The ATC J-46392 Engine Barring Tool is a heavy-duty service tool designed to manually rotate the crankshaft on Detroit Diesel DD13, DD15, DD16, as well as Mercedes-Benz MBE4000 and MBE900 engines. Built as a direct OEM-equivalent replacement for W904589046300, this barring tool allows technicians to safely and precisely position the engine during critical service procedures such as valve and injector adjustments, camshaft timing, overhead set-ups, diagnostic testing, and engine assembly.
Modern Detroit and MBE engines require controlled crankshaft rotation to achieve exact Top Dead Center (TDC) positioning and correct timing alignment. Using improper methods to rotate the engine can damage ring gears, timing components, or front accessory drives. The ATC J-46392 interfaces correctly with the flywheel or designated barring location, providing smooth, positive engagement and controlled rotation without risk of component damage.
Manufactured from high-strength, shop-grade materials, this barring tool is ideal for dealership service departments, fleet maintenance facilities, and professional diesel rebuild shops working on Freightliner, Western Star, and other platforms powered by Detroit and Mercedes-Benz heavy-duty engines.
Key Features & Benefits
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Designed for Detroit Diesel DD13, DD15, DD16 engines.
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Compatible with Mercedes-Benz MBE4000 and MBE900 platforms.
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Direct replacement for OEM tool W904589046300 / J-46392.
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Enables safe, controlled crankshaft rotation for timing, valve, and injector procedures.
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Prevents damage caused by improper engine rotation methods.
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Precision-machined for proper engagement and long service life.
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Heavy-duty construction suitable for repeated professional shop use.
Applications
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Valve and injector adjustment
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Camshaft timing and alignment
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Engine assembly and teardown
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Diagnostic and inspection procedures
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Fleet maintenance, dealership service, and engine rebuild operations