The ATC 9U7241 Valve Spring Compressor is a professional-grade engine service tool designed for Caterpillar 3406E, 3456, C15, and C16 diesel engines. Built as an OEM-equivalent replacement for CAT 9U-7241, this tool allows technicians to safely and efficiently compress valve springs for valve seal replacement, valve service, or cylinder head repair—without damaging valvetrain components.
High-compression Caterpillar engines require precise, controlled valve spring compression to avoid bending valves, damaging retainers, or stressing valve guides. The ATC 9U7241 provides stable engagement and even compression force, allowing for smooth removal and installation of valve keepers while maintaining correct component alignment. This makes it ideal for both in-frame repairs and bench cylinder head service.
Manufactured from heavy-duty, shop-grade materials, the ATC 9U7241 is engineered for repeated professional use in dealership service bays, fleet maintenance facilities, and diesel engine rebuild shops servicing heavy-duty CAT platforms.
Key Features & Benefits
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Designed for Caterpillar 3406E, 3456, C15, and C16 engines.
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Direct OEM-equivalent replacement for CAT 9U-7241.
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Safely compresses valve springs for valve and seal service.
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Allows controlled removal and installation of valve keepers.
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Prevents damage to valves, retainers, and guides.
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Precision-machined for proper fit and reliable operation.
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Heavy-duty construction for long-term professional shop use.
Applications
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Caterpillar 3406E / 3456 / C15 / C16 diesel engines
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Valve seal replacement
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Valve and cylinder head service
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In-frame repairs and engine rebuild operations