Bobcat 425, 428 Compact Excavator Service Manual (6986952enUS 2016)

Bobcat 425, 428 Compact Excavator Service Manual 6986952enUS (02-16)

This professional-grade service manual provides extensive maintenance procedures, repair techniques, and troubleshooting diagnostics for Bobcat 425 and 428 Compact Excavators. Featuring detailed schematics, serial-specific procedures, and complete hydraulic, electrical, and engine systems coverage, it’s ideal for field technicians and workshop professionals.

Model Covers:

Bobcat 425 Compact Excavator S/N AACJ11001 & Above
Bobcat 425 Compact Excavator S/N A9K311001 & Above
Bobcat 428 Compact Excavator S/N A9K411001 & Above

File Format: PDF

Size: 20.41 MB

No. of pages: 712

Language: English

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

📑 Table of Contents Overview:

Maintenance & Safety Operations

• Service schedules, safety warnings, fuel specs, biodiesel compatibility
• Air cleaner, engine oil, coolant, lubrication, and storage procedures
• Motion alarm system, alternator belt, and tailgate/right side cover access

Hydraulic System Repair & Testing

• Hydraulic schematics, symbol glossary, and circuit troubleshooting
• Disassembly and reassembly of all cylinders, valves, and pump components
• Control levers, joystick valves, travel motors, and manifold servicing

Undercarriage & Track Components

• Blade and track frame assembly for rubber and steel variants
• Roller, idler, coil spring, tensioning and sprocket installation details
• Track damage recognition and swing circle gear replacement

Cab, Upperstructure & Controls

• Seat, cab, canopy, windows, joystick, console and control pedal servicing
• Blade control, boom swing pedal, X-Change™ coupler, clamp, and covers
• Upperstructure slew lock, horn, fuel tank, counterweights and bushing work

Electrical & Diagnostic Features

• Wiring schematics, fuse/relay ID, magnetic sensors, and job clock setup
• Starter, alternator, lights, diagnostic codes, and battery servicing
• Lockout sensor testing, fuel sender troubleshooting and console diagnostics

Engine Overhaul & Fuel System

• Compression checks, timing, valve service, crankshaft and piston repair
• Injector removal, fuel shutoff solenoid, and camshaft inspection
• Cooling system, thermostat, muffler, oil pump, and lubrication routines

HVAC System & Air Conditioning

• Blower fan, heater valve, coil, and duct maintenance
• System troubleshooting for airflow and electrical components
• Unit removal, filter changes, and full servicing instructions

Specifications & Tools

• Technical specs for both models with long and standard arm setups
• Torque charts, hydraulic fluid specifications, conversion tables
• List of required tools for hydraulic, HVAC, and engine diagnostics

This all-inclusive Bobcat 425, 428 Compact Excavator Service Manual provides unmatched detail and reliability for maintaining peak equipment performance.

Note: For legacy units with serial numbers prior to AACJ11001, A9K311001 (425), and A9K411001 (428), refer to the earlier edition – [Bobcat 425/428 Service Manual 09-09 (6904866EN)] – which includes system layouts and mechanical specifications tailored to previous-generation components, including earlier undercarriage configurations and non-Hydraulic X-Change setups.