On a real job, this T35120 VersaHANDLER is the machine you're using to unload trucks, place pallets on scaffolding, or boom material over a foundation wall. The service manual is what I'd grab when I'm in a muddy yard with a laptop on the tailgate, trying to sort a hydraulic issue or an electrical fault without making three parts runs. You reach for this when the warranty's gone, the dealer can't get there fast, and you need the right tear-down steps and test specs the first time.
What this manual helps you do
- Diagnose hydraulic problems in the boom, outriggers, and auxiliary circuits using step-by-step pressure and flow checks
- Trace and repair electrical faults using wiring diagrams and connector pinouts instead of guessing with a test light
- Follow correct disassembly and reassembly sequences for boom sections, cylinders, axles, and driveline components
- Check and set adjustments on steering, boom wear pads, brakes, and telehandler stability systems
- Replace and time engine and drivetrain components with the right order of operations and spec references
Who this is for
This is for anyone working on a Bobcat T35120 VersaHANDLER TTC telehandler in the A8GJ11001-A8GJ99999 serial range: small contractors, rental fleets, shop mechanics, and field techs. If you just need basic controls or daily checks, you want the operator's handbook instead, not this manual.
FAQ
Q: Is this a searchable PDF, and can I read the wiring diagrams on a laptop or tablet?
A: These manuals are usually text-searchable PDFs, and the wiring diagrams are laid out so you can zoom in and read pin labels clearly.
Q: How do I know it fits my machine?
A: Check your serial plate. If your T35120 VersaHANDLER TTC serial number falls between A8GJ11001 and A8GJ99999, this is the right manual.
Q: Is this the right document if I'm doing full repairs, not just maintenance?
A: Yes, this is the workshop-level service manual, meant for diagnostics, tear-down, and repair, not just fluid changes.
Bottom line, if you own or maintain a T35120 in that A8GJ serial range and plan to do your own real repairs, this is the manual you want. If you're only learning to run the machine, skip this one.
📘 Show Index
Table of Contents:
- MAINTENANCE SAFETY
- CONTENTS
- FOREWORD
- FOREWORD
- SAFETY INSTRUCTIONS
- FIRE PREVENTION
- Maintenance
- Operation
- Electrical
- Hydraulic System
- Fueling
- Starting
- Spark Arrestor Exhaust System
- Welding And Grinding
- Fire Extinguishers
- SERIAL NUMBER LOCATION
- Telescopic Handler Serial Number
- Engine Serial Number
- Other Serial Numbers
- DELIVERY REPORT
- BOBCAT TELESCOPIC HANDLER IDENTIFICATION
- SAFETY AND MAINTENANCE
- LIFTING AND BLOCKING THE TELESCOPIC HANDLER
- OPERATOR CAB (ROPS / FOPS)
- TRANSPORTING THE TELESCOPIC HANDLER ON A TRAILER
- Loading And Unloading
- Fastening
- TOWING THE TELESCOPIC HANDLER
- SERVICE SCHEDULE
- AIR CLEANER SERVICE
- Replacing Filter Element(s)
- ENGINE COOLING SYSTEM
- Cleaning
- Removing And Replacing The Coolant
- Checking Level
- FUEL SYSTEM
- Fuel Specifications
- Biodiesel Blend Fuel
- Filling The Fuel Tank
- Secondary Fuel Filter
- Primary Fuel Filter (Pre-Filter)
- Removing Air From The Fuel System
- ENGINE LUBRICATION SYSTEM
- Checking And Adding Engine Oil
- Engine Oil Chart
- Removing And Replacing Oil And Filter
- HYDRAULIC / HYDROSTATIC SYSTEM
- Checking And Adding Fluid
- Hydraulic / Hydrostatic Fluid Chart
- Removing And Replacing Hydraulic Fluid
- Removing And Replacing Hydraulic / Hydrostatic Filter
- Hydraulic Tank Breather
- AXLES (FRONT AND REAR)
- Checking And Adding Oil (Planetary Carrier)
- Removing And Replacing Oil (Planetary Carrier)
- Checking And Adding Oil (Rear Differential)
- Removing And Replacing Oil (Rear Differential)
- Checking And Adding Oil (Front Differential)
- Removing And Replacing Oil (Front Differential)
- Checking And Adding Oil (Front Drop Box)
- Removing And Replacing Oil (Front Drop Box)
- LUBRICATING THE TELESCOPIC HANDLER
- ATTACHMENT CARRIER
- Inspection And Maintenance
- TIRE MAINTENANCE
- Wheel Nuts
- Rotating
- Mounting
- APPROVED BOOM STOP
- Installing The Approved Boom Stop
- Removing The Approved Boom Stop
- ENGINE COVER
- CHAIN
- Checking And Adjustment Procedure
- Extend / Retract Chain Wear Check
- TELESCOPIC HANDLER STORAGE AND RETURN TO SERVICE
- Storage
- Return To Service
- STOPPING THE ENGINE AND LEAVING THE TELESCOPIC HANDLER
- EMERGENCY EXIT
- HYDRAULIC SYSTEM
- HYDRAULIC SCHEMATIC
- HYDRAULIC SYSTEM INFORMATION
- Glossary Of Hydraulic / Hydrostatic Symbols
- Troubleshooting Chart
- Tightening Procedures
- LIFT CYLINDER
- Removal And Installation
- Parts Identification
- Disassembly
- Assembly
- BUCKET POSITIONING CYLINDER
- Removal And Installation
- Parts Identification
- Disassembly
- Assembly
- EXTENSION CYLINDER
- Cylinder Group Removal And Installation
- Parts Identification
- Disassembly
- Assembly
- TILT CYLINDER
- Removal And Installation
- Parts Identification
- Disassembly
- Assembly
- STEERING CYLINDER (FRONT)
- Removing The Steering Cylinder
- Installing The Steering Cylinder
- Disassembling The Steering Cylinder
- Assembling The Steering Cylinder
- STEERING CYLINDER (REAR)
- Removing The Steering Cylinder
- Installing The Steering Cylinder
- Disassembling The Steering Cylinder
- Assembling The Steering Cylinder
- DRIVE BOX
- Parts Identification
- Disassembly
- Assembly
- Special Tools
- MAIN RELIEF VALVE
- Testing And Adjustment
- Removal And Installation
- QUICK-TACH CYLINDER
- Removal And Installation
- Parts Identification
- Disassembly
- Assembly
- FRAME LEVELING CYLINDER
- Removal And Installation
- Parts Identification
- Disassembly
- Assembly
- STEERING MODE VALVE BLOCK
- Removal And Installation
- Parts Identification
- Disassembly
- Solenoid Testing
- Assembly
- BRAKE VALVE
- Removal And Installation
- Disassembly And Assembly
- GEAR PUMP
- Removal And Installation
- Parts Identification
- Disassembly And Assembly
- FAN MOTOR
- Removal And Installation
- Parts Identification
- Disassembly And Assembly
- HYDRAULIC FLUID RESERVOIR
- STEERING VALVE
- Removal And Installation
- Parts Identification
- Disassembly
- Inspection
- Assembly
- HYDRAULIC CONTROL VALVE
- Troubleshooting Chart (Controllers)
- Telescoping Valve Section Troubleshooting
- Auxiliary Valve Section Troubleshooting
- Troubleshooting Chart (Control Valve)
- Removal And Installation
- Parts Identification
- Disassembly And Assembly
- End Housing Disassembly And Assembly
- Lifting Valve Section Disassembly And Assembly
- Tilting Valve Section Disassembly And Assembly
- Telescoping Valve Section Disassembly And Assembly
- Auxiliary / Frame Leveling Valve Section Disassembly And Assembly
- Inlet-Outlet Valve Section Disassembly And Assembly
- PORT RELIEF VALVES
- FLOW CONTROL VALVE
- JOYSTICK
- Removal And Installation
- PARKING BRAKE
- Parking Brake Valve Removal And Installation
- Parking Brake Valve Disassembly And Assembly
- Parking Brake Valve Disassembly And Assembly (Cont’d)
- PRESSURE REDUCING VALVE
- Testing
- Removal And Installation
- Disassembly And Assembly
- ACCUMULATOR
- TOW VALVE
- Removal And Installation
- Disassembly And Assembly
- STABILIZER CYLINDER (IF EQUIPPED)
- Removal
- Parts Identification
- Disassembly
- Assembly
- Installation
- STABILIZER CONTROL VALVE (IF EQUIPPED)
- Parts Identification
- Removal
- Installation
- HYDROSTATIC SYSTEM
- HYDROSTATIC SYSTEM INFORMATION
- Troubleshooting Chart
- Replenishing Valve Function
- OIL COOLER
- HYDROSTATIC DRIVE MOTOR
- Removal And Installation
- Parts Identification
- Disassembly
- Inspection
- Assembly
- HYDROSTATIC PUMP
- Removal And Installation
- Parts Identification
- Disassembly
- Inspection
- Assembly
- DRIVE SYSTEM
- TROUBLESHOOTING
- AXLE AND DIFFERENTIAL (FRONT)
- General Information
- Planetary Carrier Parts Identification
- Planetary Carrier Disassembly
- Steering Knuckle And Drive Axle Parts Identification
- Steering Knuckle Disassembly
- Drive Axle Disassembly
- Brake System Parts Identification
- Brake System Disassembly
- Differential Parts Identification
- Differential Disassembly
- Bevel Pinion Parts Identification
- Bevel Pinion Disassembly
- Bevel Pinion Assembly
- Differential Assembly
- Brake System Assembly
- Drive Axle Assembly
- Steering Knuckle Assembly
- Planetary Carrier Assembly
- Special Tools
- AXLE AND DIFFERENTIAL (REAR)
- General Information
- Planetary Carrier Parts Identification
- Steering Knuckle And Drive Axle Parts Identification
- Steering Knuckle Disassembly
- Differential And Bevel Pinion Parts Identification
- Differential Disassembly
- Bevel Pinion Disassembly
- Bevel Pinion Assembly
- Differential Assembly
- Steering Knuckle Assembly
- Planetary Carrier Assembly
- Special Tools
- FRONT AXLE
- AXLE TOE-IN
- PARKING BRAKE
- Releasing The Brake For Towing
- Re-Activating The Brake
- STEERING ANGLE ADJUSTMENT
- DRIVE SHAFT
- SERVICE BRAKE
- Description
- Bleeding The Brake Circuit
- REAR AXLE
- MAINFRAME
- OPERATOR CAB (S/N A8HD12999 & BELOW, S/N A8GW12999 & BELOW, S/N A8GT12999 & BELOW, S/ N A8GV12999 & BELOW, S/N A8GJ12999 & BELOW)
- OPERATOR CAB (S/N A8HD13000 & ABOVE, S/N A8GW13000 & ABOVE, S/N A8GT13000 & ABOVE, S/ N A8GV13000 & ABOVE, S/N A8GJ13000 & ABOVE)
- OPERATOR SEAT
- FIXED BOOM
- END BOOM
- WEAR PADS (FRONT)
- WEAR PADS (REAR)
- ENGINE COVER
- Gas Cylinder Removal And Installation
- Removal And Installation
- AIR INTAKE COWLING
- FUEL TANK
- QUICK-TACH
- REAR WEIGHTS
- FENDER
- PIVOT LINK
- JOYSTICK PANEL (S/N A8HD12999 & BELOW, S/N A8GW12999 & BELOW, S/N A8GT12999 & BELOW, S/ N A8GV12999 & BELOW, S/N A8GJ12999 & BELOW)
- JOYSTICK PANEL (S/N A8HD13000 & ABOVE, S/N A8GW13000 & ABOVE, S/N A8GT13000 & ABOVE, S/ N A8GV13000 & ABOVE, S/N A8GJ13000 & ABOVE)
- DASH COVER / STEERING COLUMN COVER (S/N A8HD12999 & BELOW, S/N A8GW12999 & BELOW, S/ N A8GT12999 & BELOW, S/NA8GV12999 & BELOW, S/N A8GJ12999 & BELOW)
- DASH COVER / STEERING COLUMN COVER (S/N A8HD13000 & ABOVE, S/N A8GW13000 & ABOVE, S/ N A8GT13000 & ABOVE, S/N A8GV13000 & ABOVE, S/N A8GJ13000 & ABOVE)
- INTERMEDIATE BOOM
- BOOM TRAY
- STABILIZER FRAME (IF EQUIPPED)
- ELECTRICAL SYSTEM & ANALYSIS
- ELECTRICAL SCHEMATIC
- ELECTRICAL SYSTEM INFORMATION (S/N A8HD12999 & BELOW, S/N A8GW12999 & BELOW, S/ N A8GT12999 & BELOW, S/N A8GV12999 & BELOW, S/N A8GJ12999 & BELOW)
- Troubleshooting Chart
- Description
- Fuses, Diode And Relay Location / Identification
- ELECTRICAL SYSTEM INFORMATION (S/N A8HD13000 & ABOVE, S/N A8GW13000 & ABOVE, S/ N A8GT13000 & ABOVE, S/N A8GV13000 & ABOVE, S/N A8GJ13000 & ABOVE)
- Troubleshooting Chart
- Description
- Fuses, Diode And Relay Location / Identification
- BATTERY
- Removal And Installation
- Servicing
- Using A Booster Battery (Jump Starting)
- ALTERNATOR
- Removal And Installation
- Belt Adjustment
- Belt Replacement
- STARTER
- Testing
- Removal And Installation
- LIGHTS
- Rear Light Removal And Installation
- Front Light Removal And Installation
- TRAVEL / SIGNAL LEVER (S/N A8HD12999 & BELOW, S/N A8GW12999 & BELOW, S/N A8GT12999 & BELOW, S/N A8GV12999 & BELOW, S/N A8GJ12999 & BELOW)
- TRAVEL / SIGNAL LEVER (S/N A8HD13000 & ABOVE, S/N A8GW13000 & ABOVE, S/N A8GT13000 & ABOVE, S/N A8GV13000 & ABOVE, S/N A8GJ13000 & ABOVE)
- INSTRUMENT PANEL
- SWITCH PANEL (S/N A8HD12999 & BELOW, S/N A8GW12999 & BELOW, S/N A8GT12999 & BELOW, S/ N A8GV12999 & BELOW, S/N A8GJ12999 & BELOW)
- Removal And Installation
- Parts Description
- SWITCH PANEL (S/N A8HD13000 – 14999, S/N A8GW13000 – 14999, S/N A8GT13000 – 14999, S/N A8GV13000 – 14999, S/N A8GJ13000 – 14999)
- SWITCH PANEL (S/N A8HD15000 & ABOVE, S/N A8GW15000 & ABOVE, S/N A8GT15000 & ABOVE, S/ N A8GV15000 & ABOVE, S/N A8GJ15000 & ABOVE)
- BRAKE LIGHT SWITCH
- Removal And Installation
- Adjustment
- WIPER MOTOR (Front)
- WIPER MOTOR (TOP)
- WIPER MOTOR (REAR)
- PEDAL ASSEMBLY
- INCHING SWITCH
- Removal And Installation
- Adjustment
- SERVICE SOFTWARE
- Connecting The Laptop Computer
- Entering The Service Software
- Monitor Screen
- Warnings Screen
- Calibrate Inch Pedal
- Calibrate Creep Potentiometer
- Program / Update Susmic Controller
- FRAME LEVEL SPEED SWITCH
- Description
- Removal
- Installation
- LONGITUDINAL STABILITY INDICATOR CALIBRATION (S/N A8HD11001-14999, S/N A8GW11001-14999, S/N A8GT11001-14999, S/N A8GV11001-14999, S/N A8GJ11001-14999)
- Fitting The Sensor
- Calibration Procedure
- LLMI / LLMC SYSTEM (S/N A8HD15000 & ABOVE, S/N A8GW15000 & ABOVE, S/N A8GT15000 & ABOVE, S/ N A8GV15000 & ABOVE, S/N A8GJ15000 & ABOVE)
- System Calibration
- Calibration Test
- System Failure Reports
- System Components Identification
- LLMS Removal
- LLMS Installation
- LLMC Controller Removal
- LLMC Controller Installation
- ENGINE SERVICE
- ENGINE INFORMATION
- Specifications
- Troubleshooting
- ENGINE SPEED CONTROL
- MUFFLER
- AIR CLEANER
- Housing Removal And Installation
- OIL COOLER / RADIATOR
- Removal And Installation
- Disassembly And Assembly
- ENGINE AND ENGINE MOUNTS
- ENGINE COMPONENTS AND TESTING
- Fuel Injection Pump Removal
- Fuel Injection Pump Installation
- Fuel Injectors Removal And Installation
- Checking The Fuel Lift Pump
- Fuel Lift Pump Removal And Installation
- Compression Checking
- Glow Plugs Checking
- Glow Plugs Removal And Installation
- ENGINE TIMING
- ENGINE / HYDROSTAT ASSEMBLY
- FLYWHEEL AND HOUSING
- Removal And Installation
- Ring Gear Removal
- Ring Gear Installation
- RECONDITIONING THE ENGINE
- Turbocharger Troubleshooting
- Turbocharger Description
- Turbocharger Removal And Installation
- Exhaust Manifold Removal And Installation
- Fuel Injector Cover Removal And Installation
- Rocker Cover Removal And Installation
- Cylinder Head Removal
- Cylinder Head Inspection
- Cylinder Head Installation
- Rocker Shaft Disassembly And Assembly
- Valve Removal
- Valve Springs Checking
- Valve Depth Checking
- Valve Guides Checking
- Valve Guide Removal
- Valve Guide Installation
- Valves Checking
- Cutting A Valve Seat
- Valve Seat Assembly
- Changing Valve Springs (With Cylinder Head Installed)
- Valve Clearance Adjustment
- Timing Case And Drive Assembly Description
- Timing Cover Removal
- Timing Cover Installation
- Crankshaft Pulley Removal And Installation
- Front Oil Seal Removal And Installation
- Timing Case And Gear Removal
- Timing Case And Gear Installation
- Camshaft And Tappets Removal
- Camshaft And Tappets Installation
- Pistons And Connecting Rods Description
- Pistons And Connecting Rods Removal
- Pistons And Connecting Rods Disassembly
- Piston Ring End Gap
- Piston Ring Installation
- Piston Ring Groove Clearance
- Connecting Rod Inspection
- Connecting Rod Bushing Replacement
- Piston And Connecting Rod Assembly
- Piston And Connecting Rod Installation
- Checking Piston Height
- Crankshaft And Bearings Description
- Crankshaft And Bearings Removal
- Inspection Of Crankshaft And Bearings
- Crankshaft And Bearings Installation
- Rear Oil Seal Removal
- Rear Oil Seal Housing Positioning
- Rear Oil Seal Installation
- Checking Crankshaft End Play
- Cooling System Description
- Thermostat Removal and Installation
- Thermostat Testing
- Lubricating Oil Cooler Removal And Installation
- Water Pump Removal
- Water Pump Installation
- Engine Lubrication System Description
- Oil Filter Adapter Removal And Installation
- Oil Pan Removal And Installation
- Oil Screen And Pick-up Tube
- Oil Pump Removal
- Oil Pump Installation
- Oil Pump Disassembly And Assembly
- Oil Pressure Relief Valve Disassembly And Assembly
- Engine Block Description
- Engine Block Disassembly And Assembly
- Piston Cooling Jet Removal
- Piston Cooling Jet Installation
- Piston Cooling Jet Alignment
- Inspection
- Cylinder Liner Inspection
- Cylinder Liner Removal
- Cylinder Liner Installation
- HEATING, VENTILATION, AIR CONDITIONING
- AIR CONDITIONING SYSTEM FLOW
- Description
- Chart
- Components
- Safety Equipment
- REGULAR MAINTENANCE
- Filters
- Compressor And Alternator Drive Belt Inspection
- Cleaning The Condenser
- Air Conditioning Lubrication
- Air Conditioning Service Chart
- TROUBLESHOOTING
- Blower Motor Does Not Operate
- Blower Motor Operates Normally, But Air Flow Is Insufficient
- Insufficient Cooling Although Air Flow And Compressor Operation Are Normal
- The Compressor Does Not Operate At All, Or Operates Improperly
- Gauge Pressure Related Troubleshooting
- Troubleshooting Tree
- Temperature / Pressure Chart
- Poor A/C Performance
- HVAC Repairs And Leaks
- Electrical System
- SYSTEM CHARGING AND RECLAMATION
- Reclamation Procedure
- Charging Procedure With A Manifold Gauge Set
- Charging Procedure
- COMPRESSOR
- Removal And Installation
- Oil
- Oil Check
- Clutch Disassembly And Assembly
- CONDENSER (S/N A8HD12999 & BELOW, A8GW12999 & BELOW, A8GT12999 & BELOW, A8GV12999 & BELOW, A8GJ12999 & BELOW)
- CONDENSER (S/N A8HD13000 & ABOVE, A8GW13000 & ABOVE, A8GT13000 & ABOVE, A8GV13000 & ABOVE, A8GJ13000 & ABOVE)
- RECEIVER / DRIER
- PRESSURE SWITCH
- EVAPORATOR / BLOWER UNIT (S/N A8HD12999 & BELOW, S/N A8GW12999 & BELOW, S/N A8GT12999 & BELOW, S/N A8GV12999 & BELOW, S/N A8GJ12999 & BELOW)
- EVAPORATOR / BLOWER UNIT (S/N A8HD13000 & ABOVE, A8GW13000 & ABOVE, A8GT13000 & ABOVE, A8GV13000 & ABOVE, A8GJ13000 & ABOVE)
- EXPANSION VALVE (S/N A8HD12999 & BELOW, A8GW12999 & BELOW, A8GT12999 & BELOW, A8GV12999 & BELOW, A8GJ12999 & BELOW)
- EXPANSION VALVE (S/N A8HD13000 & ABOVE, A8GW13000 & ABOVE, A8GT13000 & ABOVE, A8GV13000 & ABOVE, A8GJ13000 & ABOVE)
- HEATER ASSEMBLY
- Removal And Installation
- Fan Removal And Installation
- Core Removal And Installation
- SPECIFICATIONS
- (T35100) TELESCOPIC HANDLER SPECIFICATIONS
- Dimensional Specifications
- Performance Specifications
- Weights
- Engine
- Controls
- Drive System
- Traction
- Steering
- Brakes
- Fluid Capacities
- Hydraulic System
- Electrical
- Instruments
- Environmental
- Temperature Range
- (T35100L) TELESCOPIC HANDLER SPECIFICATIONS
- Dimensional Specifications
- Performance Specifications
- Weights
- Engine
- Controls
- Drive System
- Traction
- Steering
- Brakes
- Fluid Capacities
- Hydraulic System
- Electrical
- Instruments
- Environmental
- Temperature Range
- (T35100SL) TELESCOPIC HANDLER SPECIFICATIONS
- Dimensional Specifications
- Performance Specifications
- Weights
- Engine
- Controls
- Drive System
- Traction
- Steering
- Brakes
- Fluid Capacities
- Hydraulic System
- Electrical
- Instruments
- Environmental
- Temperature Range
- (T35120L) TELESCOPIC HANDLER SPECIFICATIONS
- Dimensional Specifications
- Performance Specifications
- Weights
- Engine
- Controls
- Drive System
- Traction
- Steering
- Brakes
- Fluid Capacities
- Hydraulic System
- Electrical
- Instruments
- Environmental
- Temperature Range
- (T35120SL) TELESCOPIC HANDLER SPECIFICATIONS
- Dimensional Specifications
- Performance Specifications
- Weights
- Engine
- Controls
- Drive System
- Traction
- Steering
- Brakes
- Fluid Capacities
- Hydraulic System
- Electrical
- Instruments
- Environmental
- Temperature Range
- MACHINE TORQUE SPECIFICATIONS
- Axle
- Boom
- Drive Box
- Drive Motor
- Engine
- Hydraulic Pump
- TORQUE SPECIFICATIONS FOR BOLTS
- 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
- Port Seal Fitting
- HYDRAULIC / HYDROSTATIC FLUID SPECIFICATIONS
- CONVERSIONS
- Decimal And Millimeter Equivalents
- U.S. To Metric Conversion
- ALPHABETICAL INDEX
- SERVICE MANUAL REVISION
- Revision No: T35100(S)(L), T35120(S)L – 2
- Revision No: T35100(S)(L), T35120(S)L – 3
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