Product Manual

QP-7.5 Quincy Compressor
2022201401, July 2014 1 3501 Wismann Lane, Quincy IL 62305-3116
INTRODUCTION
This manual provides information for the Model QP-
7.5 reciprocating compressor, per Record of Change
203.
The Model QP-7.5 is an aircooled, two stage, two
cylinder, pressure lubricated compressor, with up to
175 PSI continuous pressure capability. It has a 4.5"
low pressure bore and a 2.50" high pressure bore,
with a 3" stroke. This compressor can be run at 500-
1060 RPM.
CHANGES
Since previous printing dated December 2011:
The bearing carrier is now equipped with a new
oil filter.
TABLE OF CONTENTS
Serial Number Identication .................................. 2
Ordering Replacement Parts .................................2
Crankcase Lubricant Capacity ..............................2
Quin-Cip-D & Quin-Cip Lubricant .........................2
Crankshaft Group
...................................................3
Crankcase Group....................................................4
Sterling Blue Oil & Filters Kit
................................4
Sterling Blue Ring Kit .............................................5
Connecting Rod & Piston Groups .....................5-6
Cylinder & Head Groups
.....................................7-8
Gasket Set
...............................................................8
Sterling Blue Valve Kit ...........................................7
Control Piping Schematics .................................... 9
Pilot Valves............................................................10
Differential Setting Chart .....................................10
Overhaul Kit ..........................................................10
Suction Valve Unloader Assemblies .................. 11
Decals .................................................................... 11
Typical Unit Repair Parts List .........................12-14