Part of the Case IH Repair Manuals.
This 969-page Case IH Repair Manual (OEM #87515687) opens up the 8.3L and 9.0L, 6-cylinder, 24-valve High Pressure Common Rail Fuel System on the 6TAA-8304 and 6TAA-9004 engines built into the 2377, 2388, MX215, MX245, MX275, MX305, STX280, and STX330. Open it and you get full procedure write-ups for the injection system, turbocharger, air cooler, coolant circuit, lubrication system, and starting system, plus a dedicated troubleshooting section with error codes for chasing fuel pressure faults instead of swapping parts on a hunch. The torque tables don't round off: pressure regulator valve cap screws go 3 Nm then 6 Nm, the fuel rail pressure sensor torques to 50 Nm, and you replace the fuel rail if pressure deviates more than 200 bar. Your injection pump shouldn't be a guessing game. Bookmarked by section so you jump straight to fuel system work without flipping through 969 pages on a phone in the shop.
What's Inside This Case IH 6TAA-8304 / 6TAA-9004 Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 4-29 | Foreword – How to Use This Manual, Safety Rules, Basic Instructions, Torque, Definition, Conversion Factors, Product Identification |
| Engine - 10.A | 30-391 | Engine - Special Tools, Engine - General Specification, Valve Drive, Crankshaft, Connecting Rod and Piston, Cylinder Head |
| Fuel and Injection System - 20.A | 392-647 | Fuel and Injection System - General Specification, Fuel and Injection System - Service Limits, Fuel and Injection System - Special Tools, Regulator Valve, Relief Valve |
| Air Intake System - 30.A | 648-739 | Air Intake System - Service Limits, Air Intake System - Special Tools, Air Intake System - General Specification, Turbocharger, Air Cooler, Air Intake Manifold |
| Exhaust System - 40.A | 740-753 | Ex |
| Engine Coolant System - 50.A | 754-831 | |
| Lubrication System - 60.A | 832-935 | |
| Starting System - 80.A | 936-969 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Torque (Pressure regulator valve cap screws) | 3 Nm (26.5 lb in) then 6 Nm (53 lb in) | p. 403 |
| Torque (Pressure regulator valve housing cap screws) | 34 Nm (25 lb ft) | p. 403 |
| Torque (Fuel rail pressure sensor) | 50 Nm (70 lb ft) | p. 430 |
| Replacement criteria (Pressure reading) | Replace if measured value is greater than 30 bar (435 psi) | p. 633 |
| Torque (ECM cap screws and nut) | 25 Nm (18 lb ft) | p. 90 |
| Torque (Connector hex head cap screws) | 2 Nm (18 lb in) | p. 90 |
| Torque (Injector clamp cap screws) | 10 Nm (89 lb in) | p. 410 |
| Torque (Fuel connector retaining nut) | 41 Nm (31 lb ft) | p. 410 |
| Engine Firing Order | 1.5.3.6.2.4 | p. 39 |
| Rocker arm cap screws torque | 65 Nm | p. 40 |
| 6TAA-8304 | ||
| Engine Displacement, 6TAA-8304 | 8.3 L | p. 39 |
| 6TAA-9004 | ||
| Engine Displacement, 6TAA-9004 | 8.9 L | p. 39 |
