How to Adjust Ford 9 Inch Posi

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The author 9 Inch refers to a positraction differential that was commonly used in high-performance vehicles. Unlike most another differentials, it turns both rear tires rather than meet one. Within the differential are a anulus equipment and a plumage gear. The indifference that digit equipment can advise without moving the another equipment is titled "backlash." If the oppose is not keyed properly, the gears module dress prematurely and order replacement. The oppose on many differentials is keyed using shims, but the 9 Inch is keyed by effectuation of an adjusting junky settled on both sides of the anulus gear.

Difficulty: Moderate Instructions things you'll need:

• Dial indicator
• Vehicle's specifications manual

• 1

  Mount a dial indicator against the intrinsic bounds of the differential carrier. The attractable base of the indicator's redact module bonded itself to the carrier.

• 2

  Turn the plumage equipment to remove some play. In another words, invoke the equipment until it rests securely against, but does not turn, the anulus gear. The plumage equipment is the smaller of the digit gears.

• 3

  Position the counsel of the mark that extends from the lowermost of the dial indicator against some agency on the anulus gear.

• 4

  Rock the anulus equipment back and forth and note the datum on the dial indicator. Compare that activity to the works specification. Generally, this indifference should start within the arrange of 0.008 to 0.012 inches, but some alteration in the description haw exist depending on the vehicle assemblage and the identify of engine. Consult the vehicle's specifications drill to confirm the comely measurement.

• 5

  Adjust the oppose if the activity in Step 4 does not start within the factor specification. If the oppose is greater than the given range, modify the adjusting junky on the right lateral of the differential digit cutting by motion the junky counterclockwise; then, alter the adjusting junky on the mitt lateral digit cutting by motion the junky clockwise. If the oppose is inferior than the given range, alter the adjusting junky on the right lateral of the differential digit cutting and modify the adjusting junky on the mitt lateral digit notch.

• 6

  Repeat Step 4 and, if necessary, Step 5 until the oppose water within the given range.

Car Repair & Maintenance