The Bobcat 322 is a small mini ex you'll see trenching for plumbers, doing yard drains, or tight-access footing work. The service manual is what a shop or field tech grabs when the 322 stops pulling, a cylinder starts leaking, or the engine or hydraulics need more than a quick filter change. It's for when you're past guessing and you need the right sequence, specs, and test points to get it fixed once and move on.
What this manual helps you do
- Diagnose no-move or weak-drive complaints in the hydrostatic system and track motors
- Check hydraulic pressures and flows when the boom, arm, or bucket is slow or dead
- Follow teardown and reassembly steps for cylinders, control valves, and swing components
- Trace and troubleshoot electrical and starting issues using wiring diagrams and test procedures
- Replace and set up engine, cooling, and fuel system parts after a failure or major service
Who this is for
This is for anyone working on a Bobcat 322 with serial number 224011001 through 224099999: small contractors, owner-operators, rental fleets, or independent mechanics like me who already wrench on Cat/Deere. If you just want operating tips, safety info, or fluid types, you want the operator's handbook instead, not this manual.
FAQ
Q: Is this a searchable PDF and are the wiring diagrams readable?
A: Yes, it's a PDF you can search by keyword, and the wiring diagrams are clear enough to zoom and follow circuits on a laptop or tablet.
Q: How do I know if it covers my exact 322?
A: Check your machine serial plate. If it falls between 224011001 and 224099999, this is the right manual.
Q: Is this the right document for basic maintenance only?
A: It will cover maintenance, but it's really aimed at full repair and diagnostics. For simple daily/250-hour checks, the operator's manual is easier.
Bottom line: If your 322's serial number is in that range and you're doing real repair work, this is the right Bobcat service manual to buy.
📘 Show Index
Table of Contents:
- MAINTENANCE SAFETY
- ALPHABETICAL INDEX
- CONTENTS
- SAFETY INSTRUCTIONS
- SERIAL NUMBER LOCATIONS
- Excavator Serial Number
- Engine Serial Number
- DELIVERY REPORT
- BOBCAT EXCAVATOR IDENTIFICATION
- SAFETY & MAINTENANCE
- LIFTING AND BLOCKING THE EXCAVATOR
- SWING LOCK
- LIFTING THE EXCAVATOR
- OPERATOR CAB ROPS/TOPS
- Emergency Exits
- Cab Door
- Front Window
- Right Side Windows
- TRANSPORTING THE EXCAVATOR
- TAILGATE
- Opening And Closing The Tailgate
- Adjusting The Bumper
- Adjusting The Tailgate Latch
- SERVICE SCHEDULE
- AIR CLEANER SERVICE
- Daily Check
- Replacing The Filters
- HEATER AIR FILTERS
- Recirculation Filter
- Fresh Air Filter
- ENGINE COOLING SYSTEM
- Cleaning The Cooling System
- Checking Coolant Level
- Replacing The Coolant
- FUEL SYSTEM
- Fuel Specifications
- Filling The Fuel Tank
- Removing Water From The Fuel Filter
- Replacing The Fuel Filter
- Draining The Fuel Tank
- Removing Air From The Fuel System
- ENGINE LUBRICATION SYSTEM
- Checking Engine Oil
- Oil Chart
- Replacing Oil And Filter
- HYDRAULIC SYSTEM
- Checking And Adding Hydraulic Oil
- Diagnostic Couplers
- Replacing The Hydraulic Filter
- Replacing Hydraulic Oil
- LUBRICATION OF THE HYDRAULIC EXCAVATOR
- TRAVEL MOTOR
- Checking Oil Level
- Draining The Travel Motor
- SPARK ARRESTOR MUFFLER
- ALTERNATOR BELT
- Adjusting The Alternator Belt
- SEAT BELT
- Inspection And Maintenance
- CONTROL CONSOLE LOCKOUTS
- Inspection And Maintenance
- HYDRAULIC SYSTEM
- HYDRAULIC/HYDROSTATIC SCHEMATICS
- HYDRAULIC SYSTEM INFORMATION
- Glossary Of Hydraulic/Hydrostatic Symbols For Excavators
- Troubleshooting The Hydraulic Circuit
- Troubleshooting The Cylinder Circuit
- Troubleshooting The Swing (Upperstructure Slew) Circuit
- Troubleshooting The Travel Circuit
- BOOM CYLINDER
- Testing
- Removal and Installation
- Parts Identification
- Disassembly
- Assembly
- ARM CYLINDER
- Testing
- Removal and Installation
- Parts Identification
- Disassembly
- Assembly
- BOOM SWING CYLINDER
- Testing
- Removal and Installation
- Parts Identification
- Disassembly
- Assembly
- BUCKET CYLINDER
- Testing
- Removal and Installation
- Parts Identification
- Disassembly
- Assembly
- BLADE CYLINDER
- Testing
- Removal and Installation
- Parts Identification
- Disassembly
- Assembly
- TRACK FRAME EXPANSION CYLINDER
- Testing
- Removal And Installation
- Parts Identification
- Disassembly
- Assembly
- MAIN RELIEF VALVE
- Testing And Adjusting The Main Relief Valve
- PORT RELIEF VALVES
- Testing And Adjusting The Port Relief Valve Pressure
- CROSSPORT RELIEF VALVES
- Testing And Adjusting The Crossport Relief Valve
- PRESSURE REDUCING VALVE
- Testing And Adjusting The Pressure Reducing Valve
- HYDRAULIC CONTROL VALVE (320 / 322)
- Description
- Removal And Installation
- Parts Identification
- Disassembly
- Auxiliary Valve Section Disassembly And Assembly
- Blade Valve Section Disassembly And Assembly
- Slew Valve Section Disassembly And Assembly
- Left Travel Valve Section Disassembly and Assembly
- Boom Valve Section Disassembly and Assembly
- Bucket Valve Section Disassembly and Assembly
- Arm Valve Section Disassembly and Assembly
- Boom Swing Valve Section Disassembly And Assembly
- Right Travel Valve Section Disassembly And Assembly
- Assembly
- HYDRAULIC CONTROL VALVE (320L)
- Description
- Removal And Installation
- Parts Identification
- Disassembly
- Auxiliary Valve Section Disassembly And Assembly
- Blade Valve Section Disassembly And Assembly
- Slew Valve Section Disassembly And Assembly
- Left Travel Valve Section Disassembly And Assembly
- Boom Valve Section Disassembly And Assembly
- Bucket Valve Section Disassembly And Assembly
- Arm Valve Section Disassembly And Assembly
- Boom Swing Valve Section Disassembly And Assembly
- Right Travel Valve Section Disassembly And Assembly
- Assembly
- HYDRAULIC PUMP
- Testing The Hydraulic Pump
- Removal And Installation
- Coupler Removal And Installation
- Parts Identification
- Disassembly
- Assembly
- MANIFOLD ASSEMBLY/ACCUMULATOR
- Description
- Removal And Installation
- Parts Identification (S/N 223911001 – 223911247 & S/N 224011001 – 224012293)
- Disassembly (S/N 223911001 – 223911247 & S/N 224011001 – 224012293)
- Assembly (S/N 223911001 – 223911247 & S/N 224011001 – 224012293)
- Parts Identification (S/N 223911248 & Above & S/N 224012294 & Above)
- Disassembly (S/N 223911248 & Above & S/N 224012294 & Above)
- Assembly (S/N 223911248 & Above & S/N 224012294 & Above)
- TRAVEL MOTOR
- Removal and Installation
- Parts Identification
- Disassembly
- Assembly
- SWIVEL JOINT
- Removal And Installation
- Parts Identification 320
- Parts Identification 322
- Disassembly
- Assembly
- SWING MOTOR
- Removal and Installation
- Parts Identification
- Disassembly
- Assembly
- CONTROL PATTERN SELECTOR VALVE
- Removal And Installation
- Parts Identification
- Disassembly
- Assembly
- RIGHT CONTROL LEVER (JOYSTICK)
- Testing
- Handle Removal And Installation
- Removal And Installation
- Parts Identification
- Disassembly
- Assembly
- LEFT CONTROL LEVER (JOYSTICK)
- Testing
- Handle Removal And Installation
- Removal And Installation
- Parts Identification
- Disassembly
- Assembly
- HYDRAULIC FILTER MOUNT
- HYDRAULIC RESERVOIR
- OIL COOLER
- UNDERCARRIAGE
- BLADE
- Extension Removal And Installation
- Blade Removal And Installation
- TRACKS
- Track Lug Height
- Adjustment
- Removal And Installation
- TRACK FRAME
- Disassembly And Assembly
- Removal And Installation Of Expandable Track Frame (322 Only)
- Recoil Spring Disassembly And Assembly
- TRACK DAMAGE IDENTIFICATION
- Cutting Of The Steel Cords
- Causes Of The Damage
- Abrasion Of Embedded Metals
- Separation Of Embedded Metals
- Separation Of Embedded Metals Due To Corrosion
- Cuts On The Lug Side Rubber
- Cracks On The Lug Side Rubber Due To Fatigue
- Lug Abrasion
- Cracks And Cuts On The Lug Side Rubber
- Abrasion Of The Track Roller Side
- Cuts On The Edges Of The Track Roller Side
- TRACK IDLER
- Parts Identification
- Disassembly
- Assembly
- TRACK ROLLER
- Parts Identification
- Disassembly
- Assembly
- SWING CIRCLE GEAR
- UPPERSTRUCTURE & SWING SECTION
- UPPERSTRUCTURE
- ROPS CANOPY
- CAB
- Removal And Installation
- Door Removal And Installation
- Front Window Removal And Installation
- Right Side Rear Sliding Window Removal And Installation
- Right Side Front Sliding Window Removal And Installation
- Glass Removal
- Glass Installation
- Glass Installation (Cont’d)
- SEAT AND SEAT MOUNT
- RIGHT CONSOLE
- Console Cover Removal And Installation (Cab Models 320L, 320, 322 & ROPS Canopy Model 320L)
- Console Cover Removal And Installation (ROPS Canopy Models 320 & 322)
- Gas Spring Removal And Installation (ROPS Canopy Models 320 & 322)
- Lock Lever Removal And Installation (ROPS Canopy Models 320 & 322)
- Adjustment (ROPS Canopy Models 320 & 322)
- Latch Hook Removal And Installation (ROPS Canopy 320 & 322)
- Latch Hook Disassembly And Assembly (ROPS Canopy Models 320 & 322)
- Cab Models (320L, 320 & 322, And ROPS Canopy Model 320L)
- Upper Console Removal And Installation
- Console Base Removal And Installation
- LEFT CONSOLE
- Console Cover Removal And Installation
- Gas Spring Removal And Installation
- Lock Lever Removal And Installation
- Adjustment
- Latch Hook Removal And Installation
- Latch Hook Disassembly And Assembly
- Upper Console Removal And Installation
- Console Base Removal And Installation
- ENGINE SPEED CONTROL
- Removal and Installation
- Engine Speed Control Cable Removal and Installation
- BLADE CONTROL
- Removal and Installation
- Disassembly And Assembly
- RIGHT PEDAL
- Right Pedal Removal And Installation
- Disassembly And Assembly
- Linkage Removal And Installation
- Linkage Disassembly And Assembly
- LEFT PEDAL
- Removal And Installation
- Disassembly And Assembly
- TRAVEL CONTROLS
- Removal And Installation
- Disassembly And Assembly
- CONTROL LINKAGE ASSEMBLY
- Removal And Installation
- Left Pedal Linkage Disassembly And Assembly
- Right Travel Control Linkage Disassembly And Assembly
- Left Travel Control Linkage Disassembly And Assembly
- Linkage Rod Removal And Installation
- Linkage Rod Adjustment
- FLOORMAT AND FLOORPLATES
- FUEL TANK
- HORN
- SWING FRAME
- Removal And Installation
- Bushing Replacement
- Swing Frame Bushing Removal
- Swing Frame Bushing Installation
- Boom Pivot Bushing Removal And Installation
- BOOM
- Removal And Installation
- Boom Bushing Removal And Installation
- ARM
- Removal And Installation
- Arm To Boom Bushing Removal And Installation
- Arm To Bucket And Bucket Link Bushing Removal And Installation
- BUCKET
- TAILGATE
- Removal And Installation
- Latch Removal And Installation
- SWING LOCK
- BLADE EXTENSION TRAY
- LEFT PEDAL
- Not Available At Time Of Print
- ELECTRICAL SYSTEM AND ANALYSIS
- ELECTRICAL SCHEMATICS
- ELECTRICAL SYSTEM
- Troubleshooting Chart
- Description
- Fuses
- Relays And Diodes
- BATTERY
- Servicing
- Removing And Installing The Battery
- Using A Booster Battery (Jump Starting)
- ALTERNATOR
- Description
- Tests
- Alternator Output Test
- Full Field Test
- Alternator Regulator Test
- Alternator Regulator Test With Voltmeter
- Removal And Installation
- Parts Identification
- Disassembly And Assembly
- STARTER
- Removal And Installation
- Parts Identification
- Disassembly And Assembly
- Cleaning and Inspection
- LIGHTS
- Upper Structure Light Removal And Installation
- Boom Light Removal And Installation
- Boom Light Disassembly And Assembly
- Light Switch Removal And Installation
- TWO-SPEED SWITCH
- FUEL LEVEL SENDER
- Removal and Installation
- Testing
- MICROSWITCH
- Adjustment
- Testing
- Removal And Installation
- ENGINE SERVICE
- TROUBLESHOOTING
- SPARK ARRESTOR MUFFLER
- AIR CLEANER
- RADIATOR
- ENGINE COMPONENTS AND TESTING (S/N 223911001 – 223911621, S/N 224011001 – 224013374)
- Valve Clearance Adjustment
- Engine Compression Checking
- Fuel Shut-Off Solenoid Removal And Installation
- Fuel Shut-Off Timer Removal And Installation
- Fuel Injection Pump Check
- Fuel Injection Pump Removal And Installation
- Fuel Injection Pump Timing
- Fuel Injector Removal And Installation
- Fuel Injector Checking
- Glow Plug Removal And Installation
- Glow Plug Checking
- ENGINE COMPONENTS AND TESTING (S/N 223911622 & Above, S/N 224013375 & Above)
- Valve Clearance Adjustment
- Engine Compression Checking
- Fuel Shut-Off Solenoid Removal And Installation
- Fuel Shut-Off Timer Removal And Installation
- Fuel Injection Pump Check
- Fuel Injection Pump Removal And Installation
- Fuel Injection Pump Timing
- Fuel Injector Removal And Installation
- Fuel Injector Checking
- Glow Plug Removal And Installation
- ENGINE
- ENGINE FLYWHEEL
- Removal And Installation
- Hydraulic Pump Coupler
- Flywheel Ring Gear
- RECONDITIONING THE ENGINE (S/N 223911001 – 223911621, S/N 224011001 – 224013374)
- Cylinder Head Removal And Installation
- Cylinder Head Disassembly And Assembly
- Cylinder Head, Servicing
- Cylinder Head Top Clearance
- Valve Guide, Checking
- Valve And Valve Seat Reconditioning
- Valve Spring
- Rocker Arm And Shaft, Checking
- Timing Gearcase Cover Removal And Installation
- Idler Gear And Camshaft Removal And Installation
- Idler Gear and Shaft, Servicing
- Timing Gears Checking Backlash
- Fuel Camshaft Removal And Installation
- Fuel Camshaft Governor
- Crankshaft Gear Removal And Installation
- Oil Pump Removal And Installation
- Oil Pump, Service
- Engine Oil Pressure, Checking
- Relief Valve
- Piston And Connecting Rod Removal And Installation
- Piston And Connecting Rod, Servicing
- Connecting Rod Alignment
- Crankshaft And Bearings Removal And Installation
- Crankshaft And Bearings, Servicing
- Cylinder Bore, Checking
- Water Pump Removal And Installation
- Water Pump Disassembly And Assembly
- RECONDITIONING THE ENGINE (S/N 223911622 & Above, S/N 224013375 & Above)
- Cylinder Head Removal And Installation
- Cylinder Head Disassembly And Assembly
- Cylinder Head, Servicing
- Cylinder Head Top Clearance
- Valve Guide, Checking
- Valve And Valve Seat Reconditioning
- Valve Spring
- Rocker Arm And Shaft, Checking
- Timing Gearcase Cover Removal And Installation
- Idler Gear And Camshaft Removal And Installation
- Idler Gear and Shaft, Servicing
- Timing Gears Checking Backlash
- Fuel Camshaft Removal And Installation
- Fuel Camshaft Governor
- Crankshaft Gear Removal And Installation
- Oil Pump Removal And Installation
- Oil Pump, Service
- Engine Oil Pressure, Checking
- Relief Valve
- Piston And Connecting Rod Removal And Installation
- Piston And Connecting Rod, Servicing
- Connecting Rod Alignment
- Crankshaft And Bearings Removal And Installation
- Crankshaft And Bearings, Servicing
- Cylinder Bore, Checking
- Water Pump Removal And Installation
- Water Pump Disassembly And Assembly
- HEATER
- SPECIFICATIONS
- SPECIFICATIONS
- 320/322 Excavator Machine Dimensions
- Performance
- Controls
- Engine
- Hydraulic System
- Hydraulic Cylinders
- Hydraulic Cycle Times
- Drive System
- Under Carriage
- Track
- Electrical
- ENGINE SPECIFICATIONS
- Fuel Injection Nozzles
- Fuel Injection Pump
- Cylinder Head
- Valves
- Valve Springs
- Rocker Arms
- Camshaft
- Cylinders
- Piston Rings
- Pistons
- Connecting Rods
- Oil Pump
- Crankshaft
- Timing Gear
- Thermostat
- Engine Bolt Torque
- Crankshaft Re-Grind Data
- TORQUE SPECIFICATIONS
- Torque For General SAE Bolts
- Torque For General Metric Bolts
- HYDRAULIC CONNECTION SPECIFICATIONS
- O-ring Face Seal Connection
- Straight Thread O-ring Fitting
- Tubelines And Hoses
- Flare Fitting
- O-ring Flare Fitting
- Port Seal Fitting
- HYDRAULIC FLUID SPECIFICATIONS
- FUEL, COOLANT AND LUBRICANTS
- CONVERSIONS
- Decimal And Millimeter Equivalents
- U.S. To Metric Conversion Chart
- SMR
- 320/322-1
- 320/322-2
- 320/322-3
- 320/322-4
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