DeVilbiss QS-5012 Reference manual

SB-19-087-N
REPLACES SB-19-087-M
SERVICE BULLETIN
AIR MOTOR DRIVES
(Cont'd on Page 3)
Important: Read and follow all instruc-
tions and SAFETY PRECAUTIONS before
using this equipment. Retain for future
reference.
DESCRIPTION
The air motors covered in this service bul-
letin are designed to drive paint agitators
when connected to a source of clean, dry,
air pressure.
QS-5012 air motor drive, 15-1 gear reduced
for pressure tank agitator. Includes air
adjusting valve with necessary hose and
fittings for hookup to tank regulator.
QMS-430 direct drive air motor and agita-
tor assembly for 2 gal. stainless pressure
tanks. Includes removable agitator and air
motor with air shut off valve and neces-
sary hose and fittings for hookup to tank
regulator. Agitator supplied is suitable
for use with halogenated hydrocarbon
based solvents.
QMG-416 direct drive air motor and agita-
tor assembly for 2 gal. galvanized pressure
tanks. Includes removable agitator and air
motor with air shut off valve and neces-
sary hose and fittings for hookup to tank
regulator. Agitator supplied is not suitable
for use with halogenated hydrocarbon
based solvents.
QS-5003 air motor drive, 15-1 gear re-
duced for paint drums having built-in
agitators. Includes air adjusting valve for
1/4" NPT(M) inlet.
High pressure can cause serious
injury. Pressure is maintained in
a pressure tank after the system
has been shutdown. Before
attempting removal of fill plug
or cover, relieve tank pressure.
Pressure Relief Procedure
1. Turn off the main air supply to the
tank.
2. Close air inlet valve located on tank
air manifold.
3. Bleed off air in the tank by turning
the air inlet valve handle counter-
clockwise. Wait until all the air has
escaped through the valve before
removing the pressure tank cover or
fill plug.
4. Leave the air relief valve open until
you have reinstalled the cover or fill
plug.
INSTALLATION
QS-5012 Installation onto Pressure Tank
with Agitator (Refer to Figure 3.)
1. Position agitator assembly over bear-
ing assembly in lid until support (60)
is fully seated on bearing assembly. It
may be necessary to rotate the drive
assembly in order to get the agitator
assembly to engage in the gear box.
Once engaged, again rotate the drive
assembly until the air motor inlet and
exhaust ports are aimed toward the
rear of the tank. This will allow proper
hookup of air hose and fittings to the
tank regulator.
2. Tighen hex head cap screw (61).
3. Remove main air supply inlet valve
from tank regulator and install service
tee (67) in open port.
4. Connect tank air supply inlet valve
to open end port of service tee (67).
Install nipple (64) in open port of
service tee.
5. If not already connected, install elbow
(63) in air motor inlet port and upper
nipple (64) in open elbow port. Connect
air adjusting valve (65) to upper nipple.
Connect hose assembly (66) between
lower nipple (64) and air adjusting
valve.
QMS-430 and QMG-416 Installation Into
Pressure Tank (Refer to Figure 1.
1. Follow pressure relief procedure before
removing or loosening any tank lid
components.
2. If not already separated, loosen propel-
ler setscrew (32) and remove propeller
from shaft.
3. Remove seal plug from paint tank
lid and clean sealing surface around
threaded port.
4. Make sure that the O-ring (26) is fully
seated in groove of adapter (24). Install
and tighten air motor adapter and shaft
assembly into threaded center hole in
tank lid.
5. Loosen setscrews (25) in adapter. Ro-
tate air motor assembly until inlet port
is aimed toward the rear of the tank to
allow hookup of air hose and fittings
to supply air inlet of tank regulator
or service tee. Air hose provided for
hookup is 10" long.
6. Retighten both setscrews (25).
7. Install propeller (31) on end of agita-
tor shaft (30). Secure propeller with
setscrew (32).
8. Remove main air supply inlet valve
from tank regulator and install service
tee (23). Install lower nipple (20) in
open port of service tee.
9. Connect tank air supply inlet valve to
end port of service tee (23). Install lower
nipple (20) in open port of service tee.
10. If not already connected, install elbow
(19) in air motor inlet port. Install upper
nipple (20) in open port of elbow. Con-
nect air adjusting valve (21) to upper
nipple. Then, connect hose assembly
(22) between air adjusting valve and
lower nipple.

Page 2SB-19-087-N SAFETY PRECAUTIONS
This manual contains important information that all users should know and understand before using the equipment.
This information relates to USER SAFETY and PREVENTING EQUIPMENT PROBLEMS. To help you recognize this information,
we use the following terms to draw your attention to certain equipment labels and portions of this Service Bulletin. Please pay
special attention to any label or information that is highlighted by one of these terms:
HAZARD CAUSE SAFEGUARDS
Fire Solvents and coatings can be 1. Adequate exhaust must be provided
highly flammable or combustible, to keep the air free of accumulations
especially when sprayed. of flammable vapors.
2. Smoking must never be allowed in
the spray area.
3. Fire extinguishing equipment must
be present in the spray area.
Explosion Hazard Making changes to pressure 1. Never drill, into, weld, or modify tank
Tank Rupture tank will weaken it. in any way. Carefully follow all instructions
for motor drive installation.
2. Do not adjust, remove, or tamper with
the safety valve. If replacement is necessary,
use the same type and rating of valve.
Explosion Hazard Halogenated hydrocarbon solvents - Aluminum is widely used in spray application
- Trichloroethane are not chemically equipment - such as material pumps, cups, regulators,
compatible with the aluminum that valves, etc. Check all equipment items before use
might be used in many system and make sure they can be used safely with these
components. The chemical reaction solvents. Read the label or data sheet for the material
caused by these solvents reacting with you intend to spray. If in doubt as to whether or not
aluminum can become violent and lead a coating or cleaning material is compatible, contact
to an equipment explosion. your material supplier. Any other type of solvent may
be issued with aluminum equipment.
Important information to alert you to a situation that might
cause serious injury if instructions are not followed.
The following hazards may occur during the normal use of
this equipment. Please read the following chart.
Note
Information that you should pay
special attention to.
Important information that tells how to prevent
damage to equipment, or how to avoid a situa-
tion that might cause minor injury.
CA PROP
65 PROP 65 WARNING
WARNING: This product contains chemicals known to the State of
California to cause cancer and birth defects or other reproductive harm.

SB-19-087-N Page 3
QS-5003 Installation onto Drum Mounted
Agitator (Refer to Figure 2)
1. Adapter (47) has two thread sizes:
1-1/2" NPS (M) on one end and 2" NPS
(M) on the other end. Choose the
proper thread size and place adapter
over agitator shaft of drum and screw
down securely.
2. Select proper driver shaft (46) and
attach it to drive coupling assembly
(48) with driver pin (45) and cotter pins
(44). Place this assembly on shaft of
drum agitator.
3. Slip air motor support (39) down over
drive coupling assembly (48) and
adapter (47).
4. Tighten air motor support (39) se-
curely with screw assembly (43).
5. Install gear box (38) on air motor sup-
port (39), being sure to engage shaft
of drive coupling assembly (48).
6. Tighten cap screw and hex nut (40
and 42).
7. Connect air supply line to air adjusting
valve (52).
OPERATION
Before operating air motor, lubricate as
covered in next section. Open valve to
main air line; then slowly open air adjust-
ing valve until agitator turns. To extend air
motor life, adjust air pressure setting to run
motor at about one revolution per second.
The agitator should be run continuously
while using the tank.
PREVENTIVE MAINTENANCE
Air Motor Lubrication
Failure to properly lubricate the air
motor will result in premature mo-
tor failure and will void warranty.
Lubricate air motor daily by adding 4
or 5 drops of SAE 10 weight oil into
air inlet fitting. For convenience, an
automatic oiler may be connected
to the air inlet.
Periodically - Remove air adjusting valve
and air strainer and flush motor with a
clean suitable solvent. Remove trapped
particles from screen in air inlet and clean
air strainer felt.
Air Motor Gear Box Lubrication
Every 2 Days - Remove oil fill plug and
check oil level. Proper oil level is indicated
on outside of gear box housing. If oil level
is low, add 140-weight SAE Gear Oil or a
high quality worm gear lubricant. Replace
pipe plug and tighten to 20 foot-pounds
(27 N-m) of torque.
Note
Gear box oil is most easily drained
just after motor operation, while oil
is still warm.
Note
Do not overfill. Overfilling may cause
oil to leak out of vent cap on top of
gear box.
After first 250 hours of operation, remove
gear box and drain gear oil. Refill gear
box with 140-Weight SAE Gear Oil or a
high quality worm gear lubricant. Replace
pipe plug and tighten to 20 foot-pounds
(27 N-m) of torque.
6 Months or 2500 Operating Hours - Re-
place gear oil according to instructions
above. Replace gear oil more often if
environment causes oil to become con-
taminated during use.
REPLACEMENT OF PARTS
Removal of Air Motor and Gear Box (Refer
to Figure 3 - typical assembly.)
1. Follow pressure relief procedure (Ref.
Pg. 1) before removing or loosening
any components.
2. Turn off valve to main air supply and
disconnect air adjusting valve (65) at
nipple (64).
3. Loosen upper cap screw (61) and
remove air motor and gear box as-
sembly from support (60).
Air Motor (Refer to Figure 4)
Holes must be drilled for new dowel pins
(72) after assembling front plate (77) on
new body (76) for alignment of parts.
Do not pry front plate (77) or end plate
(71) from air motor body (76) with a screw
driver; this will dent the surface of the
body and plates causing leaks. A puller
tool should be used to remove the plate
from the motor body while maintaining
the position of the shaft.
Always install new gaskets (73) when
reassembling air motor.
Assemble the end plates to the body using
an arbor press with a pusher acting on both
races of the bearing while rigidly support-
ing the opposite (drive) end of the shaft.
Gear Box (Refer fo Figure 5)
1. Remove oil fill plug (88) or cover plate
(84) and drain gear box lubricant.
2. Remove setscrews (91) and remove
gear box from air motor.
3. Disassembly gear box per exploded
view, Figure 5. Discard gaskets (87
and 92). Do not remove oil seal (90)
unless leakage or seal damage is
indicated.
4. If oil seal (90) was removed, inspect
seal seating bore in housing (89).
Remove any burrs or contaminants
from seal seating bore. Burrs or
contaminants could distort new oil
seal during installation.
5. Inspect gear and shaft assembly
(86) for wear grooves, burrs, or con-
tamination of seal seating area. If
seal seating area is damaged, shaft
must be repaired or replaced.
6. Inspect all other parts for wear spots,
chipping, or other damage. Replace
damaged or worn parts.
7. If oil seal (90) is being replaced,
inspect new seal for damage before
installing. Use arbor press to install
seal. Press fixture diameter must be
close fit with gear box bore diameter
to avoid damage to seal. Install with
inner casing and sealing lip toward
bottom of bore. Drive seal squarely
into bore to avoid warping. Check
that seal is fully seated all around at
bottom of bore.
8. Reassemble gear box per exploded
view. Install new gaskets (87 and 92).
Just prior to assembling gear box with
air motor, apply a small dab of thread
locking compound (81) to threads of
setscrews (91). Connect motor and
gear box and torque setscrews (91) to
60 inch-pounds (6.8 N-m), minimum.
Refill gear box per gear box lubrica-
tion instructions.
Approx. 1/8" Gap
(top of oil level to
bottom of fill line)

Page 4SB-19-087-N
Direct Drive Air Motor and Agitator Assemblies QMS-430 (Stainless Steel Shaft)
QMG-416 (Plain Steel Shaft)
Parts List for Figure 1
Ind.
Ref. Replacement Parts
No. Part No. Description Req'd.
1 QN-97 Carrying Handle 1
2 QMG-18 End Cap 1
3•† --- End Cap Gasket 1
4 † PT-58 Bearing 2
5 † Purchase Locally Machine Screw 12
1/4-28 x 1/2
6 † --- Front Plate 1
7•† PT-59-1-K10 End Plate Spacer Kit 2
(Kit of 10)
8 † QS-189-1-K10 Dowel Pin (Kit of 10) 4
9 † --- Body 1
10• --- Vane 4
11 † PT-57 Rotor Assy. for QMG-416 1
--- Rotor Assy. for QMS-430 1
(Not available separately,
order QMS-428 Air Motor
12 † --- End Plate 1
13 † PT-56 Seal 1
14 --- Strainer Cup 1
15 --- Screen 2
16•--- Felt 1
17 --- Strainer Body 1
18 † 350-401 Air Strainer 1
19* Purchase Locally Street Elbow 1/4" (M) 1
x 1/4" (F) NPT
20 H-2008 Nipple 1/4" NPS (M) 2
1/4" NPT (M)
21 HAV-500 Air Adjusting Valve, 1/4" 1
NPS (M) x 1/4" NPS (F)
AIR MOTOR DRIVE SERVICE CHECKS
CONDITION CAUSE CORRECTION
A. Air motor sluggish or inefficient. 1. Air motor needs lubrication 1. Lubricate (see "Air Motor Lubrica-
or cleaning. tion" section). Disassemble and clean
per parts replacement instructions.
2. Motor vanes need replacing 2. Disassemble, clean motor per parts
or contaminants present in replacement instructions. Replace
motor chamber, Fig. 4. worn vanes.
3. Low oil level in gear box, 3. Add oil per lubrication instructions.
Figure 5.
4. Gear and shaft assembly 4. Replace worn parts per parts
(86) and/or worm gear (93) replacement instructions.
worn, Figure 5.
5. Air motor bearing (68 or 79) 5. Replace bearings per parts
worn, Figure 4. replacement instructions.
B. Oil leakage from gear box. 1. Seal (90, Figure 5) worn. 1. Replace seal per parts replacement
instructions.
Ind.
Ref. Replacement Parts
No. Part No. Description Req'd.
22 HA-57011 Hose Assembly 1
23 Purchase Locally Service Tee 1/4" Galv. 1
24# --- Adapter 1
25# --- Set Screw 2
(1/4-20 x 1/4")
26 SSG-8184-K2 O-Ring (Kit of 2) 1
27 KK-5041 Shaft Seal Kit 1
27A --- Shaft Seal 1
27B --- Retainer 1
28# --- Shaft Coupling 1
29# Purchase Locally Set Screw 2
(1/4-20 x 1/4" s.s.)
30 QMS-73 Agitator Shaft for 1
QMS-430
QMG-56 Agitator Shaft for 1
QMG-416
31 QMS-448 Propeller Kit (includes 1
31A & 32
31A --- Agitator Propeller 1
32 Purchase Locally Set Screw 1
(1/4-20 x 3/8" s.s.)
32A KK-4991 Agitator Kit for 1
QMS-430 (Includes
Item Nos. 24, 25, 28, 29)
KK-4990 Agitator Kit for 1
QMG-416 (Includes
Item Nos. 24, 25, 28, 29)
• Parts included in KK-5001-1 Air Motor Repair Kit.
# When replacing either Ref. Nos. 24, 25 or 28 and 29, you
must order Ref. No. 32A, KK-4991 for QMS Models or
KK-4990 for QMG Models. The kit includes necessary parts.
Ref. No. (15) 2 ea. and Ref. No. (16) 4 ea. are included in
KK-5006 Strainer Screen and Felt Kit.
† Parts included in PT-410 Air Motor Assembly.

SB-19-087-N Page 5
Figure 1 Direct Drive Air Motor and Agitator Assemblies
QMS-430 (Stainless Steel Shaft)
QMG-416 (Plain Steel Shaft)
Shaft Seal
(27A)
Detail drawing
(faces down)
Note: Retainer (27B) required only if tank is
used for vacuum operation.
23
20
20
21
22
19
14
15 16 15
17
18
8
10
9
7
11
8
12
5
13
4
6
5
7
3
4
2
1
24
25
26
27A
28
29
30
31A
32
31
32A
32A
27B
27 (See Detail
and Note below)

Page 6SB-19-087-N
Parts List for Figure 2
Ind.
Ref. Replacement Parts
No. Part No. Description Req'd.
33 350-401 Air Strainer 1
34 --- Strainer Cap 1
35 + --- Screen 2
36•+ --- Felt 1
37 --- Strainer Body 1
38 --- Gear Box (Fig. 5)
39 QS-238 Air Motor Support 1
40 Purchase Locally Hex Head Cap Screw 1
3/8-16 x 2-1/2"
41 Purchase Locally Lock Washer 3/8" 1
42 Purchase Locally Hex Nut, 3/8-16 1
43 QS-456 Screw Assembly 1
44 Purchase Locally Cotter Pin 1/16" x 1/2" 2
45 QS-237 Driver Pin 1
46 QS-240 1/2" Driver Shaft 1
QS-242 7/16" Driver Shaft
47 QS-457 Adapter 1
48 QS-455 Drive Coupling Assy. 1
49 --- Air Motor, Fig. 4)
50 Purchase Locally Street Elbow, 1/4" (M) 1
x 1/4" (F) NPT Galv.
51 H-2008 Nipple, 1/4" NPS (M) 1
x 1/4" NPT (M)
52 HAV-500 Air Adjusting Valve 1
1/4" NPS (M) x 1/4" NPS (F)
• Included in KK-5001-1 Air Motor Repair Kit. See Page 8 for
additional parts included in kit.
+ Ref. No. (35) 2 ea. and Ref. No. (36) 4 ea. included in KK-5006
Strainer Screen & Felt Kit.
Figure 2 QS-5003 Gear Drive Air Motor

SB-19-087-N Page 7
Parts List for Figure 3
Ind.
Ref. Replacement Parts
No. Part No. Description Req'd.
53 350-401 Air Strainer 1
54 --- Strainer Cap 1
55 + --- Screen 2
56•+ --- Felt 1
57 --- Strainer Body 1
58 --- Gear Box (Fig. 5)
59 32243-133 Washer 1
60 QMS-35 Air Motor Support 1
61 Purchase Locally Hex Head Cap Screw 2
3/8-16 x 2"
62 --- Air Motor (Fig. 4) 1
63 Purchase Locally Street Elbow 1/4" (M) 1
1/4" NPT (F)
64 H-2008 Nipple 1/4" NPS (M) 1
1/4" NPT (M)
65 HAV-500 Air Adjusting Valve 1
1/4" NPS (F) x 1/4" NPS (M)
66 HA-57011 Hose Assembly 1
67 Purchase Locally Service Tee 1/4" Galv. 1
• Included in KK-5001-1 Air Motor Repair Kit. See Page 8 for
additional parts included in kit.
+ Ref. No. (55) 2 ea. and Ref. No. (56) 4 ea. included in KK-5006
Strainer Screen and Felt Kit.
Figure 3 QS-5012 Gear Drive Air Motor

Page 8SB-19-087-N
Parts List for Figure 5
Ind.
Ref. Replacement Parts
No. Part No. Description Req'd.
81 --- Thread Locking
Compound, not shown
82 • --- Fillister Head Machine 4
Screw 10-24 x 5/8"
83 QS-108 Pressure Relief 1
Fitting
84 QS-37-1 Cover Plate 1
85 • --- Washer 1
86 QS-416-1 Gear & Shaft Assy. 1
87 • --- Gasket 1
88 Purchase Locally Pipe Plug 1/4", Galvanized 1
89 QS-36-1 Housing 1
90 • --- Oil Seal 1
91 • --- Cup Point Setscrew 2
5/16-18 x 3/8"
92 • --- Gasket 1
93 QS-59 Worm Gear 1
94 • --- Spacer 1
95 • --- Key, No. 5, 5/8" x 1/8" 1
• Parts included in KK-5010 Gear Box Kit.
Figure 5 Gear Box Assembly
Parts List for Figure 4
Ind.
Ref. Replacement Parts
No. Part No. Description Req'd.
68 QS-336 Oil Seal 1
69 QS-197 Bearing 1
70 Purchase Locally Machine Screw, 1/4-28 X 1/2 12
71 QS-334 End Plate 1
72 QS-189-1-K10 Dowel Pin (Kit of 10) 4
73• PT-59-1-K10 End Plate Spacer Kit (Kit of 10) 2
74• --- Vane 4
75 QS-442 Rotor and Shaft Assy. 1
76 QS-335 Body 1
77 QS-333 Front Plate 1
78• --- End Cap Gasket
79 PT-58 Bearing 1
80 QS-190 End Cap 1
• Parts available in KK-5001-1 Air Motor Repair Kit.
Figure 4 QS-4016 Air Motor
(for QS-5003 and QS-5012)
80
79 78 77
73
73
72
76
74
75
70
72
71
68
69
70
WARRANTY
This product is covered by DeVilbiss' 1 Year Limited Warranty.
DeVilbiss Sales and Service: www.devilbiss.com
DeVilbiss
DeVilbiss has authorized distributors throughout the world. For technical
assistance or the distributor nearest you, see listing below.
U.S.A./Canada Customer Service Office:
195 Internationale Blvd., Glendale Heights, IL 60139
Toll-Free Telephone: [phone] (U.S.A. and Canada only)
Toll-Free Fax: [phone]
DeVilbiss Automotive Refinishing
DeVilbiss has authorized distributors throughout the world.
For equipment, parts and service, check the Yellow Pages
under “Automotive Body Shop Equipment and Supplies.”
For technical assistance, see listing below.
U.S.A./Canada Customer Service Office:
11360 S. Airfield Road, Swanton, OH 43558
Toll-Free Telephone: [phone] (U.S.A. and Canada only)
Toll-Free Fax: [phone]
9/12 ©2012 DeVilbiss All rights reserved. Printed in U.S.A.
When replacing Ref. No. 82, torque to 15
in-lbs. min. When replacing Ref. No. 91,
torque to 60 in-lbs. min. Apply SS-9868
sealant to threads as needed.