QR 340 Quincy Compressor
50216-105, July 1999 1 3501 Wismann Lane, Quincy IL. - 62305-3116
INTRODUCTION
This manual provides information for the following
QR-25 Series, Model 340 (Record of Change 105)
compressor versions:
P Control Version P
plain head assembly & no controls
PUL Control Version PUL
plain head assembly with a pressure
relief valve
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 340 has a
5-1/4" low pressure bore, a 3" high pressure bore, a
3-1/2" stroke and can be run at 400-900 r.p.m.
Available options included in this manual:
-hooded air filter
-hooded air filter / silencer
CHANGES
since previous printing dated January 1999:
Valve adjustment bolt and jamnut were com-
bined to create an assembly.
Added crankcase lubricant capacity.
TABLE OF CONTENTS
Serial Number Identification ................................. 2
Ordering Replacement Parts ................................ 2
Quin-Cip Oil ........................................................... 2
Crankcase Lubricant Capacit ............................. 2
Crankshaft Group .................................................. 3
Crankcase Group................................................... 4
Bearing Carrier Groups
with oil filter .....................................................5-6
less oil filter ..................................................... 7-8
Connecting Rod & Piston Groups
low pressure ..................................................9-10
high pressure .............................................. 11-12
C linder & Head Groups
Control Version P ........................................ 13-14
Control Versions L, S, LS, LVD .................. 15-16
Head Assemblies
Control Versions P ...................................... 17-18
Control Versions L, S, LS, LVD .................. 19-20
Control Groups
Version L ........................................................... 21
Version S ........................................................... 22
Version LS ........................................................ 23
Version LVD ...................................................... 24
Pilot Valves .......................................................... 25
Pilot Valve Repair Kit .......................................... 25
Differential Setting Charts .................................. 25
Suction Valve Unloader Assemblies .................. 26
H draulic Unloader Assemblies ......................... 27
Decals ................................................................... 28
Gasket Set ............................................................ 28
Recommended Spare Parts ................................ 28
Kits ....................................................................... 28
T pical Unit Repair Parts List ............................. 29
