Lincoln SKF 84803 Instruction Manual

User and maintenance instructions
Models , , , , 
-, /-, -, - and -in air motors
Date of issue September 2020
Form number 404192
Version 4

Contents
EC Declaration of Incorporation . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Explanation of signal words for safety . . . . . . . . . . . . . . . . . . . . . 
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Service assemblies and kits. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Before connecting air motor to air line . . . . . . . . . . . . . . . . . . 7
Operating precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Attach air motor to pump tube . . . . . . . . . . . . . . . . . . . . . . . . . 7
Service and disassembly procedure . . . . . . . . . . . . . . . . . . . . . 8
Power valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Pilot bar subassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Cylinder tube and muffler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Service and assembly procedure . . . . . . . . . . . . . . . . . . . . . . . 11
Cylinder tube and muffler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Pilot bar subassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Power valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Parts list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Series III air motor kits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Series III air motor assemblies . . . . . . . . . . . . . . . . . . . . . . . . . 19
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24


EC Declaration of Incorporation
Manufacturer: SKF
 N. Hanley Road
St. Louis, MO U.S.A.
URL: SKF.com
Phone: -
EU contact: SKF
Heinrich-Hertz-Straße -
 Walldorf
Phone:  () -
Product: Air motors
Description: reciprocating air motor to drive pumps
Model(s): , , , , 
Year of construction: see type identification plate
complies with all basic requirements of the following directives
at the time when first being launched in the market.
Report no.’s: NA
The equipment indicated on this declaration complies with the
following directives:
Machinery Directive //EC
And was evaluated using the following harmonized EN standards:
EN ISO :, EN ISO :,EN ISO :+A!:
SKF declares under its sole responsibility that the
Air motor model(s): , , ,  and 
are in conformity with the Machinery Directive //EC.
In the case of modifications or alterations of the above
mentioned machine not authorized by the manufacturer,
validity of this EC declaration of conformity will cease.
The person empowered to assemble the technical
documentation on behalf of the manufacturer is the head
of standardization; see EC-representative‘s address.
Brad Edler
Manager Product Development
Product Engineering LPD North America
Innovation and Product Management


Safety
It is responsibility of owner and/or operator
to properly use and maintain equipment.
Carefully read and understand instructions
and warnings in manual before
operating equipment.
Equipment complies with OSHA Stand-
ards where applicable.
Manual contains important warnings and
instructions. Read and retain for reference.
Explanation of signal
words for safety
NOTE
Emphasizes useful hints and
recommendations as well as
information to prevent property damage
and ensure efficient trouble-free
operation.
CAUTION
Indicates a dangerous situation that can
lead to light personal injury if
precautionary measures are ignored.
WARNING
Indicates a dangerous situation that
could lead to death or serious injury if
precautionary measures are ignored.
DANGER
Indicates a dangerous situation that will
lead to death or serious injury if
precautionary measures are ignored.
WARNING
Do not exceed stated maximum working
pressure of air motor or of lowest rated
component in system.
Do not alter or modify any part of
this equipment.
Do not operate this equipment with
combustible gas.*
Do not attempt to repair or disassemble
equipment while system is pressurized.
Tighten all fluid connections securely
before using equipment.
Always read and follow fluid manufac-
turer’s recommendations regarding fluid
compatibility, and use of protective
clothing and equipment.
Check all equipment regularly and
repair or replace worn or damaged
parts immediately.
Failure to comply with warnings
including misuse, over pressurizing,
modifying parts, using incompatible
chemicals and fluids, or using worn
or damaged parts, may result in
equipment damage and/or serious
personal injury, fire, explosion, or
property damage.
*Indicates change.


23 5/8 in
(600 mm)
15 9/16 in
(395 mm)
4 in
(102 mm)
4 in
(102 mm)
Fig. 1
Dimensions
Table 1
Specifications
Model Cylinder
diameter
Effective piston
area
Operating
pressure range
Operating
temperature range
Minimum I.D.
of air supply
Air inlet
NPTF
Air consumed
per cycle at
 psi (7 bar)
in mm incm2psi bar ° F °C in mm in SCF L(N)
  254  503  to  2 to 7 – to + –34 to +93 3/419 3/4. 103
  203  323  to  2 to 7 – to + –34 to +93 3/419 3/4. 75
  152  181  to  2 to 7 – to + –34 to +93 1/213 3/4. 46
  /108  90  to  2 to 14 – to + –34 to +93 1/213 1/2. 32
  76 45  to  2 to 14 – to + –34 to +93 3/810 1/2. 20
) PTFE seals used with power valve spool (14) and relay valve (26).*
*Indicates change.
Table 2
Specifications (continued)
Model Maximum
recommended
speed, cycles/min
Stroke length Weight Seal material ) Dimension
A B C
in mm lb kg in mm in mm in mm
   152  28 Nitrile and PTFE  1/4337  5/8295  3/4578
  152  21 Nitrile and PTFE  1/4286  9/16 243  3/4578
  152  15 Nitrile and PTFE  1/4235  3/4197  3/4578
  152  12 Nitrile and PTFE  1/2191 152  5/8600
  152  11 Nitrile and PTFE  1/2191 152  5/8600
Air
inlet
Exhaust


Service assemblies
and kits
Fig. 2
Pilot bar subassembly (35)
To reduce down-time and take advantage of
modular design of air motor, the following
service assemblies are recommended for
repair of air motor. After removal, faulty
assembly can be repaired using
corresponding soft parts kit.
For assemblies and soft parts kits
(†Series III air motor kits, page 19).
Fig. 3
Relay valve (26)
Fig. 4
Air signal valve (32)
Fig. 5
Muffler (22)
Shown with gasket (20)
For assemblies and soft parts kits
(†Series III air motor kits, page 19).
Fig. 6
Power valve subassembly
For assemblies and soft parts kits
(†Series III air motor kits, page 19).
Fig. 7
Power valve spool and body (14)
NOTE
Replace all parts included in soft parts
kit when replacing soft parts.


48
44
1
47
WARNING
Do not alter or modify any part of
this equipment.
Check equipment for proper operation
before each use.
Do not operate equipment without
safety devices installed.
Failure to comply may result in
equipment malfunction and/or damage
and result in serious personal injury.
Before connecting air
motor to air line
Lincoln series III air motors are fully
pneumatic and require a minimum specified
size of air supply hose for proper operation.
Check specification for minimum ID of air
supply hose and select corresponding sizes
of air controls and accessories for non-
restrictive air flow. Lincoln filter and
regulator with gauge are available as
combination units.
It is recommended to use  micron
minimum pneumatic filter along with
pressure regulator with system. Special
lubricant is used in assembly of air motors.
It is not recommended to lubricate system
after it has been installed as new lubricant
will wash away factory lubricant, and could
result in air motor failing. Added lubrication
could also result in critical small pneumatic
paths being blocked resulting in malfunction.
• For 3/8in air line
–Model -
• For 1/2in air line
–Model -
• For 3/4in air line
–Model -
If quick disconnect coupling should be used,
install supplied coupler to ensure proper air
motor operation.
Operating
precautions
Use Lincoln replacement parts to assure
compatible pressure rating. Comply with
all warnings.
Do not operate air motor in excess of
recommended pressure range.
Disconnect air line and relieve (vent)
pressure when air motor sits idle for long
periods of time and before servicing.
Attach air motor to
pump tube
1 Tightly attach connecting rods (48) to air
motor lower casting (44). Use short
threaded end of connecting rods
(†Fig. 8).
2 Mount air motor on top of pump tube
outlet and tightly connect pump
tube coupling nut to air motor
piston rod (1).
3 Attach connecting rods (48) to pump tube
with four nuts (47) supplied with air
motor. Leave nuts loose.
4 Connect air supply and slowly cycle pump
several times using only enough air
pressure to operate pump without stalling.
5 Stop pump on up stroke and tighten four
nuts to securely fasten air motor to
pump tube.
WARNING
Do not pump flammable material
or operate this equipment with
combustible gas.
Failure to comply may result in death
or serious injury.
WARNING
Do not exceed maximum air or fluid
working pressure of lowest rated
system component.
Failure to comply may result in death
or serious injury.
Fig. 8
NOTE*
Do not operate with air contaminated
with materials not compatible with
nitrile seals.
Use only with  in (152 mm) stroke
pump tubes.
WARNING
Do not operate pump without
recommended protective equipment.
Failure to comply may result in death
or serious injury.
*Indicates change.


10
11
12
13
13
14
15
15
16
17
18
19
Service and
disassembly
procedure
Disconnect air line and relieve (vent)
pressure when air motor sits idle for
long periods of time and before servicing.
Modular design of air motor and accessibility
of vital operation parts make service
available without taking air motor out of line
or without complete disassembly.
Fig. 9
Power valve
1 Remove four screws (11 and 19),
two on each side (†Fig. 9).
2 Remove end caps (12 and 18).
3 Push out valve spool (14).
4 Remove spool bumpers (13)
(one from each end).
5 Remove o-ring (15), one from each end.
6 Remove four screws (16) and lift
valve body (17).
7 Remove gasket (10) to complete
valve disassembly.
WARNING
Do not check, service or repair any part
of motor with air supply connected or
before relieving pressure to motor.
Failure to comply may result in
serious personal injury and/or damage
to equipment.


26
27
27
27
28
28
29
29
29
29
30
31
31
32
32
33
34
34
35
36
37
39
Pilot bar subassembly
1 Remove four screws (31), two on
upper bracket (30) and two on
lower bracket (33).
2 Pull out pilot bar subassembly (35)
and remove o-rings (29, 34, 36 and 39).
3 Remove two screws (37) and lift off
relay valve (26).
4 Remove o-rings (27 and 29) from
upper bracket (30).
5 Remove four screws (28), two on
upper bracket (30) and two on
lower bracket (33).
6 Lift off upper bracket (30) and
lower bracket (33).
7 Remove o-rings (27 and 29) and
two air signal valves (32).
Fig. 10


1
2
4
7
8 9
20
21
22
23
24
24
25
38
41
41
42
43
43
44
49
47
48
46
50
45
3
3
Cylinder tube and muffler
1 Remove two screws (21) and pull off
muffler (22) (†Fig. 11).
2 Remove gasket (20).
3 Remove two screws (24) to release end
element (23) from muffler plate (25).
4 Remove muffler element (38).
5 Unscrew four nuts (9) with open end
wrench and remove tie bolts (8).
6 Remove four tie rods (4).
7 Unscrew air tube (42) from upper
casting (7) and lower casting (44).
8 Remove o-rings (41).*
9 Lift upward and remove upper casting (7).
10Remove o-ring (2).
11Remove upper piston seal (3).
12Remove piston and piston rod (1) from
rod bearing (46).
13 Remove lower piston seal (3).
14Remove cylinder seal (43) on top of
cylinder tube (50).
15Lift upward and remove
cylinder tube (50).
16Remove remaining cylinder seal (43) and
rod bearing (46).
17 Remove adapter (45) from bottom of
lower casting (44).
18Remove U-cup (49) from bottom of
lower casting (44).
19Remove four nuts (47) from
connecting rods (48) with
open end wrench.
20Remove four connecting rods (48) from
lower casting (44).
Fig. 11
*Indicates change.
