Lincoln SKF 84803 User And Maintenance Instructions
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Lincoln SKF 84803 User And Maintenance Instructions

Lincoln SKF 84803 User And Maintenance Instructions

3-, 4 1/4-, 6-, 8- and 10-in air motors
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User and maintenance instructions
3-, 4
/
1
4
Models 84803, 84804, 84806, 84808, 86810
Date of issue
September 2020
Form number
404192
Version
4
-, 6-, 8- and 10-in air motors

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Summary of Contents for Lincoln SKF 84803

  • Page 1 User and maintenance instructions 3-, 4 -, 6-, 8- and 10-in air motors Models 84803, 84804, 84806, 84808, 86810 Date of issue September 2020 Form number 404192 Version...

  • Page 2: Table Of Contents

    Contents EC Declaration of Incorporation Safety Explanation of signal words for safety Dimensions Specifications Service assemblies and kits Before connecting air motor to air line Operating precautions Attach air motor to pump tube Service and disassembly procedure Power valve Pilot bar subassembly Cylinder tube and muffler Service and assembly procedure Cylinder tube and muffler...

  • Page 3: Ec Declaration Of Incorporation

    EC Declaration of Incorporation Manufacturer: SKF 5148 N Hanley Road St Louis, MO U S A URL: SKF com Phone: 314-6794200 EU contact: SKF Heinrich-Hertz-Straße 2-8 69190 Walldorf Phone: 49 (0) 6227-30 Product: Air motors Description: reciprocating air motor to drive pumps Model(s): 84803, 84804, 84806, 84808, 86810 Year of construction: see type identification plate complies with all basic requirements of the following directives...

  • Page 4: Safety

    Safety Explanation of signal words for 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 NOTE operating equipment Emphasizes useful hints and Equipment complies with OSHA Stand- recommendations as well as ards where applicable information to prevent property damage...

  • Page 5: Dimensions

    Fig. 1 Dimensions 4 in (102 mm) 23 5 /8 in inlet (600 mm) 15 9 /16 in (395 mm) Exhaust 4 in (102 mm) Table 1 Specifications Model Cylinder Effective piston Operating Operating Minimum I D Air inlet Air consumed diameter area pressure range...

  • Page 6: Service Assemblies And Kits

    Service assemblies Fig. 4 Fig. 6 and kits Air signal valve (32) Power valve subassembly 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 Fig.

  • Page 7: Before Connecting Air Motor To Air Line

    Do not operate air motor in excess of recommended pressure range Lincoln series III air motors are fully Disconnect air line and relieve (vent) pneumatic and require a minimum specified pressure when air motor sits idle for long...

  • Page 8: Service And Disassembly Procedure

    Service and Power valve WARNING  disassembly Do not check, service or repair any part 1 Remove four screws (11 and 19), of motor with air supply connected or procedure two on each side († Fig. 9) before relieving pressure to motor 2 Remove end caps (12 and 18) Failure to comply may result in Disconnect air line and relieve (vent)

  • Page 9: Pilot Bar Subassembly

    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)

  • Page 10: Cylinder Tube And Muffler

    Cylinder tube and muffler Fig. 11 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)

  • Page 11: Service And Assembly Procedure

    Service and assembly Fig. 12 procedure Cylinder tube and muffler 1 Insert four connecting rods (48) into lower casting (44) († Fig. 12) 2 Tighten four nuts (47) on connecting rods (48) with open end wrench 3 Place U-cup (49) on bottom of lower casting (44) 4 Insert adapter (45) 5 Position cylinder seal (43) and rod...

  • Page 12: Pilot Bar Subassembly

    Pilot bar subassembly 6 Position o-rings (29, 34, 36 and 39) with appropriate slots and slide two 1 Insert o-rings (27 and 29) and screws (31) through lower bracket (33) two air signal valves (32) to top of and two screws (31) through pilot bar subassembly (35) (†...

  • Page 13: Power Valve

    Power valve 1 Place gasket (10) on top of upper casting (7) († Fig. 14) 2 Align valve body (17) with gasket (10) and secure to upper casting (7) with four screws (16) 3 Insert valve spool (14) to valve body (17) 4 Place o-rings (15) into slot on each end of valve body (17) 5 Insert spool bumbers (13), one on...
  • Page 14 Fig. IPB 1 1) 2) 1) 2) Table 3 Model Item number Torque to lbf-ft 84803 84804 84806 84808 86810 4 and 9 Used on model 86810 only Torque (4, 8 and 9) as shown in Table 3 Torque 10 to 12 lbf-ft (14 to 16 Nm) Torque to 50 lbf-in (6 Nm) After 24 hours, torque to 50 lbf-in (6 Nm) Align two holes on cylinder tube (50) with two holes on pilot bar (35) before tightening tie rods (4) so proper seal with o-rings is achieved...
  • Page 15 Fig. IPB 2 Models 84803 and 84804 Assemble adapter to piston rod using thread locker on threads Torque 60 to 65 lbf-ft (81 to 88 Nm)
  • Page 16 Fig. IPB 3 Models 84806, 84808 and 86810...
  • Page 17 Fig. IPB 4 Fig. IPB 5 Piston assembly for model 86810 Torque 115 to 125 lbf-ft (156 to 170 Nm) Torque 10 to 12 lbf-ft (14 to 16 Nm)

  • Page 18: Parts List

    Parts list Model 86810 Model 84808 Model 84806 Model 84804 Model 84803 Item Description Quantity 10 in (254 mm) 8 in (203 mm) 6 in (152 mm) in (107 mm) 3 in (76 mm) Piston rod assembly 247449 241740 241741 241742 241743 O-ring piston (Nitrile)

  • Page 19: Series Iii Air Motor Kits

    Series III air motor kits* Used on model Description Kit number 84803 Cylinder tube soft parts kit 84794 84804 Cylinder tube soft parts kit 84793 84806 Cylinder tube soft parts kit 84792 84808 Cylinder tube soft parts kit 84791 84610 Cylinder tube soft parts kit 84789 All series III air motors...

  • Page 20: Troubleshooting

    Troubleshooting Problem Possible cause Solution Air motor is not working and air is Restricted or inadequate air supply Check air supply and adjust to minimum coming from exhaust recommended level Check air supply hose diameter and change it to minimum recommended size (see specifications) Check size of FRL and Quick disconnect coupling Replace if small size or restricted...
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  • Page 24: Warranty

    ® SKF, Lincoln and AirBrake are registered trademarks of the SKF Group © SKF Group 2020 The contents of this publication are the copyright of the publisher and may not be reproduced (even extracts) unless prior written permission is granted Every care has been taken to ensure the accuracy...

This manual is also suitable for:

Skf 84804Skf 84806Skf 84808Skf 86810

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