Case IH 1255 & 1455 Tractor Workshop Manual (P/N Dan 8-59030)

The official Case IH publication (reference number Dan 8-59030, November 1987) provides 641 pages of authoritative service documentation for the 1987 Case IH 1255 and 1455 agricultural tractors. Replacing all previously issued instructional material for the Neuss-build direct injection engine series, this reference eliminates guesswork on the shop floor and is structured specifically for professional mechanics and experienced equipment rebuilders.

• Documents critical service parameters for both D-series naturally aspirated and DT-series turbocharged diesel engines
• Contains 212 technical illustrations and exploded-view schematics detailing the engine, fuel delivery, cooling systems, and the timing gear train
• Provides three dedicated torque-specification tables for rapid cross-referencing during assembly

Engine Service and Diagnostic Content

Spanning 25 specialized sections, the manual thoroughly maps out the power units of the 1255 and 1455 tractors. It breaks down complex diagnostics and complete engine testing benchmarks. Readers gain a comprehensive overview of the lubrication systems, crankshaft pulleys, and vibration dampers. The text details factory procedures for camshaft and idler gear servicing, valve lever assembly overhaul, and precise piston-to-cylinder sleeve fitting. It also offers deep technical insight into critical engine run-in schedules, cylinder head rework protocols, and injection pump timing for EP/VA and VE fuel systems. Working on high-compression agricultural diesel engines carries inherent physical risks. Reviewing the manufacturer's load-bearing limits and pressure release sequences before beginning any teardown is essential to prevent equipment damage or personal injury.

Technical Specifications and Dimensional Data

Accurate dimensional data is crucial for reliable and lasting engine rebuilds. This reference features highly detailed tables covering bolt torques, valve clearances, and total coolant capacities. For example, the intake valve clearance is explicitly listed at 0.30 mm within the cylinder head specifications. Main bearing cap bolt torques are mapped out in a strict three-stage sequence, culminating in a final specification of 101 to 109 lbf-ft. Furthermore, the manual documents exact engine displacement figures across the entire D-155 through DT-402 series and confirms the 15:1 compression ratio for both the D-268 and DT-402 power plants.