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Home >> Mercury >> 2007 >> Montego Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 48 (Rear Drive Axle/Differential - DANA S110 & S130 -- F450-F550 Super Duty) >> Description And Operation >> Rear Drive Axle and Differential >> Gear Set Identification

Gear Set Identification

WARNING: This page is about a different car, the 2005 Ford F550 Super Duty and 2005 Ford F450 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Gear Set
G03918516Courtesy of FORD MOTOR CO.
  1. The trademark shows the company logo and identifies the location of the manufacturing facility.
    2. CAUTION: Never mate a differential ring gear and pinion together that do not have the same matched set numbers. Always install a new matched set if discarding either the differential ring gear or the pinion.
  2. A corresponding number marked on the differential ring gear and pinion identifies them as a matched set.
  3. The number of teeth on the pinion and the number of teeth on the differential ring gear result in gear ratio. A tooth combination of 41-11, for example, would indicate that the pinion has 11 teeth and the ring gear has 41 teeth that results in a 3.73:1 ratio.
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