Bobcat 331/331E/334 Excavator (D Series) Service Manual (6901139)

Bobcat 331 / 331E / 334 Excavator Service Manual – (D Series Models) 6901139 (2-06)

This detailed factory service manual provides comprehensive guidance for servicing and maintaining Bobcat 331, 331E, and 334 Excavators (D Series). With full system diagnostics, advanced hydraulic and electrical schematics, and precise component disassembly instructions, this manual is engineered for technicians requiring accurate service procedures across all systems.

Model Covers:

Bobcat 331 / 331E / 334 Excavator – D Series
S/N 232511001 & Above
S/N 232611001 & Above
S/N 232711001 & Above
Ingersoll Rand

File Format: PDF

Size: 36.62 MB

No. of pages: 865

Language: English

Delivery Method: Instant Download – Access your file immediately after purchase.

📑 Table of Contents Overview:

Safety, Maintenance & Daily Service

• Detailed Maintenance Safety Instructions and fire prevention guidelines
• Updated Service Schedule Charts and lubrication points
• Support for Biodiesel Fuel and coolant system procedures

Hydraulic System & Cylinder Servicing

• Full coverage of Hydraulic and Hydrostatic Schematics
• In-depth troubleshooting for Cylinders, Relief Valves, Pumps
• Includes both early and late serial number system variations

Electrical Systems & Diagnostics

• Expanded Diagnostics Service Codes and troubleshooting charts
• Detailed repair guides for Alternator, Starter, and Battery Systems
• Component-level tests for Voltage, Diodes, and Grounding

Engine, Fuel & Cooling System

• Engine removal, compression testing, valve adjustment and rebuild instructions
• Precise fuel system diagnostics: injector, pump, solenoid
• Complete service procedures for radiator, water pump, and oil pump

Cab, Frame & Structural Components

• Procedures for servicing ROPS Canopy, Cab Windows, Console Panels
• Blade, Tracks, Idler, and Roller disassembly & rebuild included
• Comprehensive Upperstructure and Swing Section installation guide

What's New in This Edition:

• Expanded Hydraulic Control Valve breakdowns by serial number range
• Added Track Damage Identification and troubleshooting visuals
• Updated Air Conditioning System Servicing with flow diagrams
• New torque specs, conversions, and hydraulic connection standards

This complete Bobcat 331 / 331E / 334 D Series Service Manual equips service professionals with the tools to ensure safe, efficient, and accurate machine repair and diagnostics.