counterclockwise to decrease pressure, if
below 115 psi (8.08 KG/CM ) turn
adjusting screw after pressure is set.
clockwise to raise pressure.
(3) Bleed off excess air by opening air
discharge service valve. After excess air
is discharged, close service valve.
Section III. OIL FILTER-THERMAL BYPASS VALVE ASSEMBLY
General. The thermal bypass valve portion of
Between these two temperatures, hot and cool oil is
this assembly provides rapid warming of the compressor
being mixed to maintain a relatively constant minimum
at initial start by directing oil flow from the oil separator
assembly, through the compressor oil filter, into the
Oil Filter-Thermal Bypass Valve Assembly.
reaches approximately 150 F (66C), the thermal
a. Removal. Remove the oil filter-thermal bypass
bypass valve begins to open and directs part of the oil
through the oil cooler before it enters the oil filter. At
approximately 180F (82C), the thermal bypass valve is
fully open and all oil flow is through the oil cooler.