Proper ring gear and pinion depth must be checked using the Pinion Depth Gauge Set T79P-4020-A which shows correct pinion shim required to assure acceptable running condition.
Section 05-00: Axle and Driveshaft, Service | 1996 F-150, F-250, F-350 4x2 and 4x4, F-Super Duty and Bronco Workshop Manual |
Axle Backlash Check
| Description | Tool Number |
|---|---|
| Pinion Depth Gauge Set | T79P-4020-A |
The differential case (4204) and drive pinion should be inspected before they are removed from the differential carrier casting. These inspections can help determine the cause of the concern and the correction needed.
Wipe the lubricant from the internal working parts and visually inspect the parts for wear or damage.
Rotate the gears to see if there is any roughness which would indicate worn or damaged bearings or gears.
Check the ring gear and pinion teeth for signs of scoring, abnormal wear or nicks/chips.
NOTE: On F-Series and Bronco vehicles equipped with anti-lock brakes, mount Dial Indicator with Bracketry TOOL-4201-C or equivalent on the carrier so the tip of the dial indicator contacts the backface of the ring gear and pinion. There is a space provided between the anti-lock speed sensor ring and the ring gear and pinion for measuring ring gear and pinion backface runout.
Set up a dial indicator, and check ring gear and pinion backlash and ring gear and pinion backface runout.
Proper ring gear and pinion depth must be checked using the Pinion Depth Gauge Set T79P-4020-A which shows correct pinion shim required to assure acceptable running condition.