Quincy Air Master QT Series User manual

This manual contains important safety
information and should be made available
to all personnel who operate and/or
maintain this product. Carefully read this
manual before attempting to operate or
perform maintenance on this compressor.
Fill Out & Return
Warranty Registration Card Located Inside
Manual No. 50121M201 May 2001 Edition
Parts Manual · Record of Change 201
Quincy Air Master
QT®Series
Model QT-7.5

QT-7.5 Air Master Quincy Compressor
50121M201, May 2001 1 3501 Wismann Lane, Quincy IL 2305-311
INTRODUCTION
This manual provides information for the Model QT-7.5
reciprocating compressor, per Record of Change 20 .
The Model QT-7.5 is an aircooled, two stage, two cylinder,
pressure lubricated compressor, with up to 75 p.s.i. continu-
ous 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- 060 r.p.m.
A hooded air filter/silencer is available as an option, as well
as head unloaders.
CHANGES
since previous printing dated September 1998:
Added crankcase lubricant capacity.
Changed to heavy-duty type head bolt washer.
Added intercooler replacement kits.
Changed tank drain valve from cable operated to ball valve
operated.
Changed throttle control on engine driven units to bullwhip
cable style.
Changed Kohler engine driven base units from head
unloader style to discharge line unloader style.
Change bearing carrier and cylinder/crankcase bolts to use
new type bolt with pre-applied sealant
Crankcase was modified to accept 3/4 npt pipe plug or 3/4
npt low oil level switch.
TABLE OF CONTENTS
Model & Serial Number Identification ................. 2
Ordering Replacement Parts ................................ 2
Quin-Cip Oil ............................................................ 2
Cran case Lubricant Capacity.............................. 2
Cran shaft Group ................................................... 3
Cran case Group ................................................... 4
Connecting Rod & Piston Groups ...................... 5-8
Cylinder & Head Groups .................................. 9-12
Control Piping Schematics ................................. 13
Pilot Valves .......................................................... 14
Pilot Valve Repair Kit .......................................... 14
Differential Setting Chart .................................... 14
Suction Valve Unloader Assemblies .................. 15
Decals ................................................................... 15
Overhaul Kit ......................................................... 16
Head Kit ................................................................ 16
Recommended Spare Parts ................................ 16
Gas et Set ............................................................ 16
Typical Unit Repair Parts List ........................ 17-19

QT-7.5 Air Master Quincy Compressor
50121M201, May 2001 2 3501 Wismann Lane, Quincy IL 2305-311
Package Part No. Description
Barrel 254 D032 55 gal., SAE 0W
Pail 254 P032 5 gal., SAE 0W
Gallon 254 G032 gal., SAE 0W
Gallon Case 254 X032 (4)- gal., SAE 0W
Quart 254 Q032 qt., SAE 0W
Quart Case 254 C032 ( 2)- qt., SAE 0W
Barrel 2542D068 55 gal., SAE 20
Pail 2542P068 5 gal., SAE 20
Gallon 2542G068 gal., SAE 20
Gallon Case 2542X068 (4)- gal., SAE 20
Quart 2542Q068 qt., SAE 20
Quart Case 2542C068 ( 2)- qt., SAE 20
Barrel 2543D 00 55 gal., SAE 30
Pail 2543P 00 5 gal., SAE 30
Gallon 2543G 00 gal., SAE 30
Gallon Case 2543X 00 (4)- gal., SAE 30
Quart 2543Q 00 qt., SAE 30
Quart Case 2543C 00 ( 2)- qt., SAE 30
MODEL &
SERIAL NUMBER
IDENTIFICATION
Model & Serial Number
Identification Tag
The model & unit serial number identification tag is
located on the air tank top plate.
Record
of
Change No.
Serial Number
___________
The basic compressor serial number decal is located
on the cylinder flange. Fill in the numbers from your
compressor unit and basic compressor in the corre-
sponding spaces provided here, and reference this
page when ordering replacement parts.
All replacement parts are to be ordered through an
authorized Quincy Compressor Distributor. Insist on
genuine Quincy parts only! Failure to do so may void
warranty.
ORDERING
REPLACEMENT PARTS
Prompt service can be rendered on repair parts or-
ders if the following information is given:
Item 1) the model number, record of change num-
ber, & serial number.
Item 2) the exact part number needed. (Do not
order by item numbers.)
Item 3) the exact quantity needed.
Item 4) the preferred type of transportation.
QUIN-CIP OIL
Refer to the chart below to order QUIN- IP compres-
sor oil from your local Authorized Quincy Compressor
Distributor.
DANGER !
Follow all safety precautions outlined in the AirMasterTwo
Stage Series instruction manual.
Do not operate this compressor without a totally enclosed
belt guard or any other required safety equipment.
Air used for breathing or food processing must meet O.S.H.A.
9 0. 34 or F.D.A. 2 C.F.R. 78.3570 regulations. Failure to
do so may cause severe injury or death.
WARNING !
CAUTION !
CRANKCASE LUBRICANT
CAPACITY
Refer to the AirMaster Series instruction manual for vital
lubrication information.
CAUTION !
Model Capacity
QT-7.5 15/8 Qts. (1.5 lit.)

QT-7.5 Air Master Quincy Compressor
50121M201, May 2001 3 3501 Wismann Lane, Quincy IL 2305-311
CRANKSHAFT GROUP
Electric Motor Driven Group # 113684-002 - Engine Driven Group # 113684-004
Item Part
Number Qty. Number Description
1 1 113602X002 crankshaft assembly (incl des items 2, 3 & 4)
2 1 113602-002 crankshaft (N.S.S.; order 113602X002)
3 1 111107 ball bearing
4 1 111780 ball bearing
5 1 113944 sheave, 14.16 o.d., 1 groove, B section, CCW rotation
OR
5 1 113944-001 sheave, 14.16 o.d., 2 groove, B section, CCW rotation
6 2 110428N075 flatwasher, 3/4
7 1 114041 hex. n t, 3/4 -16 nf, left hand thread
N.S.S. = Not Sold Separate
* For electric motor driven models (1 groove sheave)
** For engine driven models (2 groove sheave)
*
**

QT-7.5 Air Master Quincy Compressor
50121M201, May 2001 4 3501 Wismann Lane, Quincy IL 2305-311
CRANKCASE GROUP 113683-002
Item Part
Number Qty. Number Description
1 1 113940-002 crankcase
2 1 2276 pipe pl g, 3/4 npt
3 2 2057 pipe pl g, 1/2 npt
4 1 113736-050 sight glass, 1/2 npt
5 1 113755 gasket, bearing carrier
6 1 113942 bearing carrier assembly
7 5 115037-L14 hex. screw, 3/8-16 nc x 1.25, grade 5, with sealant
8 1 113947 breather t be
9 1 111333 crankcase breather
10 1 40825 blank
11 1 111106 oil seal
* Install with Slic-Tite® or Teflon® tape.
*
*

QT-7.5 Air Master Quincy Compressor
50121M201, May 2001 5 3501 Wismann Lane, Quincy IL 2305-311
CONNECTING ROD & PISTON GROUP 114192
(low pressure)

QT-7.5 Air Master Quincy Compressor
50121M201, May 2001 3501 Wismann Lane, Quincy IL 2305-311
CONNECTING ROD & PISTON GROUP 114192
(low pressure)
Item Part
Number Qty. Number Description
Maintenance Parts
N.S.S. = Not Sold Separate
1 1 113936-001 connecting rod assembly (incl des items 2, 3 & 4)
2 1 113936R connecting rod (N.S.S.; order 113936-001)
3 1 113937R connecting rod cap (N.S.S.; order 113936-001)
4 2 110511-K16 taptite screw, 5/16-18 nc x 1.75
5 1 8643 piston, lp
6 1 110190-016 piston pin (N.S.S.; order 114420-050)
7 2 111105-001 piston pin pl g
8 2 2584 piston ring
9 1 7351 piston ring
10 2 112781 oil ring rail
11 1 112780 oil ring expander
8643-010 low press re piston (.010 oversize)
8643-020 low press re piston (.020 oversize)
114209 Piston Ring Set (standard) (No Color Code)
incl des all rings necessary for installing standard rings
114209-010 Piston Ring Set (.010 oversize) (L. Blue)
incl des all rings necessary for installing .010 oversize rings
114209-020 Piston Ring Set (.020 oversize) ( ellow)
incl des all rings necessary for installing .020 oversize rings
114208X Piston Assembly, LP (standard)
incl des piston, ring set, piston pin & piston pin pl gs
114208X010 Piston Assembly, LP (.010 oversize)
incl des piston, ring set, piston pin & piston pin pl gs
114420-050 Replacement Piston Pin Assembly, LP
incl des piston pin & pl gs

QT-7.5 Air Master Quincy Compressor
50121M201, May 2001 7 3501 Wismann Lane, Quincy IL 2305-311
CONNECTING ROD & PISTON GROUP 114193
(high pressure)

QT-7.5 Air Master Quincy Compressor
50121M201, May 2001 8 3501 Wismann Lane, Quincy IL 2305-311
CONNECTING ROD & PISTON GROUP 114193
(high pressure)
Item Part
Number Qty. Number Description
Maintenance Parts
N.S.S. = Not Sold Separate
1 1 113936-003 connecting rod assembly (incl des items 2, 3, 4 & 5)
2 1 113936R connecting rod (N.S.S.; order 113936-003)
3 1 113937R connecting rod cap (N.S.S.; order 113936-003)
4 2 110511-K16 taptite screw, 5/16-18 nc x 1.75
5 1 111112 needle bearing
6 1 110190-010 piston pin (N.S.S.; order 114420-051)
7 2 111105-002 piston pin pl g
8 1 113991 piston
9 3 1652 piston ring
10 2 111281 oil ring rail
11 1 111280 oil ring expander
1 113991-010 high press re piston (.010 oversize)
114210 Piston Ring Set (standard)
incl des all rings necessary for installing standard rings
114210-010 Piston Ring Set (.010 oversize)
incl des all rings necessary for installing .010 oversize rings
113991X Piston Assembly, HP (standard)
incl des piston, ring set, piston pin & piston pin pl gs
113991X010 Piston Assembly, HP (.010 oversize)
incl des piston, ring set, piston pin & piston pin pl gs
114420-051 Replacement Piston Pin Assembly, HP
incl des piston pin & pl gs

QT-7.5 Air Master Quincy Compressor
50121M201, May 2001 9 3501 Wismann Lane, Quincy IL 2305-311
CYLINDER & HEAD GROUP 113685-002
(less he d unlo ders)

QT-7.5 Air Master Quincy Compressor
50121M201, May 2001 10 3501 Wismann Lane, Quincy IL 2305-311
CYLINDER & HEAD GROUP 113685-002
(less he d unlo ders)
Item Part
Number Qty. Number Description
Maintenance Parts
N.S.S. = Not Sold Separate
* Install with Slic-Tite® or Teflon® tape.
1 1 113990 cylinder
2 1 114005 gasket, valve plate to cylinder
3 1 113946X1 valve plate assembly
4 1 113946M valve plate (N.S.S.; order 113946X1)
5 1 112380 reed valve (N.S.S.; order 113946X1)
6 1 112378-1 valve b mper (N.S.S.; order 113946X1)
7 1 112359-1 reed valve (N.S.S.; order 113946X1)
8 1 112381-1 valve b mper (N.S.S.; order 113946X1)
9 2 112359-2 reed valve , (N.S.S.; order 113946X1)
10 1 112379 valve b mper (N.S.S.; order 113946X1)
11 1 112381-2 valve b mper (N.S.S.; order 113946X1)
12 4 112728-J12 flathead screw, 1/4-20 nc x 1.00, grade 8
13 4 112373-J02 hex. n t, 1/4-20 nc
14 1 113618-002 gasket, valve plate to cylinder head
15 1 113613M001 cylinder head, plain
16 6 114595N038 hardened flatwasher, 3/8
17 6 114440-L22 hex. screw, 3/8-16 nc x 3.25, grade 9
18 1 113943 gasket, cylinder to crankcase
19 1 2961-100 press re relief valve
20 6 115037-L14 hex. screw, 3/8-16 nc x 1.25, grade 5, with sealant
21 2 110919-024 t be fitting, 90° male elbow, 3/4 t be x 3/4 npt
22 1 114004 intercooler (N.S.S.; order Intercooler Replacement Kit)
23 1 112225-2 intercooler clamp
24 1 123478-L07 hex. screw, 3/8-16 nc x .50, grade 5
1 114419-001 Valve Assembly Replacement Kit
incl des items 2, 3, 14, 16, 17 & instr ctions
1 114004K Intercooler Replacement Kit
incl des intercooler and n t / sleeve fittings
*
*
0377F 00 Air Filter
(Requires 0377E 00
Air Filter Element)
0377S 00 & 0377S 0
Hooded Air Filter / Silencer
(Requires 0377E 00
Air Filter Element)
0377E 00
Air Filter Element
QT- .5 AIR FILTERS
Standard
Optional

QT-7.5 Air Master Quincy Compressor
50121M201, May 2001 11 3501 Wismann Lane, Quincy IL 2305-311
CYLINDER & HEAD GROUP 113685-003
(with he d unlo ders)

QT-7.5 Air Master Quincy Compressor
50121M201, May 2001 12 3501 Wismann Lane, Quincy IL 2305-311
CYLINDER & HEAD GROUP 113685-003
(with he d unlo ders)
Item Part
Number Qty. Number Description
*
*
*
*
*
Maintenance Parts
N.S.S. = Not Sold Separate
* Install with Slic-Tite® or Teflon® tape.
1 1 113990 cylinder
2 1 114005 gasket, valve plate to cylinder
3 1 113946X1 valve plate assembly
4 1 113946M valve plate (N.S.S.; order 113946X1)
5 1 112380 reed valve (N.S.S.; order 113946X1)
6 1 112378-1 valve b mper (N.S.S.; order 113946X1)
7 1 112359-1 reed valve (N.S.S.; order 113946X1)
8 1 112381-1 valve b mper (N.S.S.; order 113946X1)
9 2 112359-2 reed valve , (N.S.S.; order 113946X1)
10 1 112379 valve b mper (N.S.S.; order 113946X1)
11 1 112381-2 valve b mper (N.S.S.; order 113946X1)
12 4 112728-J12 flathead screw, 1/4-20 nc x 1.00, grade 8
13 4 112373-J02 hex. n t, 1/4-20 nc
14 1 113618-002 gasket, valve plate to cylinder head
15 1 113613-001 cylinder head, nloader
16 6 114595N038 hardened flatwasher, 3/8
17 6 114440-L22 hex. screw, 3/8-16 nc x 3.25, grade 9
18 1 113943 gasket, cylinder to crankcase
19 1 2961-100 press re relief valve
20 6 115037-L14 hex. screw, 3/8-16 nc x 1.25, grade 5, with sealant
21 1 111591X1 nloader
22 1 111591X2 nloader
23 2 112708-908 "o"ring, silicone
24 1 2708 t be fitting, 90° male elbow, 1/4 t be x 1/4 npt
25 1 124351-004 t be fitting, male, 1/4 t be x 1/4 pipe
26 2 110919-024 t be fitting, 90° male elbow, 3/4 t be x 3/4 npt
27 1 114004 intercooler (N.S.S.; order Intercooler Replacement Kit)
28 1 112225-2 intercooler clamp
29 1 123478-L07 hex. screw, 3/8-16 nc x .50, grade 5
30 6 in. 110515-025 t bing, 1/4" (not shown, links items 24 & 25)
1 114419-001 Valve Assembly Replacement Kit
incl des items 2, 3, 14, 16, 17 & instr ctions
1 114004K Intercooler Replacement Kit
incl des intercooler and n t / sleeve fittings
*
0377F 00 Air Filter
(Requires 0377E 00
Air Filter Element)
0377S 00 & 0377S 0
Hooded Air Filter / Silencer
(Requires 0377E 00
Air Filter Element)
0377E 00
Air Filter Element
QT- .5 AIR FILTERS
Standard
Optional

QT-7.5 Air Master Quincy Compressor
50121M201, May 2001 13 3501 Wismann Lane, Quincy IL 2305-311
PIX 1186.eps
CONTROL PIPING SCHEMATICS
relief valve
pressure gauge
release valve
pressure switch
check valve
discharge line
pilot valve
with lockout stem
relief valve
pressure gauge
release valve
pressure switch
check valve
discharge line
pressure gauge
relief valve
check valve
discharge line
to low and high
pressure
head unloaders
pilot valve
Pilot valve is open (stem screwed out)
for Continuous Run operation
Pilot valve is closed (stem screwed in)
Control Piping
For Automatic Start/Stop
(with loadless starting)
Control Piping
For Continuous Run
Control Piping
For Dual Control
to low and high
pressure
head unloaders

QT-7.5 Air Master Quincy Compressor
50121M201, May 2001 14 3501 Wismann Lane, Quincy IL 2305-311
PILOT VALVES
Add dash # listed below to 110832 (per pressure setting) to
obtain correct pilot valve.
Add dash # listed below to 110998 (per pressure setting) to
obtain correct pilot valve.
110832 Series Pilot Valve (continuous run operation 110998 Series Pilot Valve (dual control operation
Item Part
# Qty. Number Description
1 2 screen
2 1 filter
3 1 "o"ring
4 1 see chart below pilot valve spring
5 1 ball
Can be used to repair 110832 series pilot valves onl . Cus-
tomer must specif which spring when ordering repair kit.
Pilot Valve Repair Kit 110832-051
Unload Min. Dif. Max. Dif.
(p.s.i.) (p.s.i.) (p.s.i.)
40 2 5
60 3 10
100 4 20
150 5 30
175 5 45
Applies to 110998 series pilot valves onl .
Differential Setting Chart
Dash # Load PSI Unload PSI
-100 90 100
-997 * 30-70 adj stable
-998 * 71-150 adj stable
-999 * 151-175 adj stable
* Customer to set, see differential setting chart. Additional
factor preset valves are available upon request.
Dash # Load PSI Unload PSI
-115 100 115
-140 125 140
-165 150 165
Spring Part # Unload Min. Dif. Max. Dif.
(item 4) (p.s.i.) (p.s.i.) (p.s.i.)
Differential Setting Chart
110832-052 (red) 30 2 4
"4058
"5058
"6058
"70510
110832-053 (yellow) 80 5 10
"90512
" 100 5 13
" 110 5 15
" 120 5 15
" 130 5 18
" 140 5 18
" 150 5 20
110832-054 (green) 160 5 15
" 170 5 20
" 175 5 23
Not all pilots are for use with all compressor systems. Make
sure that the pilot you order is set within the safe operating
limits of your compressor. Failure to heed this warning
could result in an explosion.
WARNING !

QT-7.5 Air Master Quincy Compressor
50121M201, May 2001 15 3501 Wismann Lane, Quincy IL 2305-311
Item Part
# Qty. Number Description
1 1 110831 serial n mber & nameplate
2 1 127889-A decal, CAUTION!, MANUAL
3 1 127889-B decal, DANGER!,"Air from this...."
DECALS
WARNING !
Installation
The pilot valve is mounted directly into the air tank. Compres-
sors in the field, not equipped with these controls, can be
converted. Consult your local Quincy Compressor Distributor
for assistance with conversion procedures.
Service
If a change in pilot valve operation is detected, re-
move the pilot valve from the air tank and check the
screen in the inlet of the pilot valve for obstructions.
Clean the screen if necessary.
Adjustment
The unloading pressure is adjustable and is regu-
lated by turning the unload adjustment hex nut (refer
to pilot valve illustrations). Turn the hex nut clock-
wise to increase and counterclockwise to decrease the
unloading pressure.
The differential (difference between unloading
and loading pressure) is set by turning the differen-
tial adjustment hex nut (refer to pilot valve illustra-
tions). Increase the differential pressure by turning
the hex nut clockwise - decrease by turning counter-
clockwise. Make all adjustments in small increments.
Tighten the locknuts after adjustment.
SUCTION VALVE
UNLOADER ASSEMBLIES
Description
The Quincy suction valve unloader assembly consists
of unloading assemblies on the suction valves, having
a plunger to contact the suction valve reed and an
unloader pilot valve ( 0832 or 0998 series) to
automatically regulate the passing of air tank pres-
sure to the unloading arrangement.
Continuous Run Operation
Suction valve unloader assemblies are recommended
for use on Quincy compressors where the compressor
is to run continuously and a constant pressure is to be
maintained. The purpose is to automatically unseat
the suction valve of the compressor when the air
supply is greater than the demand.
Unloading occurs when air tank pressure is suffi-
cient to overcome pilot valve spring pressure. The
check ball is then unseated, allowing air tank pres-
sure to pass to the unloader assemblies. The compres-
sor will run unloaded until the air tank pressure
drops to a predetermined level. At this time, the
action of the ball is reversed, shutting off air tank
pressure to the unloader assemblies and venting the
unloader to atmosphere. This allows the compressor
to load. The drive, either electric motor or engine,
runs continuously and must be started and stopped
manually. 0832 series pilot valves feature a toggle
lever which can be flipped to provide manual unload-
ing.
Dual Control Operation
Dual control operation is designed to provide a
choice between "start/stop" or "continuous run" op-
eration. The 0998 series pilot valve can be set for
"start/stop" operation by turning the knurled knob at
the end of the pilot valve (refer to illustration for
110998 series pilot valve) clockwise until it stops.
Under these circumstances, a pressure switch is
required to stop the motor. Failure to use a pressure
switch, with the pilot valve locked out, will result in
unsafe conditions.
A pressure switch must be incorporated whenever 0998
series pilot valve is employed as part of the control system.
The compressor will operate in the continuous run
mode if the knurled knob is turned counterclockwise until it
stops.
Decals

QT-7.5 Air Master Quincy Compressor
50121M201, May 2001 1 3501 Wismann Lane, Quincy IL 2305-311
Item Part
# Qty. Number Description
Head Kit KQT75HA
1 114419-001 Replacement Valve Assembly
1 110377E100 air filter element
Item Part
# Qty. Number Description
1 114209 Piston Ring Set
1 114210 Piston Ring Set
1 114418 Gasket Set
1 113946X1 valve plate assembly
1 110377E100 air filter element
1 110190-010 piston pin
1 110190-016 piston pin
1 111333 crankcase breather
1 113936-001 connecting rod assembly, LP
1 113936-003 connecting rod assembly, HP
Overhaul Kit KQT75G
Item Part
# Qty. Number Description
1 110377E100 air filter element, (fits 110377F100
110377S100 and 110377S101 air
filters)
1 114418 gasket set
1 114419-001 replacement valve assembly
Recommended Spare Parts
Item Part
# Qty. Number Description
Gas et Set 114418
1 113618-002 gasket, valve plate to head
1 114005 gasket, cylinder to valve plate
1 113943 gasket, crankcase to cylinder
1 113755 gasket, bearing carrier
1 111106 oil seal

QT-7.5 Air Master Quincy Compressor
50121M201, May 2001 17 3501 Wismann Lane, Quincy IL 2305-311
TYPICAL UNIT REPAIR PARTS LIST
(QT-7.5 simplex - horizont l t nk - electric motor)
Part Part Part
Qty Number Number Number Description
80 gal. 120 gal.
1 113268-200 113271-200 tank (200 psi maxim m operating press re)
1 2713 111136-050 tank drain valve
1 111136-075 111136-100 service valve
1 110514-300 110514-300 press re ga ge
1 110512-005 110512-005 press re switch
1 110513-200 110513-200 press re relief valve (in tank; 200 psi)
1 111089-215 111089-215 press re relief valve (in discharge line; 215 psi)
1 111491 111491 check valve
4 ft. 110515-075 110515-075 discharge t be
2 110948-075 110948-075 t be fitting, n t with sleeve
1110945K017 110945K017 belt g ard assembly
7.5 H.P.
1110258B061 drive belt
1110828 motor p lley
1 8930 motor b shing
115/230v, 1Ø 200v, 3Ø 230/460v, 3Ø
1127466J018 8393 124517-009 7.5 h.p. motor (O.D.P.)
* 230 volt only
Part Part Part
Qty Number Number Number Description
120 gal. 200 gal.
1 113467-200 113469-200 tank (200 psi maxim m operating press re)
2 113281 113281 top plate
1 111136-050 111136-050 tank drain valve
1 111136-100 111136-100 service valve
1 110514-300 110514-300 press re ga ge
2 110512-005 110512-005 press re switch, 135-175 p.s.i.
1 110513-200 110513-200 press re relief valve (in tank; 200 psi)
2 111089-215 111089-215 press re relief valve (in discharge line; 215 psi)
2 111491 111491 check valve
8 ft. 110515-075 110515-075 discharge t be
2 110948-075 110948-075 t be fitting, n t with sleeve
2110945K017 110945K017 belt g ard assembly
7.5 H.P.
2110258B061 drive belt
2110828 motor p lley
2 8930 motor b shing
115/230v, 1Ø 200v, 3Ø 230/460v, 3Ø
1127466J018 8393 124517-009 7.5 h.p. motor (O.D.P.)
* 230 volt only
(QT-7.5 duplex - horizont l t nk - electric motor)
Part numbers shown in italics appl to tank mounted units and base mounted units.
The parts listed here are for standard QT-7.5 (up to 175 p.s.i.) units and ma or ma not be applicable to custom built units. Check with
our local authorized AirMaster Distributor for parts that can be used for custom built units. Make sure the components ou order are rated
within the safe operating limits of our s stem. If ou are doubtful about which components to order, contact our local AirMaster
Distributor.
*
*
Part numbers shown in italics appl to tank mounted units and base mounted units.

QT-7.5 Air Master Quincy Compressor
50121M201, May 2001 18 3501 Wismann Lane, Quincy IL 2305-311
TYPICAL UNIT REPAIR PARTS LIST
(QT-7.5 vertic l t nk - electric motor)
(QT-7.5 g soline engine driven)
Part Part Part
Qty Number Number Number Description
base unit tank unit
1 113727-200 tank (200 p.s.i. maxim m operating press re)
1 113764 top plate
1 111136-025 tank drain valve
1 111136-050 ball valve
1 110514-300 press re ga ge
1 110513-200 press re relief valve (in tank; 200 p.s.i.)
2 110357B070 110357B070 drive belt
1 5629 5629 engine p lley
1 8927 8927 engine p lley b shing
1 113702K009 113702K009 belt g ard assembly
1 113143-002 113143-002 throttle control (b llwhip cable)
1 113701 113701 Kohler engine gro p, 13 h.p. (incl des exha st system & throttle control)
3 ft. 110515-075 discharge t be (3/4" copper t be to be formed by c stomer)
2 110948-075 t be fitting, n t with sleeve
1 111089-215 111089-215 relief valve (in discharge line; 215 psi)
1 110921-177 check valve
1 113708-1750 113708-175 pilot (165-175 psi)
1 114551-175 discharge nloader valve
80 gal. 120 gal.
1 113270-200 114119-200 tank (200 p.s.i. max. working press re)
1 110425-025 110425-050 tank drain valve
1 111136-075 111136-075 ball valve
1 110514-300 110514-300 press re ga ge
1 110512-005 110512-005 press re switch (135-175 p.s.i.)
1 110513-200 110513-200 press re relief valve (in tank; 200 p.s.i.)
4 ft. 110515-075 110515-075 discharge t be (3/4" copper t be to be formed by c stomer)
2 110948-075 110948-075 t be fitting, n t with sleeve
1 111491 111491 check valve
1 111089-215 111089-215 relief valve (in discharge line; 215 psi)
1 110945K017 110945K017 belt g ard assembly
7.5 H.P.
1110258B061 drive belt
1110828 motor p lley
1 8930 motor b shing
115/230v, 1Ø 200v, 3Ø 230/460v, 3Ø
1127466J018 8393 124517-009 7.5 h.p. motor (O.D.P.)
Part Part Part
Qty Number Number Number Description
*
!
!
! Pre-formed discharge t bes are available. Contact factory with model & tank size information.
! Pre-formed discharge t bes are available. Contact factory with model & tank size information.
* 230 volt only.
The parts listed here are for standard QT-7.5 (up to 175 p.s.i.) units and ma or ma not be applicable to custom built units. Check with
our local authorized AirMaster Distributor for parts that can be used for custom built units. Make sure the components ou order are rated
within the safe operating limits of our s stem. If ou are doubtful about which components to order, contact our local AirMaster
Distributor.

QT-7.5 Air Master Quincy Compressor
50121M201, May 2001 19 3501 Wismann Lane, Quincy IL 2305-311
TYPICAL UNIT REPAIR PARTS LIST
(QT-7.5 diesel engine driven)
Part Part Part
Qty Number Number Number Description
base unit tank unit
1 113727-200 tank (200 p.s.i.)
1 113764 top plate
1 111136-025 tank drain valve
1 111136-050 ball valve
1 110514-300 press re ga ge
1 110513-200 press re relief valve (200 p.s.i.)
2 110258B070 110258B070 drive belt
1 114212 114212 engine p lley
1 8927 8927 engine p lley b shing
1 113702K010 113702K010 belt g ard assembly
1 113143-001 113143-001 throttle control
1 114080-001 114080 Yanmar engine gro p, 10 h.p. (incl des throttle control)
2.5 ft. 110515-075 discharge t be (3/4" copper t be to be formed by c stomer)
2 110948-075 t be fitting, n t with sleeve
1 111089-215 press re relief valve (in discharge line; 215 p.s.i.)
1 110921-177 check valve (discharge line)
1 113708-175 113708-175 pilot (165-175 p.s.i.)
! Pre-formed discharge t bes are available. Contact factory with model & tank size information.
!
The parts listed here are for standard QT-7.5 (up to 175 p.s.i.) units and ma or ma not be applicable to custom built units. Check with
our local authorized AirMaster Distributor for parts that can be used for custom built units. Make sure the components ou order are rated
within the safe operating limits of our s stem. If ou are doubtful about which components to order, contact our local AirMaster
Distributor.