The Arrowmax AM-174005 AM Differential Checker is an accessory for bench inspection aimed at assisting model builders and mechanics in diagnosing differential condition. It provides a means to observe rotational response and identify issues without implying compatibility with any particular chassis.
Place the differential so it can be turned under light load, monitor for uneven drag or locking, and note results to guide decisions on oil selection, clutch adjustments, or full rebuilds. The unit is intended to improve repeatability in setup workflows rather than replace precision lab instruments.
A practical bench aid for recording differential behaviour and informing maintenance and setup choices.
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