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Bobcat 642 Skid Steer Loader Operation Service Repair Workshop Manual
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🏷️ Basic Information Machine Identification Make: Bobcat Model: 642 Model Variant: Skid Steer Loader (642 / 642B family era) Machine Type: Rubber-tire skid steer loader, rigid-frame, hydrostatic drive Production Years...
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Tipo: Bobcat 642
Fabricante:
Sku: 179812
Tag:
642
Bobcat 642
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🏷️ Basic Information
Machine Identification
Make:
Bobcat
Model:
642
Model Variant:
Skid Steer Loader (642 / 642B family era)
Machine Type:
Rubber-tire skid steer loader, rigid-frame, hydrostatic drive
Production Years Covered:
Early 1980s through early 1990s 600-series production
Manual Type:
Operation, Service and Repair Workshop Manual
Document Identity
Document Format:
PDF (digital download)
Delivery Method:
Instant download after purchase
Binding:
Digital - no physical binder supplied
Language:
English
Printability:
Fully printable pages
👋 Introduction
Market Position
Target Audience:
Owners, operators, fleet mechanics and independent workshops servicing the Bobcat 642
Intended Use:
Routine operation, scheduled maintenance, troubleshooting and component-level repair
Skill Level:
Entry-level DIY owners through professional technicians
Why This Manual
Coverage Advantage:
Combines operation, maintenance and repair procedures in one document rather than a single-topic booklet
Source:
Content follows the original manufacturer workshop publication, including factory specifications and data
Access Advantage:
Instant download; no shipping delay and no waiting for a physical book
Searchability:
PDF text allows keyword search for a system, torque value or component
Key Features
General Introduction:
Machine orientation, component identification and layout
Specifications:
Working range, weight, lifting capacities, bucket selection, undercarriage and major component data
Instrument and Controls:
Cab devices, cluster, switches, levers and pedals
Fuels and Lubricants:
Recommended oils, fuel and coolant guidance
Maintenance and Lubrication:
Checklists, maintenance charts and service instructions
📋 Manual Details
Coverage Areas
Operation and Maintenance:
Machine operation, controls, daily checks, lubrication and scheduled service
Specifications Section:
Major components, working range, weights, lifting capacities, bucket selection, undercarriage
Control Systems:
Cab devices, instrument cluster, switches, levers and pedals, heater and air conditioning
Service and Repair:
Engine, drive and hydraulic system procedures, electrical system, tightening torques
Supporting Content:
Fuels and lubricants, maintenance charts, service instructions, transportation and storage
Document Properties
Manual Type:
Operation, Service and Repair Workshop Manual
File Format:
PDF
Delivery Method:
Instant digital download
Language:
English
Page Count:
N/A - exact page count is not stated for this listing
Large File Handling:
Larger manuals may be supplied as a compressed archive requiring an unzip utility
📖 Manual Coverage
Systems Covered
Engine:
Service and repair information for the diesel engine used in the 642
Fuel System:
Fuel delivery, filters and fuel-related service procedures
Cooling System:
Coolant specification, cooling maintenance and service checks
Hydraulic System:
Loader and drive hydraulics, pressures, hoses and component service
Hydrostatic Drive:
Travel drive operation, service procedures and adjustments
Electrical System:
Wiring, charging, starting and electrical service instructions
Instrumentation and Controls:
Cluster, switches, levers, pedals and cab controls
Cab and HVAC:
Cab devices, heater and air conditioning service information
Procedures Included
Pre-Start Checks:
Daily and pre-operation inspection routine
Starting and Stopping:
Engine start-up, shutdown and cold-start procedure
Machine Travel:
Traveling, steering and operating the working device
Attachment Operation:
Attachment lowering, storage and quick-change guidance
Efficient Working Method:
Loading, grading and work-site operating technique
Special Work Sites:
Operation guidance for unusual ground and site conditions
Transportation:
Loading, fixing, crane loading and unloading, dimensions and weight for transport
Troubleshooting:
Diagnosis of common operating faults and system complaints
Technical Depth
Tightening Torque:
Fastener torque tables for service and reassembly
Fluid Specifications:
Fuel, coolant and lubricant specification tables
Maintenance Schedule:
Maintenance check list and maintenance chart by interval
Component Specifications:
Specification data for major components and the undercarriage
Working Range Data:
Operating range and lifting capacity information
Parts and Diagrams
Parts Information:
Component identification to support correct part selection, with exploded and cutaway illustrations
Major Components:
Identification and specification of primary assemblies
Bucket Selection:
Bucket selection guide matched to machine capacity
📊 Manual Specifications
File & Compatibility
File Format:
PDF (searchable, bookmarked, zoomable)
Compatibility:
Windows, macOS, Linux, iOS, and Android — any device with a PDF reader
Requirements:
A PDF reader application (e.g. Adobe Acrobat Reader, free)
Searchability:
Fully text searchable for fast lookup of any topic
Print & Binding
Print Quality:
High-resolution digital pages, printable at full clarity
Binding Type:
N/A — digital download, no physical binding
Paper Type:
N/A — digital download, no physical paper
⚙️ Engine Specifications
Engine Options
Primary Engine:
Kubota four-cylinder water-cooled diesel, naturally aspirated
Engine Family:
Kubota V-series industrial diesel (V1702 / V1902 class) used in the 642 era
Displacement:
Approximately 1.7 to 1.9 liters depending on build
Cylinder Configuration:
Inline four-cylinder, liquid cooled
Fuel Type:
Diesel
Exact Output Rating:
N/A - confirm against the engine plate and the factory specification section of the manual
Performance and Fuel System
Rated Speed:
Approximately 2,800 rpm governed operating speed
Fuel System:
Mechanical distributor-type diesel injection pump with replaceable fuel filter
Air Cleaner:
Dry-type element with dust cup and service indicator
Cooling:
Pressurized liquid cooling with radiator, thermostat and fan
Lubrication:
Full-pressure lubrication with spin-on oil filter
Electrical Starting:
12-volt electric starter with charging alternator
🔧 Transmission
Drive System
Standard Transmission:
Hydrostatic drive - tandem piston pumps feeding two independent wheel motors
Optional Transmission:
N/A - no factory alternative transmission offered for this model
Final Drive:
Chain-reduction final drive to each axle, enclosed in the chaincase
Speed Control:
Twin steering levers provide infinitely variable forward, reverse and neutral
Gradeability:
Full hydrostatic braking through the drive motors on lever return to neutral
Features
Turning:
Counter-rotation enables zero-radius skid turns within the machine's own footprint
Braking:
Dynamic hydrostatic braking plus a separate parking brake
Loader Hydraulics:
Dedicated gear pump supplying the lift and tilt circuits
Drive Fluid:
Common hydraulic/chaincase reservoir on this generation - check the manual for the specific fluid
📐 Dimensions
Exterior
Wheelbase:
Approximately 940 mm (37 in) on the standard tire package
Overall Length:
Approximately 2,570 mm (101 in) with the standard bucket
Overall Width:
Approximately 1,300 mm (51 in) on standard tires
Overall Height:
Approximately 1,940 mm (76 in) to the top of the ROPS/FOPS cab
Ground Clearance:
Approximately 180 mm (7 in) at the chaincase
Weights and Capacity
Curb Weight:
Approximately 1,860 kg (4,100 lb)
Rated Operating Capacity:
Approximately 640 kg (1,400 lb), the figure reflected in the 642 model number
Tipping Load:
Roughly double the rated operating capacity - verify in the specification section
Ground Pressure:
Depends on tire and ballast configuration - see the specification tables
🛡️ Safety Features
Operator Protection
Crash Test Ratings:
N/A - skid steer loaders are not rated under automotive crash test programs
ROPS:
Roll-Over Protective Structure integrated into the cab enclosure
FOPS:
Falling Object Protective Structure over the operator station
Seat Belt:
Operator restraint bar and seat belt; the engine start circuit is interlocked with the restraint on later builds
Operating Safety
Loader Arm Support:
Bypass valve lock to hold the lift arms raised during service
Parking Brake:
Mechanical parking brake acting on the drive system
Neutral Start:
Starter inhibited unless the drive levers are in neutral
Safety Hints:
Manual sections covering safety before operating, during operation, during maintenance and parking
Stability:
Rated operating capacity limits loading to preserve machine stability
💡 Technology Features
Cab and Instrumentation
Instrument Cluster:
Analogue gauges for engine and hydraulic monitoring with warning lamps
Switches:
Key start, lights, work lights and auxiliary switching
Controls:
Twin steering levers plus foot pedals for lift, tilt and engine speed
Operator Station:
Open or enclosed cab with optional heater and air conditioning
Driver Assistance
Electronic Aids:
N/A - this era uses mechanical and hydrostatic control with no electronic driver aids
Self-Leveling:
Not fitted as standard - lift and tilt are controlled directly by the operator
Diagnostics:
Fault diagnosis is by gauge reading, symptom charts and hydraulic pressure testing
🔧 Maintenance
Service Intervals
Daily:
Check engine oil, coolant, hydraulic fluid level and air cleaner dust cup; grease loader pivots
First 50 Hours:
Initial engine oil and filter change plus drive and hydraulic checks
Every 50 Hours:
Lubricate loader arm, tilt cylinder and axle pivot points
Every 250 Hours:
Engine oil and filter, fuel filter and air cleaner element service
Every 500 Hours:
Hydraulic filter and drive component service
Annually:
Coolant condition, battery and electrical system inspection
Fluids
Engine Oil:
Diesel engine oil meeting the grade specified in the manual's lubricant table
Coolant:
Ethylene-glycol based coolant mixed to the manufacturer's concentration
Hydraulic and Chaincase Fluid:
Fluid grade listed in the specification section for this generation
Grease:
Lithium-based multi-purpose chassis grease
Known Issues and Wear Items
Drive Chains:
Chain stretch and adjustment in the chaincase are a routine wear point
Hydraulic Hoses:
Loader and drive hoses age, chafe and weep at fittings
Tires:
Uneven tire wear from skid steering; tire condition directly affects stability
Pins and Bushings:
Loader arm, tilt and axle pivots wear and require lubrication
Filters:
Fuel, oil, hydraulic and air filters are the main consumable items
📚 Vehicle History
Brand Heritage
Manufacturer:
Bobcat Company, originally Melroe Manufacturing
Origin of the Skid Steer:
Melroe pioneered the three-wheel then four-wheel skid steer loader that became the Bobcat line
Model Line:
The 642 sits within the 600-series of compact skid steer loaders
Model Evolution
Model Naming:
The 642 designation reflects roughly 642 kg (1,400 lb) rated operating capacity
Position in Range:
Mid-size machine between the smaller 500-series and larger 700/800-series loaders
Later Development:
Superseded by the 643 and the later 40-series models with updated hydraulics and cabs
Production Location:
N/A - built at Bobcat's Gwinner, North Dakota plant, but confirm the build location for a specific serial number
Documentation
Manual Purpose:
Factory operation, maintenance and repair reference for the 642 throughout its service life
Relevance:
Applicable to machines still in service and in the collector and small-farm market
🏆 Awards & Recognition
Model Recognition
Industry Recognition:
The Bobcat brand is credited with creating and defining the skid steer loader category
Specific Awards for the 642:
N/A - no dedicated industry awards are recorded for this individual model year
Era Context
Market Impact:
600-series loaders helped make the skid steer a standard machine on construction and farm sites
Design Legacy:
Established the vertical-lift, twin-lever layout still used across the Bobcat range
Collector Interest:
Early 600-series machines are sought after by enthusiasts and small operators