Caterpillar 311D 312D 314D Hydraulic Excavators Global Service Learning Manual – PDF DOWNLOAD

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Caterpillar 311D 312D 314D Hydraulic Excavators Global Service Learning Manual – PDF DOWNLOAD

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DESCRIPTION:

Caterpillar 311D 312D 314D Hydraulic Excavators Global Service Learning Manual – PDF DOWNLOAD

INTRODUCTION :

The 311D/312D/314D Hydraulic Excavators incorporate design innovations and performance improvements from the 311C/312C/314C Hydraulic Excavator Series and are a direct replacement for them. The machines feature a new cab for greater operator comfort. The cab provides the operator with excellent visibility of processing equipment, trucks, and railcars.

• The cab, consoles, and joysticks have been improved to provide a better access and understanding of all functions. The 311D/312D/314D Hydraulic Excavators feature a hydrostatic drive system, Side-By-Side (SBS) pumps, Negative Flow Controlled (NFC) hydraulic system, and pilot operated control valves similar to the 311C/312C/314C.
• The machines have a monitoring system similar to that of the 320D. The 311D/312D/314D HEX is equipped with the C4.2 ACERT™ engine which meets U.S Environmental Protection Agency (EPA) Tier 3 and European Union Stage IIIa emissions control standards.

This chart displays the similarities and differences between the 311D/312D/314D and the 311C/312C/314C Hydraulic Excavators. New and improved features include:
Operator’s Station:

• The operator’s station has been improved over the previous models. The 312D cab is similar to the 320D and the 311D/314D cabs are similar to the 321D. The layout of the interior has been redesigned to maximize operator comfort and reduce operator fatigue. Frequently used switches have been relocated for easier access.
• The consoles and armrests have been redesigned for better comfort and adjustability. More seat options are available to choose from: the standard mechanical suspension seat, or the optional air suspension seat with heater.

Engine: The 311D/312D/314D machines are equipped with a C4.2 Tier III ACERT™ engine.
Monitor: The monitor is a full color Liquid Crystal Display that provides vital operating and performance information, alerts in text, which are all in a simple, easy to navigate format. The monitor is the same as the 320D series machines.
Tool Control: The tool control system for the 311D/312D/314D is similar in function to the tool control systems for the 320D series machines.

The SmartBoom™ attachment enhances operation of the boom function and significantly reduces the machine cycle times.

TABLE OF CONTENTS:

Caterpillar 311D 312D 314D Hydraulic Excavators Global Service Learning Manual – PDF DOWNLOAD

INTRODUCTION 5
MACHINE WALK AROUND 10
OPERATOR’S STATION 20
ELECTRONIC CONTROL SYSTEM 37
Engine Speed Control 39
Automatic Engine Control (AEC) 40
One Touch Low Idle 42
Engine Speed Protection 44
Travel Speed Control 46
Swing Brake Operation 48
Back-up System 50
C4 2 ACERT™ ENGINE 53
Fuel System 59
Air Inlet System
PILOT SYSTEM 83
Pilot Manifold 86
Hydraulic Activation Lever 90
Pilot Controls and Valves 92
MAIN HYDRAULIC PUMPS AND CONTROLS 101
MAIN CONTROL VALVE GROUP AND RETURN SYSTEM 117
Main Control Valve Group 118
Return Hydraulic System 139
BOOM, STICK, AND BUCKET CIRCUITS 145
Boom Circuit 148
Boom Lowering Control Valves 164
Stick Circuit 167
Slow STICK IN – No Regeneration 170
Fast STICK IN – Regeneration 172
Bucket Circuit 178
Cylinders 180
SWING SYSTEM 183
Swing System Components 184
Swing System Operation 188
Swing Motor Operation 192
SERV1851 – 3 – Text Reference
TRAVEL SYSTEM 207
Travel System Components 208
Travel System Operation 213
Travel Parking Brake 219
Straight Travel 226
Swivel 230
CONCLUSION 232
VISUAL LIST 233
HYDRAULIC SCHEMATIC COLOR CODE 236

CATERPILLAR 311D 312D 314D HYDRAULIC EXCAVATORS GLOBAL SERVICE LEARNING MANUAL – PDF DOWNLOAD:

PLEASE NOTE:

• This is the SAME manual used by the dealers to troubleshoot any faults in your vehicle. This can be yours in 2 minutes after the payment is made.
• Contact us at [email protected] should you have any queries before your purchase or that you need any other service / repair / parts operators manual.

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