Description Of Components - Boss 36 BHP PISTON Service And Maintenance User Manual

Compressor Assembly - The Boss 36 BHP hydraulic drive piston compressor assembly is a positive
displacement, intermittent-flow, reciprocating unit. The piston compressor consists of a crankshaft, oil filter,
oil pump, four connecting rods, pistons, cylinders, and valve assemblies. As the crankshaft rotates, the
pistons move up and down. As they move down, a vacuum is created above the piston which allows the
reed valve to open and fill the area above the piston with air. When the pistons move back up, this air is
discharged from the compressor. Oil lubricates the bearings and cylinder walls as the crankshaft rotates,
ensuring that the system stays cool.
Hydraulic Oil Cooling Systems - The compressor cooling system consists of a hydraulic cooler mounted
on the compressor frame. Cool air is drawn through the vented end panel and flows over the compressor
surface and through the hydraulic cooler, exiting out the front vented panel . Allow for adequate clearance
(10") for the air to exit. Also, the package location should not be subjected to air temperatures above
ambient.
Fluid Level Sight Glass - This sight glass indicates the fluid level in the crank case. Proper level should be
in the middle of the sight glass. Check this level when the compressor is disengaged and the vehicle is
parked on level ground. Fluid level should be checked prior to each use.
Electrical System - The Boss compressor's standard electrical system consists of:
-Hydraulic oil cooler fan assembly and relay.
-12VDC N.O. hydraulic solenoid.
-Switch relay for customer equipment interface during compressor operation.
Pressure Switch - The pressure switch is a N.C. electrical switch set to open at 150 PSI and set to close
at 115 PSI. The pressure switch controls the N.O. hydraulic solenoid. If service air pressure is under 150
PSI, the pressure switch will remain in its normally closed state, keeping the N.O. hydraulic solenoid closed
and the compressor producing air. If the service valve is closed or the tool using the air is off, service line
pressure will rise to 150 PSI. This will cause the pressure switch to open and deactivate the hydraulic
solenoid. The compressor will stop making air. If the tool is turned on or the service valve is opened, the
service line pressure will drop. When the pressure falls to 115 PSI, the pressure switch will close, energiz-
ing the N.O. hydraulic solenoid forcing flow to the motor and the compressor will start producing air to
meet the demand.

Description of Components

Most air tools operating pressure range is between 90 and 125 psi.
Operating above the tools' recommended pressures will decrease the
life of the tool. Higher operating pressure can also over torque nuts
and bolts fatiguing the fastener and mating parts. Strictly adhere to tool
operating pressures and torque standards set forth by the tool manu-
facturer and the specifications of the equipment that work is being
performed on.
Never adjust the pressure switch to a setting of greater than 150 PSI.
Operating the compressor at greater than 150 PSI may result in per-
sonal injury and property damage.
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