The M50112‑A Rear Crankshaft Seal & Wear Sleeve Installer is a purpose-built, professional-grade installation tool designed exclusively for the Mack E6, E7 and E7 ETech engine families. This kit enables precise, controlled installation of the rear crankshaft oil seal and wear sleeve in heavy-duty applications. The M50112-A must be used when installing seal & wear sleeve together. Note caution when installing Teflon seals. Oversize inside diameter lip seal and wear ring are shipped assembled, do not remove before assembly.”
Constructed with rugged materials and shop-ready design, the tool plate mounts to the crankshaft using three guide pins and ensures proper driving depth and concentric alignment of the seal-wear sleeve assembly—critical for maintaining oil-tight integrity and avoiding premature leakage, seal walk-out or flange damage.
Key Features & Benefits
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Tailored for Mack E6, E7 & E7 ETech engines—addresses the specific seal/wear sleeve geometry of these platforms.
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Ensures accurate seating of both the wear sleeve and lip seal in a single controlled operation.
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Prevents damage to seal lips and ensures correct depth and alignment—minimising risk of oil leaks or re-work.
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Heavy-duty construction intended for frequent use in professional engine rebuild, remanufacturing and service shop environments.
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Helps restore crankshaft-to-seal geometry to OEM standards, boosting engine reliability and longevity.
Heavy item not elgible for free freight