Part of the JCB Repair Manuals.
Every overhaul on your power plant begins with this 784-page JCB T4F 444 Elec Engine (4 Cyl), T4F 448 Elec Engine (4 Cyl) Service Manual PDF (OEM #9806/6400-4). Inside, you get complete wiring diagrams for the engine harness, fluid flow schematics, and extensive electronic diagnostic fault codes. Open to any section and find step-by-step rebuild procedures for the fuel injection pump and selective catalytic reduction system. Lock down the rocker shaft fixing bolts to exactly 24 Nm, and verify the fuel filter element is tightened to 35 Nm before priming the system. Parts cannons are expensive. Download the file, open the bookmarks on your tablet, and fix the engine right the first time.
Complete the set for your JCB T4F 444 Elec Engine (4 Cyl), T4F 448 Elec Engine (4 Cyl)
- Operator Manual: JCB T4F 444, 448 Elec Engine (4 Cyl) Operator Manual
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Machine | 5-34 | Acronyms Glossary, Introduction (General, Product Compliance, Intended Use) |
| Body and Framework | 35-40 | Identification Label, Figure 8. B, Table 1. Example of the Engine Identification Number, Table 2., Table 3. Explanation of the Engine Identification Number |
| Operator Station | 41-46 | Safety Label/Chart, General (Introduction) |
| Engine | 47-356 | Acronyms Glossary, Crankcase (General), Cylinder Head (General), Bedplate (General), Crankshaft (General, Main Bearing, Front Oil Seal, Rear Oil Seal, Pulley), Camshaft (General) |
| Fuel and Exhaust System | 357-524 | Acronyms Glossary, Tank (General), Filter (General, Element, Pre-Filter Element), Water Separator (General, Water in Fuel Sensor) |
| Cooling System | 525-562 | Acronyms Glossary, Cooling Pack (General, Radiator), Expansion Tank (General), Pump (General), Thermostat (General), Inlet (General), Hose (General) |
| Electrical System | 563-710 | Acronyms Glossary, Harness (General, Engine), Control Module (General, Engine, Selective Catalytic Reduction, Nitrogen Oxide Sensor) |
| Fasteners and Fixings | 711-726 | Screws (General), Bolts (General) |
| Consumable Products | 727-752 | Acronyms Glossary, Oil (General, Engine, Refrigerant), Fluids (General, Antifreeze, Diesel Exhaust Fluid), Fuel (General) |
| After Sales | 753-784 | Acronyms Glossary, Maintenance Schedules (General, Maintenance Intervals, Pre-Start Cold Checks, Service Points and Fluid Levels) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Rocker shaft fixing bolts torque | 24 Nm | p. 207 |
| Rocker shaft - oil feed pedestal fixing bolt torque | 24 Nm | p. 207 |
| Fuel filter strap retaining screw torque | 24 N·m | p. 382 |
| Fuel filter element torque | 35 N·m | p. 383 |
| Injector clamp bolt torque | 28 Nm | p. 412 |
| Fuel injector replacement | must be replaced | p. 410 |
| ECM fixing bolts torque | 24 Nm | p. 640 |
| ECM replacement | must be replaced | p. 640 |
| Starter motor securing bolts torque | 47 ± 4 Nm | p. 285 |
| Starter motor electrical lead (Terminal 30) torque | 15 ± 3 Nm | p. 285 |
| Air filter element replacement | must only be renewed | p. 157 |
| Air filter inner element replacement | installed at least every other time the outer element is changed | p. 157 |


















