Repair Manual For New Holland TC21DA, TC24DA Tractors.
Manual includes step by step instructions, illustrations, diagrams. Remove, Install, disassemble, assemble, repair procedures, troubleshooting, and other servicing procedures. This repair manual provides the technical information
needed to properly service the New Holland tractor.
Format: PDF
Language: English
Pages: 720
Bookmarks: Yes
Searchable: Yes
Number: 87053140
Wiring Diagrams: Yes
Hydraulic Diagrams: Yes
Model
New Holland TC21DA, TC24DA
Contents
- General Information
Introduction
Precautionary Statements
Safety
The Tractor
Servicing The Tractor
Operating The Tractor
Driving The Tractor
Operating The Pto
Diesel Fuel
Safety Frame (Rops)
Safety Decals
Instruction Decals
Product Identification Plate
International Symbols
Specifications — Tc21Da, Tc24Da
General Dimensions — Tc21Da, Tc24Da
Minimum Hardware Tightening Torques
Lubricants
Adjustments - Engine Systems
–Engine Systems
—Description And Operation – General Information
Identification Chart
Cylinder Head And Valve Train Components
Cylinder Block Assembly
— Overhaul – Engine
—-Engine Preparation
Disassembly
—Fuel Injector And Glow Plug
Removal
—Oil Pressure Switch
Removal
—Temperature Sending Switch And Alternator
Removal
—Fan, Water Pump, And External Oil Tube
Removal
—Valve Cover
Removal
—Rocker Shaft And Push Rod
Removal
—Cylinder Head
Removal
—Valve Tappet
Removal
—Fuel Shut-Off Solenoid
Removal
—Engine Timing Gear Cover
Removal
—Timing Gears And Camshaft
Removal
—Oil Sump
Removal
—Oil Suction Pipe And Strainer
Removal
—Connecting Rods, Bearing And Pistons
Removal
—Flywheel
Removal
—Backplate And Oil Seal
Removal
—Crankshaft And Main Bearing
Removal
—Cylinder Head
Disassembly
Inspection
—Valve Seats
Inspection
—Valves
Inspection
—Valve Guides
Inspection
—Valve Springs
Inspection
—Rocker Arms
Inspection
—Push Rods
Inspection
—Cylinder Head
Assembly
—Cylinder Block
Inspection
—Pistons, Piston Rings, And Connecting Rods
Disassembly
—Piston
Inspection
—Piston Rings
Inspection
—Connecting Rods
Inspection
—Bearing Oil Clearance Check
Pistons, Piston Rings, and Connecting Rod
Assembly
—Crankshaft Main Bearings
Removal
Inspection
—Crankshaft
Inspection
Crankshaft Journal Wear Limit and Bearing Usage
–
—Crankshaft Front Main Bearing (Bushing)
Inspection
Replacement
—Crankshaft Main Bearing
Assembly
—Port Block
Removal
Installation
—Timing Gear
Inspection
—Camshaft
Disassembly
Inspection
Assembly
—Flywheel
Inspection
–
Timing Gear Housing
—Front Oil Seal And Steering Pump Seal
Replacement
—Crankshaft And Bearing Holder
Assembly
—Rear Oil Seal And Backplate
Assembly
—Flywheel
Installation
—Piston And Connecting Rod
Installation
—Oil Suction Pipe And Suction Strainer
Installation
—Oil Sump
Installation
—Camshaft And Camshaft Gear
Assembly
—Idler Gear, Oil Pump And Injection Timing
Installation
—Timing Gear Cover
Installation
—Crankshaft Pulley
Installation
—Fuel Injection Pump
Installation
—Power Steering Pump
Installation
–
Head Gasket
—Cylinder Head
Assembly
–
Valve Clearance Adjustment
—Valve Cover
Installation
—Fan, Water Pump And External Oil Tube
Installation
—Glow Plug And Connector
Installation
—Fuel Injector
Installation
—Fuel Piping
Installation
—Alternator And Temperature Sending Switch
Installation
—Exhaust Manifold, Radiator, And Air Cleaner
Installation
—Description Of Operation — Engine Lubrication System
Engine Oil Filter
—Oil Pump
Removal
Inspection
Installation And Adjustment
–
Engine Oil Pressure Check
—Oil Pressure Relief Valve
Removal
Installation
—Description Of Operation – Cooling System
–
—Maintenance
Coolant
Thermostat
Water Pump
Cooling Fan
Radiator
Radiator Cap
—Overhaul – Cooling System
—-Radiator
Removal
Inspection And Repair
Installation
—Water Pump And Thermostat
Removal
Inspection And Repair
Assembly
Installation
–
Troubleshooting
—Specification
Cylinder Head
Cylinder Block
Piston
Piston Ring
Connecting Rod
Crankshaft
Cramshaft
Valves
Push Rods
Rocker Arms
Lubrication System
Cooling System
–
Torque Specifications
—Special Tools
Compression Test And Tools
— Fuel System
—Description And Operation – Injection Pump
Pumping Elements
Delivery Valves
—-Injection Pump
Removal
Repair
Installation
—Timing And Governor Adjustments
Installation Using Original Pump And Drive Components
Install A New Pump Or Drive Component
Spill-Timing Procedure
Bleeding The Fuel System
Full Screw/High Idle Adjustment
—Description Of Operation – Governor
—-Governor
Disassembly
Assembly
Adjustments
—Description And Operation – Injectors
—-Injector
Removal
Disassembly
Assembly And Adjustment
Troubleshooting – General
Troubleshooting -Fuel Injectors
Troubleshooting – Governor
Specifications - Single Clutch
— Single Clutch
—Description And Operation – General Information
—-Single Clutch
Free Play Adjustment
—Separating The Tractor Between The Engine And Clutch Housing -9 X 3 Transmissions
Disassembly
Removal
Installation
Assembly
—Description And Overhaul – Servicing Clutch-Related Components
—-Clutch Pilot Bearing – 9 X 3 Gear Transmission Only
Removal
Inspection
Installation
—-Clutch Release Bearing
Removal
Inspection
Assembly
–
Flywheel Dimensions
—Clutch Cross Shaft Bushings
Removal
Assembly
—Clutch Pedal Bushings
Removal
Assembly
–
Clutch Linkage Adjustment
Troubleshooting
Specifications
Special Tools - Transmission Systems
–Transmission Systems
Introduction
—Description And Operation — 9 X 3 Gear Transmission
9 X 3 Gear Transmission — Power Flow
—Overhaul
Transmission Preparation
—-Separating The Tractor – Between The Clutch Housing And The Rear Transmission 9X3 Transmission
Removal
—-Transmission Shift Cover
Disassembly
Assembly
—-Input Shaft, Idler Gear, And Countershaft Gear
Removal
—-Main Shaft
Removal
—-Front Wheel Drive Shaft
Removal
—-Countershaft
Removal
—-Range And Rear Pto Shift Rail And Fork
Removal
—-Pinion Shaft
Removal
—-Pto Front Countershaft
Removal
—-Mid-Mount Pto Idler Shaft
Removal
—-Mid-Range Gear Case
Disassembly
Inspection
—-Mid-Range Gear Case
Assembly
—-Mid-Mount Pto Idler Shaft
Assembly
—-Pto Front Countershaft
Assembly
—-Rear Pto Countershaft
Assembly
—Pinion Shaft
Installation
—-Shift Rail And Fork
Installation
—-Countershaft
Assembly
—-Front Wheel Drive Shaft
Assembly
—-Front Wheel Drive Shift Cover
Assembly
—-Main Shaft
Assembly
—-Input Shaft, Idler Gear And Countershaft Gear
Assembly
—-Reconnecting The Tractor – Between The Clutch Housing And The Rear Transmission – 9 X 3 Transmission
Installation - Front Axle – Front Wheel Drive
— Front Axle – Front Wheel Drive
Description And Operation – Front Axle – Front Wheel Drive
—Overhaul
—-Front-Wheel Drive Front Axle
Removal
—-Front Axle
Disassembly
—-Differential
Disassembly
—-Differential
Inspection
—-Axle
Inspection
—-Differential
Assembly
—-Pinion
Assembly
Ring Gear To Pinion Backlash Check (Using Original Components)
Ring Gear To Pinion Backlash Check (Using New Components)
Shim Calculation – Alternate Method
Pinion-To-Ring Gear Tooth Contact Adjustment
Front-Wheel Drive Front Axle
Installation
Final Pinion And Wheel Shaft
Backlash Adjustment
—Troubleshooting
Front Axle
—Specifications
Front Wheel Drive - Differential And Rear Axle
— Differential And Rear Axle
—Description And Operation – General Information
Differential
Differential Lock
Rear Axle And Brakes
—Overhaul
—-Differential
Removal
—-Drive Pinion
Removal
—-Differential
Disassembly
Inspection
Assembly
—-Rear Axle
Disassembly
Inspection
Assembly
—-Differential Lock
Disassembly
Assembly
Specifications
—-Ring Gear And Pinion Gear Pattern Specification And Adjustment
Special Tools - Hydrostatic Transmission
— Hydrostatic Transmission
—Description And Operation – Hydrostatic Transmission
Variable Displacement Pump Operation
Fixed Displacement Motor Operation
—-Fluid Flow
Neutral Position
Forward Position
Reverse Position
—Overhaul – Hydrostatic Transmission
Transmission Preparation
Separation Between The Clutch Housing And The Extension Housing – The Extension
Housing And Rear Transmission
—-Hydrostatic Unit
Removal
Precautions Before Disassembly
—-Motor And Port Block
Disassembly
—-Hydrostatic Motor
Disassembly
—-Hydrostatic Motor Shaft
Disassembly
—-Charge Pump
Disassembly
—-Swash Plate
Disassembly
Inspection
—-Swash Plate/Charge Pump
Assembly
—-Hst Piston Pump Cylinder Block
Assembly
—-Hst Motor Cylinder Block
Assembly
—-Port Block
—-Neutral And Feed Valves
Disassembly
Inspection
Assembly
—-Charge Pump Relief Valve
Disassembly
Inspection
—-High Pressure Relief Valve
Removal
Installation
—-Hydrostatic Pump And Port Block
Assembly
—-Motor And Port Block
Assembly
—-Check Valve
Disassembly
Inspection
Assembly
—-Installation Of The Clutch Housing And The Extension Housing – The Extension
Housing And Rear Transmission
—-Pressure Tests
High Pressure Relief Valve
Charge Pump Pressure Relief Valve
—-Description And Operation – Gearbox
Gearbox
Overhaul – Gearbox
Removal
–
Separation Between The Clutch Housing And The Extension Housing – The Extension Housing And Rear Transmission
—-Transmission Drive Shaft And Pto Input Shaft
Removal
—-Main Bearing Holder Plate
Removal
—-Main Shaft
Removal
—-Fwd Drive Shaft (Fwd Model Only)
Removal
—-Countershaft
Removal
—-Range And Rear Pto Shift Rail And Fork
Removal
—-Pinion Shaft
Removal
—-Pto Front Countershaft
Removal
—-Mid-Mount Pto Idler Shaft
Removal
Inspection
—-Shift Rail And Fork
Installation
—-Mid-Mount Pto Idler Shaft
Assembly
—-Pto Front Countershaft
Assembly
—-Pinion Shaft
Installation
—-Countershaft
Assembly
—-Fwd Shaft (Fwd Models Only)
Assembly
—-Main Shaft
Assembly
—-Input Shaft, Transmission Drive Shaft, And Retaining Plate
Assembly
—-Front Wheel Drive Shaft Cover
Assembly
—-Installation Of The Clutch Housing And The Extension Housing – The Extension
Housing And Rear Transmission
—Overhaul And Adjustments – Control Linkage
Control Linkage
—Initial Adjustments 7
Control Rod
Pedal Stop
Hst Neutralizer
Removal
Disassembly
Inspection
Assembly
Installation
—Hst Neutral Adjustment84
–
—Linkage Damper
Removal
—Pedal
Removal
—Pedal Pivot Shaft
Removal
—Damper, Pivot Shaft, Pedal And Fwd Drive Shaft
Assembly
–
Troubleshooting
Specifications
Metric Bolt Torque Specifications
Special Tools - Power Take-Off Systems
— Power Take-Off Systems
—Description And Operation – Pto System
9 X 3 Gear Transmission
Hydrostatic Transmission
—Overhaul – Rear Pto
—- 9 X 3 Rear Pto Output Shaft
Removal
Inspection
Assembly
—-Hst Rear Pto Output Shaft
Removal
Inspection
Assembly
—Description And Operation — Mid-Mount Pto
Mid-Mount Power Take-Off
Overhaul – Mid-Mount Pto
9 X 3 Optional Mid-Mount Pto
—-Gearbox And Countershaft
Removal
Output Shaft
Removal
Inspection
Assembly
—-Gearbox And Countershaft
Assembly
–
Hydrostatic Transmission, Standard Mid-Mount Pto
—-Gearbox And Countershaft
Removal
Output Shaft
Removal
Inspection
Assembly
—-Gearbox And Countershaft
Assembly
—Specifications
Rear Pto
Mid-Mount Pto
–
Metric Bolt Torque Specifications - Brakes
— Brakes
—Overhaul
—-Brakes and Final Pinion
Removal
Inspection
Assembly
Brake Adjustment
–
Specifications
– Hydraulic System
— Hydraulic System
—Description and Operation – Hydraulic System
Hydraulic System Circuits
Oil Filter
Combination System Relief – Diverter Valve Manifold
Control Valve Assembly (HPL)
—-Oil Flow
Neutral Position
Lifting Position
Lowering Position
—-Cylinder Head And Flow Control Valve
—Overhaul – Hydraulic System
—-Lift Cylinder
Removal
Disassembly
Inspection And Repair
Assembly
—-Cylinder Head (Flow Control Valve)
Disassembly
Inspection
Assembly
—-Control Valve
Disassembly
Inspection
Assembly
—-Lowering Valve
Adjustment
—-Diverter Valve And Relief Valve Manifold Assembly
Removal
Disassembly
Inspection
Assembly
—Adjustments
—-Linkage
Adjustment Procedure
—-Control Lever
Adjustment Procedure
—Description And Operation – Hydraulic Pump
Hydraulic Pump And Filter
—-Hydraulic Pump
Disassembly
Inspection And Repair
Assembly
—Description And Operation – Remote Valves
Remote Control Valves
Hydraulic Manifold Block/Diverter Valve
Single Spool Remote Control System
—-Oil Flow
Neutral Position
Raising Position
Lowering Position
—-Front (Double Spool) Remote Valve
—-Double Spool Remote Control System
—-Oil Flow
Bucket And Lift Control – Neutral Position
Bucket Cylinder – Dumping
Bucket Cylinder – Regen
Bucket Cylinder – Rollback
Lift Cylinder – Raising
Lift Cylinder – Lowering
Lift Cylinder – Float Position
—Overhaul – Remote Valves
—-Single Spool Valve (Rear Remote Valve)
Removal
Disassembly
Inspection
Assembly
—-Double Spool Remote Valve
—-Double Spool Remote Valve (Front Remote Valve)
Removal
Disassembly
Lift Spool
Bucket Regen Spool
Inspection
Assembly
Lift Spool
Bucket Regen Spool
—-Front Remote Valve Linkage
Removal
Installation
–
Troubleshooting
—Pressure Testing
Main System Relief Valve
–
Specifications
Metric Bolt Torque Specifications
Special Tools - Power Steering System
— Power Steering System
—Description And Operation
Power Steering System
—-Power Steering Control Valve
Spool And Sleeve
Drive Shaft
Gerotor Pump
Check Valve
Relief Valve
—-Power Steering Pump
—-Power Steering Cylinder
—-Power Steering Operation
Fluid Flow – Neutral Position
Fluid Flow – Left Turn
Fluid Flow – Right Turn
—-Power Steering Manual Operation
—Overhaul
—-Power Steering System
Removal
Steering Control Valve
Disassembly
Inspection
Assembly
—-Steering Cylinder
Removal
Disassembly
Inspection
Assembly
—-Oil Pump
Disassembly
Inspection
Assembly
—-Power Steering System
Installation
—-Power Steering Tubes
—Troubleshooting
—Pressure Testing
—-Pump, Steering Valve, and Relief Valve
Test Results
—-Steering Cylinder
Test Results 3
–
Specifications
Special Tools
Metric Bolt Torque Specifications - Wheels And Tires
— Wheels And Tires
—Specifications
Wheels And Tires – Tread Setting
Weights
Wheels And Tires – Weight Limitation
Liquid Ballast
Tire Inflation Vs Permissible Load
Wheels And Tires Lug Bolt Torque
Front And Rear Wheel Hub Bolt Torque Sequence - Electrical System
— Electrical System
—Component Location And Function – Description And Operation
Wiring Harnesses
Ground Locations
—-Battery
Removal
Installation
—-Fuse Block
—-Main Fuse
Replacement
—Electrical System Components – Description And Testing
—-Key Start Switch
Replacement
Installation
Testing
—-Light Switch (Combination Switch)
Removal
Testing
Installation
—-Hazzard/Turn Signal Combination Switch
Removal
Testing
Installation
—-9 X 3 Transmission Main (Speed) Gears, Safety Switch
Adjustment
Testing
—-Transmission Range Gear Safety Switch (Hst Models), Rear Pto Safety Switch And Mid Pto Safety Switch
Range Switch Adjustment – Hst Transmission
Testing
—-Seat Safety Switch
Removal
Testing
Installation
—-Parking Brake Switch
Testing
—-Cruise Control Brake Release Switch (Hst Only)
Testing
—-Relays
Testing
—-Flasher Controller
Removal
Testing
–
Safety Controller
—-Glow Plug Indicator Light
Testing
—-Fuel Shut Off Solenoid (Safe Operation)
Testing
—-Safety Start Circuit (Safety Controller)
Testing
—-Parking Brake Indicator Light (Safety Controller)
Testing
—-Rear Pto Indicator Light (Safety Controller)
Testing
—-Diodes
Testing
—-Cruise Control Magnet (Hst Models)
Testing
—-Hst Speed Control (Cruise Control) Switch (Hst Models Only)
Testing
—-Glow Plugs
Testing
–
Engine Sensors
—Fuel Shutoff Solenoid
Testing
–
Lighting
Flasher Warning Light
Rear Work Light (Optional)
Electrical Wiring Diagram
Starting Circuit (Operator Present) Hst Transmission
Starting Circuit (Operator Present) Gear Transmission
Starting Circuit (No Operator Present) Hst Transmission
Starting Circuit (No Operator Present) Gear Transmission
Safe Operation Circuit (Operator Present) All Transmissions
Safe Operation Circuit (Operator Not Present) Hst Transmission Pto(S) Not Engaged
Not Engaged
Safe Operation Circuit (Operator Not Present) HST Transmission Rear PTO Engaged
Safe Operation Circuit (Operator Not Present) Gear Transmission Rear PTO Engaged
Glow Plug Circuit
HST Cruise Control Circuit
Front Work Lights Circuit
Front Road Lights Circuit
Hazard Flasher Circuit
Left Turn Signal Circuit
Right Turn Signal Circuit
Engine Temperature Gauge Circuit
Engine Oil Pressure Indicator Light Circuit
Fuel Level Sender Circuit
Parking Brake Indicator Light Circuit
Rear PTO Indicator Light Circuit
Tachometer Circuit
Charging Circuit
—-Component Operation and Servicing
Instrument Panel
Removal
—-Component Testing and Replacement
Fuel Gauge Testing
Testing
Replacement
—-Temperature Gauge
Testing
Replacement
—-Tachometer
Testing
Replacement
—-Instrument Panel, Indicator And Illumination Lights
Bulb Replacement
–
Description Of Operation – Starting System
—Overhaul – Starter Motor
—-Starter Motor
Removal
Disassembly
Inspection And Repair
Electrical Tests
Assembly
—-Description Of Operation — Charging System
Stator
Rotor
Rectifier
End Frame
Ic Regulator
Improvement Of Charging System
Detention Function
Function
—Overhaul – Charging System
—-Pulley
Removal
—-Rear End Cover
Removal
—-Brush Holder
Removal
—-Ic Regulator
Removal
—-Regulator
Removal
—-Bushing
Removal
—-Rear End Frame
Removal
—-Rotor
Removal
—-Retainer Plate
Removal
—-Bearing (Drive End Side)
Removal
—-Bearing (Slip Ring Side)
Removal
–Component Inspection And Repair
Stator
Rotor
Rectifier
—-Diode
Testing
–
Brush Hold And Brushes
Bearings
Fan
Drive Pulley
Alternator Housing
—-Alternator
Assembly
—-Charging System
Performance Tests
—-Ic Regulator
Inspection
—-Voltage Measurement On The Vehicle
—Troubleshooting
Failure In Charging System
Preliminary Checks
Care In Handling Charging System
Specifications - Platform
— Platform
—Description Of Operation – Platform
—-Hood
Removal
Installation
—-Steering Wheel
Removal
Installation
—-Instrument Panel And Console
Removal
Installation
—-Rear Panels
Removal
Installation
—-Fuel Tank
Removal
Installation
—-Seat And Seat Suspension
Removal And Disassembly
Installation
—-Roll Over Protection System (Rops)
Removal
Installation
—-Fenders
Removal
Installation
—-Side Steps
Removal
Installation
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