Need the factory manual for your New Holland TZ18DA, TZ22DA, TZ24DA, or TZ25DA? This 746-page Repair Manual (OEM #87350104) covers every system on these compact tractors, from the HST unit down to the mower deck gearbox. Open it up and you get full wiring diagrams with pinout charts for both TZ18DA build breaks, hydraulic schematics for the lift circuit and remote valves, and a deep troubleshooting section covering the HST, PTO, and electrical safety switches. You also get complete overhaul procedures for the engine, differential, and brakes, plus torque tables for every bolted assembly. Set the main system relief valve to 128 bar (1850 psi) and change that oil filter every 300 hours, exact numbers, not shop-manual guesswork. Your PTO won't engage or your HST won't hold neutral? Stop swapping parts and check the actual spec first. Bookmarked and searchable, so you can jump straight to the wiring section from your phone in the shop.
Complete the set for your TZ18DA, TZ22DA, TZ24DA…
What's Inside This New Holland TZ18DA, TZ22DA, TZ24DA, TZ25DA Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 37-70 | Precautionary Statements (Personal Safety, Machine Safety, Information) |
| Engine Systems | 71-198 | Torque Specifications, Engine Lubrication System -- Description of Operation, Engine Oil Filter (Construction and Function, Maintenance) |
| FWD | 199-228 | Front Wheel Drive Axle -- Description of Operation (FWD, Manual, Auto, Auto Position, Full Time FWD, Power Flow) |
| Differential and Rear Axles | 229-250 | Bolt Torque Specifications, Special Tool, Differential, Differential Lock, Rear Axle, Operation |
| Hydrostatic Transmission | 251-332 | HST Unit (Removal, Disassembly, Inspection, Identification of Thrust Bearing Assemblies, Assembly, Installation, HST Adjustment, Neutral Adjustment, Pedal Adjustment, Cooling Fan, Transmission Range Gears) |
| PTO | 333-370 | Special Tools, Operation (Power Flow, PTO Off, Rear and Mid PTO on, Rear PTO on, Mid PTO on), Troubleshooting |
| Brakes | 371-386 | Adjustments (Brake, Parking Brake), Operation (Brakes, Troubleshooting, Overhaul (Brakes, Removal, Disassembly, Inspection, Assembly, Installation) |
| Hydraulic System | 387-458 | Description and Operation -- Hydraulic System Circuits (Oil Filter, Control Valve Assembly, Flow Priority Valve, Relief Valve, Check Valves, Safety Valve, Detent Balls, Oil Flow, Neutral Position, Lifting Position, Lowering Position, Drop Rate Control Valve) |
| Power Steering | 459-496 | Pressure Testing (Pump, Steering Valve and Relief Valve, Test Results, Steering Cylinder, Steering Control Relief Valve, Adjustment, Priority Flow Valve), Special Tools |
| Wheels | 497-502 | Wheel Tread Settings (Front Wheel Settings, Rear Wheel Settings), Tractor Weighting, Weighting for Stability, Weighting Limitations |
| Electrical System | 503-684 | Electrical Component Location and Function (TZ18DA Prior to Pin #HB20001 and TZ24DA, TZ18DA on or Above Pin #HB20001 and TZ22DA/TZ25DA, Component Locations and Functions, Ground Locations) |
| Cms -- 60Cms Mid Mount Mower | 685-728 | Mower Deck - Overhaul (Removal, 90° Gearbox, Blade Spindles and Pulley Holders, 90° Gearbox Components, Disassembly, Inspection, Assembly, Center Pulley Holder, RH and LH Pulley Holders, Installation, Lubrication, Gearbox, Mower Lift Linkage - Description of Operation, Mower Lift Linkage, Adjustment, Cutting Height) |
| Platform | 729-746 | Hood (Removal, Installation, Main Cowling, Dash Panel, Steering Column, Engine Removal and Installation, Seat, Rollover Protection System, Fender Assembly, Foot Platform, Fuel Tank) |
Every system also includes specifications.
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Oil Pressure Switch Removal | 31 | p. 4 |
| Hydraulic Pump Removal | 30 | p. 4 |
| System Relief Valve Setting | 128 bar (1850 psi) | p. 390 |
| Oil filter replacement interval | 300 hours of operation | p. 395 |
| Engine Oil Capacity (With Filter) | 3.3 liters | p. 62 |
| Cooling System Capacity | 3.5 liters | p. 62 |
| Fuel Tank Capacity | 29.5 liters | p. 62 |
| Rear Axle & Transmission Capacity | 13 liters | p. 62 |
| Front Axle Differential/Final Reduction Gear Case Capacity | 2.0 liters | p. 62 |
| Engine Valve Clearance (Cold) - Intake | 0.20 mm (0.008") | p. 62 |
| Main System Protection Fuse | 40A Slow-Blow Fuse | p. 621 |
| Battery Type | 51BCI/450 CCA | p. 63 |
