Ranger 4WD V6-3.0L VIN U (1997)
Differential Case: Testing and Inspection
1. Clean the trunnions on the differential and install the Dummy Bearings T86T-4222-AH onto the differential case.
NOTE: Remove all burrs and nicks from hubs so master bearings rotate freely.
2. Place the differential case into carrier (without pinion). The differential case should move freely in the carrier. Mount Dial Indicator D78P-4201-B
or TOOL-4201-C or equivalent against the differential case flange.
3. Locate the tip of the indicator on the flat surface of one ring gear bolt.
4. Force the differential case toward the dial indicator as far as possible and zero the dial indicator with force still applied.
NOTE: Dial indicator should have a minimum travel capability of 8.89mm (0.350 inch).
5. Force the differential case away from the dial indicator as far as it will go. Repeat this procedure until the same reading is obtained. Record the
dial indicator reading as Measurement "A" on the worksheet for calculating ring gear backlash and differential bearing preload shims.
NOTE: This reading indicates the amount of shims needed behind the differential side bearings to take up total clearance between the differential
bearing cup and carrier. This reading will be used under Pinion and Ring Gear Backlash
6. Remove the differential case from the carrier housing. Do not remove the master differential bearings at this time
