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Ingersoll-Rand 7/31E - User Manual

Ingersoll-Rand 7/31E
162 pages
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Operation & Maintenance Manual
7/26E, 7/31E, 7/41, 7/51
Utility Equipment
P.O. Box 868 - 501 Sanford Ave
Mocksville, N.C. 27028
Book: 22221949 (12-15-06) Rev. A
7/26E Serial No.: 107000 ->
7/31E Serial No.: 318000 ->
7/41 Serial No.: 421500 ->
7/51 Serial No.: 442000 ->
This manual contains important safety information.
Do not destroy this manual.
This manual must be available to the personnel who operate and maintain this machine.
Doosan purchased Bobcat Company from Ingersoll-Rand Company in
2007. Any reference to Ingersoll-Rand Company or use of trademarks,
service marks, logos, or other proprietary identifying marks belonging
to Ingersoll-Rand Company in this manual is historical or nominative
in nature, and is not meant to suggest a current affiliation between
Ingersoll-Rand C
ompany and Doosan
Company or the products of
e
ith
er.
Revised (10-12)

Table of Contents

Other manuals for Ingersoll-Rand 7/31E

Questions and Answers

  • A
    Angela RobinsonSep 8, 2025
    Why is my Ingersoll-Rand 7/31E engine overheating?
    • A
      Anthony AndersonSep 9, 2025
      If the Ingersoll-Rand Air Compressor engine overheats, it might be due to a cooling system defect, insufficient coolant volume, fan belt slippage, thermostat malfunction, radiator filler cap malfunction, a fouled cooling system interior, or a clogged radiator.
  • J
    Jenny BushAug 23, 2025
    Why is my Ingersoll-Rand 7/31E engine malfunctioning in high speed range?
    • C
      Christopher HebertAug 23, 2025
      If your Ingersoll-Rand Air Compressor engine malfunctions in the high speed range, several issues could be the cause. There might be an insufficient fuel supply, so you should check it. Air in the fuel system can also cause problems, so bleed the fuel system. A clogged fuel filter element can restrict fuel flow, so replace the fuel filter. Inspect and repair any piping failures that may be present. Ensure even fuel injection between cylinders by balancing fuel injection. Replace a deteriorated governor spring. Also, incorrect valve clearance adjustment or a deteriorated valve spring can affect performance, so adjust the valve clearance and replace the valve spring if needed.
  • B
    Bryan AriasAug 25, 2025
    How to troubleshoot Ingersoll-Rand Air Compressor when engine does not start?
    • J
      Jennifer HickmanAug 25, 2025
      If the Ingersoll-Rand Air Compressor engine doesn't start, begin by checking the battery. Then, inspect the cable connections. If those aren't the issue, test the starter and switch. Finally, examine the safety relay.
  • E
    Elizabeth RussellAug 27, 2025
    Why is the Ingersoll-Rand Air Compressor engine speed stuck at high idle?
    • O
      oneillmelanieAug 27, 2025
      If the Ingersoll-Rand Air Compressor engine speed is stuck at high idle, inspect the engine control for restrictions or seizure.
  • C
    Carl SmithAug 27, 2025
    What causes my Ingersoll-Rand Air Compressor engine burning oil?
    • K
      Kristin GarzaAug 27, 2025
      If the Ingersoll-Rand Air Compressor engine is burning oil, it could be caused by faulty piston rings or damaged cylinder bores, or a faulty valve stem seal.
  • R
    Ralph MartinezSep 22, 2025
    What causes excessive injection volume in my Ingersoll-Rand Air Compressor?
    • E
      Eric RodriguezSep 22, 2025
      If the Ingersoll-Rand Air Compressor has excessive injection volume, it could be due to a defective injection pump.
  • W
    Wendy LopezSep 16, 2025
    Why does my Ingersoll-Rand 7/31E Air Compressor have insufficient air intake volume?
    • A
      Amy RobinsonSep 16, 2025
      If the Ingersoll-Rand Air Compressor has insufficient air intake volume, it could be due to a clogged air cleaner or restricted air flow.
  • D
    Danny MooreSep 18, 2025
    Why is my Ingersoll-Rand 7/31E Air Compressor engine hunting in medium speed range?
    • C
      Christina BraySep 18, 2025
      If the Ingersoll-Rand Air Compressor engine is hunting in the medium speed range, it could be because the governor spring has deteriorated.
  • C
    Caleb ReynoldsSep 7, 2025
    Why is the Ingersoll-Rand 7/31E Air Compressor engine hunting in medium speed range?
    • M
      Mathew DanielsSep 7, 2025
      If the Ingersoll-Rand Air Compressor engine is hunting in the medium speed range, it's likely that the governor spring has deteriorated, so replace the governor spring.
  • Q
    qschultzSep 4, 2025
    Why is my Ingersoll-Rand 7/31E Air Compressor engine running unstable?
    • R
      Rebekah ForbesSep 4, 2025
      If the Ingersoll-Rand Air Compressor engine is running unstably, several things could be the cause. Unstable low idling can lead to this issue, so adjust the low idling. A crack in the injection pipe can also cause instability, so inspect the injection pipe. Test and replace the injection nozzle if it has failed. Examine the solenoid return for any issues. Finally, check the compression pressure, as uneven compression between cylinders can cause unstable running.

Summary

Foreword

Warranty

General Warranty Information

Details warranty coverage for various equipment types, components, and timeframes.

Extended Airend Warranties

Explains limited extended warranties for airends, including conditions and coverage.

Warranty Registration Procedures

Instructions for registering machines and engines to validate warranty coverage.

Decals

ISO Safety Symbol Meanings

Explains graphic symbols used for safety warnings and information according to ISO standards.

Hazard Warning Decal Interpretation

Describes various warning decals and their meanings to ensure operator safety.

Noise Emission

Noise Control System Prohibitions and Information

Outlines federal laws against tampering with noise control systems and provides relevant information.

Noise Emission Control Maintenance Log and Schedule

Provides a log for recording maintenance and a schedule for noise emission controls.

Safety

Safety Signal Definitions and General Precautions

Explains danger, warning, caution, and notice signals; provides general safety advice.

Compressed Air and Material Safety

Details safety precautions for handling compressed air and hazardous materials.

Battery, Generator, and Transport Safety

Covers safety measures for batteries, generator sets, and transporting the machine.

Emergency Stop and Safety Chain Procedures

Explains emergency stop controls and guidance for safety chains.

General Information

Compressor and Engine Specifications

Lists technical data for compressor performance and engine models (7/26E to 7/51).

Lubricating Oil, Running Gear, and Tyre Specifications

Details oil, running gear, and tyre specifications.

Sound Level Data

Provides sound level measurements for the machine.

Operating Instructions

Commissioning and Setup Procedures

Guides on initial setup, drawbar fitting, and ensuring machine levelness before operation.

Prior to Starting Checks

Lists essential checks to perform before starting the engine and machine.

Starting and Stopping the Machine

Step-by-step instructions for starting, stopping, and optional features.

Emergency Procedures and Monitoring

Covers emergency stops, restarting, and monitoring operation.

Maintenance

Maintenance Schedule Overview

Presents a comprehensive schedule for periodic inspections and maintenance tasks.

Routine Maintenance Tasks

Details common maintenance activities like checking fluid levels and component inspections.

Protective Shutdown System Checks

Explains how to test various safety shutdown switches and circuits.

Compressor Filter and Separator Maintenance

Procedures for replacing compressor oil filters and separator elements.

Brakes System Maintenance

Instructions for checking, adjusting, and maintaining the overrun braking system.

Lubrication and Fluid Specifications

Information on engine and compressor lubrication, including oil specs and fluid charts.

Torque Values

A table listing torque specifications for various machine components.

Electrical System

Machine Wiring Schematics

Electrical diagrams for different machine models.

AC Power Schematic Diagrams

Electrical schematics for 115V, 230V, and 400/230V power systems.

Lighting System Schematics

Diagrams illustrating the wiring for European CE and American SAE lighting systems.

Piping and Instrumentation System

Piping and Instrumentation Diagram

Illustrates the flow and components of the machine's piping and instrumentation system.

Fault Finding

Engine Fault Diagnosis and Remedies

Lists common engine issues, their causes, and recommended solutions.

Compressor and System Fault Diagnosis

Identifies compressor and system problems, their causes, and troubleshooting steps.

Electrical System Fault Finding

Troubleshooting guide for electrical faults, including circuit breaker trips and voltage issues.

Options

Lubricator Operation and Maintenance

Instructions for operating and maintaining the lubricator system.

Generator (WDG) Operation and Safety

Details on operating the generator, including safety precautions and mode selection.

Generator Electrical System and Faults

Information on maintaining the generator's electrical system and troubleshooting common issues.

Engine

Engine Model Information and Specifications

Provides an overview of engine models and general information.

Engine Identification and Genuine Parts

Explains engine serial number identification and the importance of genuine parts.

Engine Data and Specifications

Detailed technical data and specifications for specific engine models (3IRH2N, 3IRH8N, 4IRH8N, 4IRI8N).

Fuel, Lubricants, and Coolant Management

Guidelines for selecting and using appropriate fuel, lubricants, and coolant for the engine.

Engine Operation Procedures

Instructions for operating the engine, including checks before and after starting.

Engine Maintenance Schedule and Explanations

Outlines the recommended maintenance schedule and explains each service item.

Periodical Inspection and Maintenance Tasks

Details specific inspection and maintenance tasks based on operating hours.

Engine Troubleshooting Guide

A comprehensive guide to diagnosing and resolving engine problems.

Ingersoll-Rand 7/31E Specifications

General IconGeneral
Model7/31E
Operating Pressure100 psi
Air Delivery3.1 m³/min
EngineDiesel
Engine Power18.5 kW

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