New Holland TZ21D, TZ24D Compact Tractor Service Manual
623 pages · Publication 87541685
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- Models
- TZ21D, TZ24D
- Manual type
- Service Manual
- Pages
- 623
- Publication
- 87541685
- Condition
- Brand new
What's inside
From the manual's own table of contents: 91 sections, 430 entries. See sample pages (PDF, 616 KB)
Precautionary Statements
Personal Safety
Machine Safety
Information
Safety9 topics
- The Tractor
- Servicing the Tractor
- Precautions Before Servicing
- Basic Understanding Servicing
- Operating the Tractor
- Driving the Tractor
- Operating the PTO
- Diesel Fuel
- Safety Frame (ROPS)
Safety Decals1 topic
- Instruction Decals
Ecology and the Environment1 topic
- Helpful Hints
Universal Symbols
General Information1 topic
- Please Read Carefully
Minimum Hardware Tightening Torques
Metric Bolt Torque Specifications
Lubrication and Maintenance3 topics
- General Information
- Grease Fittings
- Chains
Lubrication and Maintenance Chart2 topics
- Lubrication Fittings
- Fuel Usage Safety
Specifications16 topics
- Engine
- Capacities
- Cooling System
- Electrical System
- Fuel System
- Brakes
- Steering
- Power Take-Off (PTO)
- Hydraulic Lift Section
- Transmission Speeds
- Cast Iron Weights
- Drawbars
- 3-Point Hitch
- Tires
- Wheel Bolt Torques
- ROPS Attaching Bolt Torques
General Dimensions3 topics
- Wheel Tread Settings
- Liquid Ballast (optional)
- Tire Pressure
Specification
External Views
Engine Sectional Views
Power Flow2 topics
- Four Wheel Drive Power Flow
- PTO Power Flow
Oil Flow3 topics
- Oil Flow Schematic
- Power Steering
- Hydraulic Power Lift System
Mower Lift Linkage1 topic
- Operation
Wiring
Engine Removal
Transmission Removal
Show all 91 sections
Front Axle & the other removal
Installation11 topics
- High pressure oil pipe
- O--ring for HST
- Front axle assembly
- Coupling and joint assembly
- Front wheel drive shaft and joint assembly
- ROPS frame
- Foot brake and hand brake adjustment
- Brake switch
- HST neutral position adjustment
- Mower linkage
- PTO clutch safety switch
Trial Running
10 000 Specifications
Torque Specifications
Special Tools
General Information -- Description of Operation3 topics
- Identification Chart
- Cylinder Head and Valve Train Components
- Cylinder Block Assembly
Troubleshooting
Overhaul24 topics
- Engine Access
- Disassembly
- Fuel Injector and Glow Plug
- Removal
- Hydraulic Pump
- Fan, Water Pump and External Oil Tube
- Fuel Shutoff Solenoid
- Oil Pressure Switch
- Temperature Sending Switch and Alternator
- Throttle Cable
- Disconnection
- Support Frame
- Valve Cover
- Rocker Shaft and Push Rod
- Cylinder Head
- Valve Tappet
- Engine Timing Gear Cover, Timing Gears and Camshaft
- Timing Gears and Camshaft
- Oil Sump
- Oil Suction Pipe and Strainer
- Connecting Rods, Bearings and Piston
- Flywheel
- Backplate and Oil Seal
- Crankshaft and Main Bearings
18 110 Cylinder Head15 topics
- Inspection and Repair
- Valve Seats
- Valves
- Valve Guides
- Valve Springs
- Rocker Arms
- Inspection and Replacement
- Push Rods
- Assembly
- Cylinder Block
- Disassembly and Inspection
- Piston Rings
- Connecting Rods
- Connecting Rod Bearing Oil Clearance Check
- Pistons, Rings and Connecting Rod
10 103 Main Bearing and Thrust Bearing3 topics
- Removal and Inspection
- Crankshaft
- Inspection
Crankshaft Journal Wear Limit and Bearing Usage24 topics
- Crankshaft Front Main Bearing (Bushing)
- Replacement
- Crankshaft Main Bearing
- Port Block
- Installation
- Timing Gear
- Camshaft
- Timing Gear Housing
- Front Oil Seal and Steering Pump Seal
- Crankshaft and Bearing Holder
- Rear Oil Seal and Backplate
- Piston and Connecting Rod
- Oil Suction Pipe and Suction Strainer
- Timing Gear Cover, Timing Gears and Camshaft
- Head Gasket Selection
- Valve Clearance Adjustment
- Drive Train
- Tachometer and Throttle Cables
- Alternator and Temperature Sending Switch
- Glow Plug and Connector
- Fuel Injection Pump
- Fuel Injector
- Fuel Line
- Exhaust Manifold, Air Cleaner and Radiator
10 304 Engine Lubrication System -- Description of Operation
10 206 Engine Oil Filter6 topics
- Construction and Function
- Maintenance
- Installation and Adjustment
- Engine Oil Pressure Check
- Oil Pressure Relief Valve
- Oil Consumption
10 400 Cooling System -- Description of Operation6 topics
- Coolant
- Thermostat
- Water Pump
- Cooling Fan
- Radiator
- Radiator Cap
10 406 Cooling System Overhaul
10 402 Water Pump and Thermostat
Testing1 topic
- Compression Test and Tools
Fuel System -- Description of Operation
10 242 Injection Pump -- Description of Operation
10 236 Pumping Elements
10 214 Delivery Valves
Troubleshooting -- General
Troubleshooting -- Fuel Injectors
Troubleshooting -- Governor
Troubleshooting -- Engine Breather Valve
10 214 Injection Pump1 topic
- Repair
10 230 Timing and Governor Adjustments5 topics
- Using Original Pump and Drive Components
- New Pump or Drive Component
- Spill-Timing Procedure
- Bleeding the Fuel System
- Full Screw High Idle Adjustment
10 230 Governor -- Description of Operation2 topics
- Governor
- Adjustments
10 218 Injectors -- Description of Operation3 topics
- Injector
- Assembly and Adjustment
- Engine Breather Valve
Front Wheel Drive Axle -- Description of Operation16 topics
- Manual
- Auto
- Auto Position (Engaged)
- Auto Position (Disengaged)
- Full Time FWD (Locked Down)
- Front Axle
- Front Axle Removal
- Front Axle Disassembly
- Final Drive Case Cover
- Steering Cylinder
- Final Drive Case
- Idler Case
- Idler Case Disassembly
- Differential Assembly
- Drive Pinion
- Differential Assembly Overhaul
Bolt Torque Specifications
Special Tool
Description of Operation
27 110 Differential
27 110 Differential Lock
27 106 Differential2 topics
- Drive Pinion Removal
- Differential
Ring Gear and Pinion Gear Pattern Specification and Adjustment
Rear Axle Overhaul11 topics
- Variable Displacement Pump
- Fixed Displacement Motor
- Hydraulic Fluid Flow
- Neutral Position
- Forward Position
- Reverse Position
- Range Gear
- Power Flow
- High Range
- Low Range
- Internal Parts -- Troubleshooting
Pressure Testing24 topics
- High Pressure Relief Valves
- Forward Testing
- Reverse Testing
- Low (Charge) Pressure Relief Valve
- Transmission/Differential
- Separating
- Attaching
- HST Unit
- HST Adjustment
- Neutral Adjustment
- Pedal Adjustment
- Transmission Range Gears
- HST Electric Cruise Control
- Cruise Control Switch
- Description and Location
- Testing
- Cruise Magnet
- Cruise Relays
- Removal (all)
- Testing Cruise Latch and Instrument Panel Relays (normally open)
- Testing Cruise Brake Relay (normally closed)
- Relay Installation (all)
- Cruise Diode
- Cruise Control Circuit
Troubleshooting -- HST Cruise Control Circuit11 topics
- PTO Off
- Rear and Mid PTO On
- Rear PTO On
- Mid PTO On
- PTO Clutch
- PTO Clutch Shaft
- PTO Change Lever
- Rear Case Cover
- PTO Shift Rod and Input Shaft
- Mid PTO Shaft and Gears
- Clutch & Front Cover
Adjustment
33 120 Description of Operation
33 110 Parking Brake
Adjustments1 topic
- Brake
33 110 Brake Switch
Description and Operation -- Hydraulic System Circuits7 topics
- Flow Priority Valve
- Relief Valve
- Check Valves
- Safety Valve
- Detent Balls
- Lifting Position
- Lowering Position
Drop Rate Control Valve
Lift Cylinder Removal
Lift Cylinder Disassembly
Control Valve Assembly (HPL)2 topics
- Priority Valve
- Detent Ball
Lift Check Valve17 topics
- Power Steering Control Valve
- Spool and Sleeve
- Drive Shaft
- Gerotor Pump
- Check Valve
- Power Steering Cylinder
- Power Steering Operation
- Fluid Flow -- Neutral Position
- Fluid Flow -- Left Turn
- Fluid Flow -- Right Turn
- Manual Operation
- Power Steering Tubes
- Troubleshooting
- Pump, Steering Valve and Relief Valve
- Test Results
- Steering Control Relief Valve
- Adjustment
Priority Flow Valve
Wheel Tread Settings8 topics
- Front Wheel Settings
- Rear Wheel Settings
- Tractor Weighting
- Weighting for Stability
- Weighting Limitations
- Cast Iron Weights (optional)
- Front End Weights
- Rear Wheel Weights
Introduction
Component Location and Function1 topic
- Component Location
Description or Testing58 topics
- Battery
- Slow Blow Fuse
- Key Switch
- Safety Start Switches
- Range Gear Safety Start Switch
- The PTO Clutch Safety Start Switch
- Fuse Block
- Description
- Relay
- Safety Start Relay
- Brake Lamp Relay
- Low--beam Lamp Relay
- 25A Fuse Relay
- Relay Operation Testing
- Fuel Level Shut Off Solenoid
- Fuel Level Sending Unit
- Engine Glow Plugs
- Diode For Charge Lamp
- Engine Coolant Temperature Sending Unit
- Engine Oil Pressure Switch
- Instrument Panel -- Component Operation and Servcing
- Light Replacement
- Lighting
- Fuel Gauge Testing
- Temperature Gauge Testing
- Headlight Switch
- Headlight
- Glow Lamp Timer
- Glow Plug Indicator Light Timer Operation
- Parking Brake Switch
- Parking Brake Light Switch
- Troubleshooting -- Continuity Test
- Combination Switch -- Description
- Hazard Light Switch -- Description
- Flasher Light Switch -- Description
- Horn Switch -- Description
- Combination Switch -- Removal
- Hazard Light Switch -- Testing
- Brake Lamp Switch
- Flasher and Hazard Relay
- Flasher Light Relay -- Testing
- Horn
- Trailer Socket
- High--beam relay
- Fuel Pump
- Seat Safety Switch
- Operator is seated
- Operator is unseated
- Seat Safety Switch Timer
- Safe Operation Circuit (Operator Present)
- Lighting Circuits (Headlights)
- Flasher and Hazard Lighting Circuit
- Horn Circuit
- Engine Coolant Temperature Circuit
- Fuel Level Circuit
- Engine Oil Pressure Circuit
- Charging Circuit
- Glow Plug Circuit
Instrument Panel3 topics
- Alternator
- Specifications and construction
- Cautions for handling
Disassembly10 topics
- Pulley
- Rear End Cover
- Brush Holder
- IC Regulator
- Rectifier
- Bushing
- Rotor
- Retainer Plate
- Bearing (Drive End Side)
- Bearing (Slip Ring Side)
Inspection and Repair for each Component3 topics
- Ball Bearing
- Stater
- Brush
Assembly
Blade Specifications4 topics
- Lubrication
- Gearbox
- Description of Operation
- Cutting Height
Removal of the Mower Deck
Removal of 90 _ Gearbox, Blade Spindles and Pulley Holders
90 _ Gearbox1 topic
- Components
Initial Shimming Procedure
Center Pulley Holder14 topics
- RH and LH Pulley Holders
- Installation of Gearbox, Blade Spindles and Pulley Holders
- Installation of Mower Deck
- Hood
- Main Cowling
- Dash Panel
- Steering Column
- Engine Removal and Installation
- Seat
- Rollover Protection System (ROPS)
- Fender Assembly
- Foot Platform
- Fuel Tank
- SECTION 00 -- GENERAL INFORMATION -- CHAPTER 1
Inside this manual
Real pages from this service manual (623 pages). Open the sample pages (PDF, 615 KB)
- Specifications, page 54: SECTION 00 -- GENERAL INFORMATION -- CHAPTER 1
- Troubleshooting, page 468: SECTION 41 -- POWER STEERING -- CHAPTER 1
- Diagram, page 531: SECTION 55 -- ELECTRICAL SYSTEM -- CHAPTER 2
- Color page, page 31: SECTION 00 -- GENERAL INFORMATION -- CHAPTER 1
This is a service manual
Here's how it compares to the other manual types.
This manual
Service manual
Factory repair procedures and technical information such as specifications, troubleshooting, and wiring and hydraulic diagrams, for the models and systems the manual covers. See What's inside for its topics.
Operator's manual
Safe operation, controls, maintenance schedules, lubrication points, inspections, and basic checks. Repair procedures are in the service manual.
Parts manual
Illustrated diagrams with factory part numbers for identifying components and ordering parts. Repair procedures are in the service manual.
Engine service manuals are sometimes sold separately, since certain machine models were offered with more than one engine option.
What it's used for
Factory manual for in-house farm and construction shop use. Straightforward, complete, and easy to follow. It contains the OEM information dealership service departments and parts counters use to diagnose problems, identify components, and perform maintenance or repairs correctly.
Service shops and owner/operators who repair their own equipment
Identifying correct parts and seeing how assemblies come apart and go back together
Keeping equipment running with less downtime
Factory manual, 623 pages
Quantity one is the manual described above.
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Ships in 1 business day.
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Binder not included
Manuals over about 300 pages may need a standard 3-ring binder, which you can buy locally to keep the pages organized for shop use.
Questions about model, serial number, engine coverage or contents? Contact us before purchasing and we'll help confirm it's the right manual. Please verify the manual type, machine model, serial number range and engine coverage before purchasing: manuals ordered in error carry a 20% restocking fee (return policy).