New Holland TZ18DA, TZ22DA, TZ24DA, TZ25DA Tractor Service Manual
747 pages · Publication 87350100
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What's inside
From the manual's own table of contents: 97 sections, 493 entries. See sample pages (PDF, 647 KB)
SECTION 00 - GENERAL INFORMATION
SECTION 10 - ENGINE SYSTEMS
SECTION 25 - FWD
SECTION 27 - DIFFERENTIAL AND REAR AXLES
SECTION 29 - HYDROSTATIC TRANSMISSION
SECTION 31 - PTO
SECTION 33 - BRAKES
SECTION 35 - HYDRAULIC SYSTEM
SECTION 41 - POWER STEERING
SECTION 44 - WHEELS
SECTION 55 - ELECTRICAL SYSTEM
SECTION 58 - 54CMS--60CMS MID MOUNT MOWER
SECTION 90 - PLATFORM
Precautionary Statements
Personal Safety
Machine Safety
Information
Safety7 topics
- The Tractor
- Servicing the Tractor
- 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
Show all 97 sections
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
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 Operation23 topics
- Manual
- Auto
- Auto Position (Engaged)
- Auto Position (Disengaged)
- Full Time FWD (Locked Down)
- Power Flow
- Front Axle
- FWD Axle
- Final Drive Case Cover
- Steering Cylinder
- Final Drive Case
- Idler Case
- Differential
- Drive Pinion
- Backlash Adjustment
- Axle Seal Installation
- FWD Box
- Removal (Manual and Auto)
- Manual FWD Box
- Auto FWD Box
- Two Way Clutch (Sensitrack t )
- Front to Rear Axle Ratio
- Front Wheel Drive
Bolt Torque Specifications
Special Tool
Description of Operation
27 110 Differential
27 110 Differential Lock
27 106 Differential
Ring Gear and Pinion Gear Pattern Specification and Adjustment11 topics
- Variable Displacement Pump
- Operation
- Fixed Displacement Motor
- Hydraulic Fluid Flow
- Neutral Position
- Forward Position
- Reverse Position
- Range Gear
- High Range
- Low Range
- Internal Parts -- Troubleshooting
Pressure Testing8 topics
- High Pressure Relief Valves
- Forward Testing
- Reverse Testing
- Low (Charge) Pressure Relief Valve
- Transmission/Differential
- Separating
- Attaching
- HST Unit
Identification of Thrust Bearing Assemblies17 topics
- HST Adjustment
- Neutral Adjustment
- Pedal Adjustment
- Transmission Range Gears
- HST Cruise Control (optional)
- 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
- and TZ24DA
- Cruise Control Circuit -- TZ18DA Prior to PIN #HB20001 and TZ24DA
Troubleshooting -- HST Cruise Control Circuit1 topic
- TZ22DA, TZ25DA
Power Flow10 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
Adjustment
33 120 Description of Operation
33 110 Parking Brake
Adjustments1 topic
- Brake
Description and Operation -- Hydraulic System Circuits11 topics
- Oil Filter
- Control Valve Assembly (HPL)
- Flow Priority Valve
- Relief Valve
- Check Valves
- Safety Valve
- Detent Balls
- Oil Flow
- Lifting Position
- Lowering Position
- Drop Rate Control Valve
Overhaul -- Lift Cylinder7 topics
- Lift Cylinder
- Control Valve
- Lift Check Valve
- Spool
- Lift Cover
- Hydraulic System Circuit
- Feedback Plate Adjustment
Description and Operation -- Hydraulic Pump and Filter
Overhaul -- Hydraulic Pump
Description and Operation -- Remote Control Valves13 topics
- Single-spool Control Valve
- Double-spool Control Valve
- Single-spool Remote Control Valve -- Oil Flow
- Raising Position
- Two Spool Remote Control Valve -- Oil Flow
- Bucket and Lift Control - Neutral Position
- Bucket Cylinder - Dumping
- Bucket Cylinder - Rollback
- Lift Cylinder - Raising
- Lift Cylinder - Lowering
- Lift Cylinder - Float Position
- Hydraulic Fluid Flow with Remote Valve
- Hydraulic Fluid Flow without Remote Valve
Troubleshooting -- Front and Rear Remote Valves
Overhaul -- Remote Control Valve3 topics
- Single-spool Valve (Rear Remote Valve)
- Two Spool Remote Valve (Front Remote Valve)
- Front Remote Valve
Description and Operation -- Mower Lift Linkage15 topics
- Mower Deck Height
- Main System Relief Valve
- Pump Efficiency
- 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
- Steering Control Valve
Control Valve Assembly (HPL)5 topics
- Power Steering Tubes
- 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
Electrical Component Location and Function4 topics
- TZ18DA Prior to Pin #HB20001 and TZ24DA
- TZ18DA On or Above Pin #HB20001 and TZ22DA/TZ25DA
- Component Locations and Functions
- Ground Locations
Description of Operation -- Electrical System Components15 topics
- Battery
- Checking the Battery Electrolyte Level
- Main Fuse (40 amp)
- Fuse Block (TZ18DA, Prior to Pin # HB20001 and TZ24DA)
- Description
- Fuse Block (TZ18DA, On or Above Pin # HB20001 and TZ22DA, TZ25DA)
- Key Switch
- Troubleshooting - Continuity Test
- Troubleshooting - Connector Wiring
- Light Switch
- Headlights
- Taillights
- Hazard Flasher / Turn Signal / Horn Switch
- Hazard/Turn Signal Lights
- Horn
Safety Switches23 topics
- Transmission Range Safety Switch
- Seat Safety Switch
- Switch Plunger Extended (Out)
- Switch Plunger Retracted (In)
- Parking Brake Safety Switch
- PTO Position Safety Switch
- PTO Clutch Safety Switch
- Seat Safety Switch Timer
- Accessory Socket
- Relays
- Relay Identification
- Testing (Safety Start, PTO, Brake, Fuel Shutoff Solenoid)
- PTO Indicator Light Relay
- Diodes
- Safety Start/Charging System Diode Pack
- Safe Operation Diode
- Engine Glow Plug Indicator Light Timer
- Engine Glow Plugs
- Hazard Flasher/Turn Signal Relay
- Relay Terminal Identification
- Fuel Pump
- Fuel Level Sender
- Coolant Temperature Sending Unit
Instrument Panel Components17 topics
- Safety Controller -- TZ18DA, on or above Pin # HB20001, TZ22DA and TZ25DA
- Controller Terminal Identification (Viewed from Bottom of Controller)
- Testing Safety Start Circuit
- Operator Not In Seat
- Operator in Seat
- Testing Glow Plug Indicator Light Circuit
- Key Switch in “HEAT” Position
- Testing PTO Indicator Light Circuit
- Testing the Fuel Shutoff Solenoid Circuit
- Testing Alarm Circuit
- Flasher Controller -- TZ18DA, on or above Pin # HB20001, TZ22DA, and TZ25DA
- Test Procedures
- Connection for All Tests
- Hazard Lights Test
- Left Turn Signal Test
- Right Turn Signal Test
- Safety Alarm (Buzzer)
Electrical Circuits17 topics
- Complete Circuit Diagram -- TZ18DA -- Prior To PIN # HB20001, TZ24DA
- Glow Plug Circuit -- TZ18DA -- Prior to PIN # HB20001, TZ24DA
- Glow Plug Circuit -- TZ18DA -- PIN # HB20001 and Above, TZ22DA, TZ25DA
- Lighting Circuits (Headlights) (All Tractors)
- Lighting Circuits (Worklights) (All Tractors)
- Hazard Flasher Circuits (All Tractors)
- Left Turn Signal Circuit (All Tractors)
- Right Turn Signal Circuit (All Tractors)
- PTO Indicator Light Circuit -- TZ18DA -- Prior to PIN # HB20001, TZ24DA
- Engine Coolant Temperature Circuit (All Tractors)
- Engine Oil Pressure Circuit (All Tractors)
- Fuel Level Circuit (All Tractors)
- Auxiliary Electrical Power Socket (All Tractors)
- Horn Circuit (All Tractors)
- Charging Circuit -- TZ18DA -- Prior to PIN # HB20001, TZ24DA
- Charging Circuit -- TZ18DA -- PIN # HB20001 and Above, TZ22DA, TZ25DA
- Safety Alarm Circuit -- TZ18DA -- PIN # HB20001 and Above, TZ22DA, TZ25DA
Description of Operation -- Instrument Panel5 topics
- Instrument Panel
- Instrument Panel Light Replacement
- Instrument Panel Lighting
- Fuel Gauge Testing
- Temperature Gauge Testing
Charging System -- Construction of Components29 topics
- Alternator
- Stator
- Rotor
- Rectifier
- End Frame
- IC Regulator
- Improvement of Charging System
- Detection Function
- Function
- Diode
- Brush Holder and Brushes
- Bearings
- Drive Pulley
- Alternator Housing
- Alternator with IC Regulator
- Regulator Voltage Check
- No Load Characteristics
- Output Characteristics
- Diagnosis on Alternator and Regulator
- Caution on Inspection
- Unit Inspection of IC Regulator
- M-Type IC Regulator (12V Specification)
- Measurement on the Vehicle
- Regulated Voltage Check (IC Regulator)
- Check for Alternator Output Current
- Failure in Charging System
- Preliminary Checks
- Troubleshooting When Charge Lamp is Turned On While the Engine is Running
- Care In Handling Charging Systems
Specifications -- Alternator
Starting System
Overhaul --Starter Motor1 topic
- Starter Motor
Electrical Tests6 topics
- Armature Coil -- Continuity Test
- Grounded Armature Coil Test
- Brush Holder Ground Test
- Field Coil Continuity Test
- Field Coil Ground Test
- Solenoid Coil
Specifications -- Starter Motor
Mower Deck -- Overhaul8 topics
- 90 _ Gearbox, Blade Spindles and Pulley Holders
- 90 _ Gearbox Components
- 90 _ Gearbox
- Center Pulley Holder
- RH and LH Pulley Holders
- Mower Deck
- Lubrication
- Gearbox
Mower Lift Linkage -- Description of Operation
Mower Lift Linkage11 topics
- Cutting Height
- Hood
- Main Cowling
- Dash Panel
- Steering Column
- Engine Removal and Installation
- Seat
- Rollover Protection System (ROPS)
- Fender Assembly
- Foot Platform
- Fuel Tank
Inside this manual
Real pages from this service manual (747 pages). Open the sample pages (PDF, 647 KB)
- Specifications, page 65: SECTION 00 -- GENERAL INFORMATION -- CHAPTER 1
- Diagram, page 593: SECTION 55 -- ELECTRICAL SYSTEM -- CHAPTER 2
- Troubleshooting, page 637: SECTION 55 -- ELECTRICAL SYSTEM -- CHAPTER 2
- Color page, page 44: SECTION 00 -- GENERAL INFORMATION -- CHAPTER 1
Other manuals for this machine
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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, 747 pages
Quantity one is the manual described above.
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