Table Of Contents - Quincy Compressor QR-25 Series Parts Manual

INTRODUCTION
This manual provides information for the following
QR-25 Series, Model 310 (Record of Change 105)
compressor versions:
P Control Version P
plain head assembly & no controls
L Control Version L
head assembly with 2 unloader towers &
a hydraulic unloader
S Control Version S
head assembly with 2 unloader towers &
a pilot valve
LS Control Version LS
head assembly with 2 unloader towers, a
hydraulic unloader, & a pilot valve with
a check valve assembly
LVD Control Version LVD
head assembly with 2 unloader towers, a
hydraulic unloader, & a pilot valve with
a lockout & check valve
These compressors are aircooled, two stage, two
cylinder, pressure lubricated compressors, with up
to 200 p.s.i. continuous pressure capability (201 to
500 p.s.i. intermittant pressure capability with proper
configuration; consult factory). The Model 310 has a
3.5" low pressure piston bore and a 2.5" high pres-
sure piston bore and a 2.5" stroke and can be run at
400-920 r.p.m.
Available options included in this manual:
-high pressure rated cylinder and head
-spin-on oil filter
-hooded air filter
-hooded air filter / silencer
CHANGES
since previous printing (dated June 2000):
The crankcase breather was redesigned.
QR 310
50214-105, March 2005

TABLE OF CONTENTS

Serial Number Identification ................................. 2
Ordering Replacement Parts ................................ 2
Quin-Cip Oil ........................................................... 2
Crankcase Lubricant Capacity ............................. 2
Crankshaft Group ............................................... 3-4
Crankcase Group ................................................ 5-6
Bearing Carrier Groups
with oil filter ..................................................... 7-8
less oil filter ................................................... 9-10
Connecting Rod & Piston Groups
High Pressure .............................................. 11-12
Low Pressure ............................................... 13-14
Cylinder & Head Groups
Control Version P ........................................ 15-16
Control Version L ........................................ 17-18
Control Versions S, LS, LVD ...................... 19-20
Head Assemblies
Control Version P ........................................ 21-22
Control Version L ........................................ 23-24
Control Versions S, LS, LVD ...................... 25-26
Control Groups
Version L ........................................................... 27
Version S ........................................................... 28
Version LS ........................................................ 29
Version LVD ...................................................... 30
Pilot Valves .......................................................... 31
Pilot Valve Repair Kit .......................................... 31
Differential Setting Charts .................................. 31
Suction Valve Unloader Assemblies .................. 32
Gasket Set ............................................................ 33
Kits ....................................................................... 33
Recommended Spare Parts ................................ 34
Decals ................................................................... 34
Typical Unit Parts List .................................... 35-36
1 3501 Wismann Lane, Quincy IL - 62305-3116
Quincy Compressor