Case IH / International Harvester 856 XL Tractor Service & Repair Manual (P/N Dcn 8-59030)
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Case Models Covered & Key Technical Specifications
Models: Case IH 856 XL, International Harvester 856 XL, D-155, D-179, D-206, D-239, D-246, D-268, D-310, D-358, DT-239, DT-358, DT402
Sub-models / Variants: Naturally aspirated, Turbocharged, 3-cylinder, 4-cylinder, 6-cylinder
Model Years: 1987
Serial Numbers: Dcn 8-59030
Technical Data:
- Engine cooling range: 90–95 °C (194–203 °F)
- Compression ratio: 16:1 (except D-268 and DT-402 at 15:1)
- Valve clearance (engine hot): 0.30 mm (0.012 inch)
- Connecting rod nut torque (1st step): 25 Nm (18.5 lb-ft)
- Crankshaft end play: 0.15–0.23 mm (0.006–0.009 inch)
- Camshaft end float: 0.10–0.45 mm (0.004–0.018 inch)
- Injection pump plunger stroke (static timing): 1.0 mm
Case Manual Features & Content Preview
- Covers 1987 Case IH / International Harvester 856 XL tractor engines, detailing the naturally aspirated and turbocharged D-155, D-239, D-358, and DT402 series variants
- Comprehensive 800+ page publication (2009 edition) based on the original 1987 OEM workshop documentation
- Features over 100 technical illustrations, including engine cross-sections, timing gear diagrams, and torque sequence charts
- Consolidates Neuss-build diesel engine specifications used across multiple tractor chassis and industrial power units
Engine Diagnostic and Service Details
When dealing with Neuss-build diesel engines in the bay, having accurate reference material is critical for efficiency. This documentation breaks down the internal architecture from the base crankcase and cylinder head assemblies to the intricacies of EP and VA-VE style fuel injection pumps. You get clear, cross-sectional views explaining the exact relationship between the cooling system, lubrication network, and the timing gear train. To help identify mechanical wear quickly, the diagnostic sections map out observable symptoms for common issues like erratic idling, poor compression, or overheating.
Specification Highlights and Clearances
Precision is everything during an engine rebuild. The reference tables map out exact tolerance values for crucial internal components. You will find multi-stage torque sequences for cylinder head bolts, specifically noting maintenance-free gasket identification. Connecting rod side clearance is strictly specified at 0.16–0.30 mm, alongside a crankshaft end play of 0.15–0.23 mm. Detailed dimensional data covers valve seats, rocker arm assemblies, and idler gear carriers. Because heavy machinery components operate under extreme pressure, always verify your equipment setup and consult a certified technician before proceeding with heavy maintenance work. The provided data ensures you have the correct specifications to machine components accurately and verify every aspect of the repair process.
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