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Corken 91 - User Manual

Corken 91
100 pages
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Model 491-107
Installation, Operation
& Maintenance Manual
Plain Style Compressors for Liquid
Transfer-Vapor Recovery
Solutions beyond products...
ORIGINAL INSTRUCTIONS IE101K
Warning: (1) Periodic inspection and maintenance of Corken products is essential. (2) Inspection, maintenance and installation of
Corken products must be made only by experienced, trained and qualified personnel. (3) Maintenance, use and installation of Corken
products must comply with Corken instructions, applicable laws and safety standards. (4) Transfer of toxic, dangerous, flammable or
explosive substances using Corken products is at user’s risk and equipment should be operated only by qualified personnel according
to applicable laws and safety standards.

Table of Contents

Questions and Answers

  • H
    hebertrebeccaAug 17, 2025
    Why is my Corken 91 Air Compressor overheating?
    • J
      Jennifer JacobsonAug 17, 2025
      Your Corken Air Compressor may be overheating due to several reasons. The valves might be broken, stuck, or leaking, or the piston ring could be worn. High inlet or ambient temperature, a high compression ratio, or an unbalanced load could also cause overheating. Dirty cooling fins can also contribute to this problem, so clean them weekly.
  • D
    daniel26Aug 20, 2025
    What to do if Corken 91 has low capacity?
    • S
      srushAug 20, 2025
      If your Corken Air Compressor has low capacity, it could be due to several reasons. The valves might be broken, stuck, or leaking, so you should inspect and clean or repair them. A worn piston ring could also be the cause; inspect and replace it if necessary. Additionally, check for a clogged inlet strainer and clean or replace the screen if needed. Finally, inspect the piping for leaks and repair them.
  • J
    Jamie KrauseAug 22, 2025
    Why is my Corken Air Compressor vibrating excessively?
    • J
      Jennifer HernandezAug 23, 2025
      Excessive vibration in your Corken Air Compressor can stem from several issues. The valves may be broken, stuck, or leaking, or the flywheel or belt might be loose. Worn wrist pins, wrist-pin bushings, or connecting-rod bearings could also be the cause. An unbalanced load, an inadequate compressor base, or improper foundation/mounting can also lead to excessive vibration. To address these issues: * Inspect and clean or repair valves. * Tighten the flywheel or belt. * Replace worn wrist pins, bushings or connecting-rod bearings. * Strengthen, replace, or grout the compressor base. * Tighten the mounting or rebuild the foundation.
  • K
    kimberlyarcherAug 26, 2025
    What causes knocks, rattles, and noise in a Corken Air Compressor?
    • B
      Bobby TurnerAug 26, 2025
      Knocks, rattles, and unusual noise in your Corken Air Compressor can be caused by several factors. The valves might be broken, stuck, or leaking. A loose flywheel or belt, worn wrist pin or wrist-pin bushing, or a worn connecting-rod bearing could also be responsible. An unbalanced load could also be the cause. To resolve these issues, inspect and clean or repair the valves, tighten the flywheel or belt, and replace any worn wrist pins, bushings, or connecting-rod bearings.
  • D
    debrajordanAug 28, 2025
    What to do if my Corken 91 motor is overheating?
    • K
      Kathryn TaylorAug 28, 2025
      If your Corken Air Compressor motor is overheating or the starter is tripping, several factors could be responsible. Low voltage, incorrect motor wiring, or wires that are too small for the length of the run can cause these issues. Other potential causes include incorrect power characteristics, the wrong size of heaters in the starter, compressor overloading, a shorted-out motor, or a bad motor bearing. You can reduce speed in case of overloading. For other issues, consult with a power company or see driver installation.
  • D
    Dale MillerAug 31, 2025
    What causes abnormal piston-ring wear in a Corken 91?
    • W
      William PearsonAug 31, 2025
      Abnormal piston-ring wear in your Corken Air Compressor can be caused by broken, stuck, or leaking valves, or a worn piston ring. High inlet or ambient temperatures and a high compression ratio can also contribute to this issue. An unbalanced load may also be a factor. Inspect and clean or repair valves, and inspect and replace the piston ring if necessary. For temperature, compression ratio and load issues, consult factory.
  • B
    Barbara RamirezSep 2, 2025
    Why is there product leaking through the crankcase breather of my Corken Air Compressor?
    • A
      Alicia HoustonSep 3, 2025
      If product is leaking through the crankcase breather of your Corken Air Compressor, it is likely due to a worn piston-rod packing. Replace the worn piston-rod packing to resolve this issue.
  • N
    Nicholas BooneSep 5, 2025
    Why is there oil leakage around the base of my Corken 91?
    • M
      michelleeatonSep 5, 2025
      Oil leakage around the base of your Corken Air Compressor can be caused by leaking gas blowing oil from the crankcase or a bad oil seal. Try tightening the packing. If that doesn't solve the problem, replace the bad oil seal.
  • K
    Karen JohnsonSep 8, 2025
    What causes product leakage in a Corken Air Compressor?
    • M
      Max SmithSep 8, 2025
      Product leakage in your Corken Air Compressor can be due to leaks in the piping or a worn piston-rod packing. Inspect and repair any leaks in the piping, and replace the worn piston-rod packing.
  • W
    wallermichaelSep 12, 2025
    Why is there oil in the cylinder of my Corken 91?
    • H
      Hannah HartSep 12, 2025
      If there is oil in the cylinder of your Corken Air Compressor, it is likely due to a worn piston-rod packing. Replace the worn piston-rod packing to fix this issue.

Summary

Chapter 1-Introduction

1.1 Liquid Transfer By Vapor Differential Pressure

Explains the process of transferring liquefied gases using pressure differences.

1.2 Residual Vapor Recovery

Describes the process of recovering residual vapors from a tank.

1.3 Compressor Construction Features

Details the design and components of the compressor for specific applications.

Chapter 2-Installing Your Corken Compressor

2.1 Location

Guidelines for selecting an appropriate installation site for the compressor.

2.2 Foundation

Requirements for a stable and adequate concrete foundation for the compressor.

2.3 Piping

Proper design and installation of piping to minimize vibration and ensure flow.

2.4 Liquid Traps

Importance and types of liquid traps to protect the compressor from liquid entry.

2.5 Driver Installation; Flywheels

Procedures for installing the driver and flywheel for proper compressor operation.

2.6 Crankcase Lubrication

Recommendations for selecting and using appropriate oil for crankcase lubrication.

2.7 Relief Valves

Requirements for installing relief valves on the compressor discharge for safety.

2.8 Truck Mounted Compressors

Specific mounting and drive considerations for truck-mounted units.

2.9 Shutdown;Alarm Devices

Various shutdown and alarm devices for compressor protection and system safety.

Chapter 3-Starting Up Your Corken Compressor

3.1 Inspection After Extended Storage

Steps to inspect the compressor after periods of inactivity to ensure readiness.

3.2 Flywheel and V-belt Alignment

Proper alignment and tensioning of the flywheel and V-belts for efficient operation.

3.3 Crankcase Oil Pressure Adjustment

How to adjust and maintain proper oil pressure for compressor lubrication.

3.4 Startup Check List

A comprehensive checklist to verify all conditions before starting the compressor.

Chapter 5-Routine Service and Repair Procedures

5.1 Valves

Procedures for inspecting, cleaning, repairing, and replacing compressor valves.

5.2 Heads

Guidelines for head removal, inspection, and reassembly, including corrosion prevention.

5.3 Piston Rings and Piston Ring Expanders

Steps for replacing piston rings and expanders to maintain seal integrity.

5.4 Pistons

Detailed instructions for replacing pistons, including shimming and clearance checks.

5.5 Piston Rod Packing Adjustment

How to adjust or replace piston rod packing to prevent gas leakage.

5.6 Cylinder and Packing Replacement

Procedures for cylinder inspection, bore finishing, and packing replacement.

5.7 Bearing Replacement for Crankcase and Connecting Rod

Comprehensive guide for replacing various bearings within the compressor.

5.7.1 Wrist Pin Bushing Replacement

Specific steps for replacing the wrist pin bushing in the crosshead.

5.7.2 Replacing Connecting Rod Bearings

Instructions for replacing connecting rod bearings for proper crankshaft lubrication.

5.7.3 Replacing Crankcase Roller Bearings

Process for removing and installing crankcase roller bearings.

5.8 Oil Pump Inspection

How to inspect and maintain the compressor's oil pump for proper lubrication.

Chapter 6-Extended Storage Procedures

6.1 Repair Kits

Information on available repair kits for various compressor models and components.

6.2 Gasket Sets

Details on gasket sets provided for different compressor models.

Appendices

A. Model Number Identification Code and Available Options

Explains how to interpret model numbers and lists available options.

B. Specifications

Provides detailed technical specifications for compressor models, including dimensions and materials.

C. Compressor Selection

Guides for selecting the appropriate compressor based on service and capacity requirements.

D. Outline Dimensions

Drawings and dimensions of various compressor models and mounting configurations.

E. Parts Details

Exploded views and part numbers for compressor assemblies and components.

F. Troubleshooting

A guide to diagnosing and resolving common compressor problems and their causes.

Corken 91 Specifications

General IconGeneral
Model91
CategoryAir Compressor
Cooling MethodAir Cooled
Power SourceElectric
Number of StagesSingle
LubricationLubricated

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