Bronco L6-300 4.9L VIN Y 1-bbl (1983)
2.
Install pinion into carrier.
3.
Install new preload shims over pinion. Install outer pinion bearing cone and oil slinger. Assemble end yoke, washer, deflector and slinger onto
pinion shaft and align assembly. Install a new pinion nut and torque to 200---220 ft. lbs. on except model 60 monobeam type axle or 240-300 ft.
lbs. on model 60 monobeam axle.
4.
Rotate pinion nut with an inch-pound torque wrench. Rotating torque should be 20---40 inch lbs. on except model 28 axle or 10 inch lbs. on model
28 axle. To increase preload, remove shims. To decrease preload, add shims.
5.
Install bearing caps and torque to 80---90 ft. lbs. on except model 28 axle or 35---40 ft. lbs. on model 28 axle.
6.
Install suitable final check gauge block onto top of the pinion button under the gauge tube. Place thumb on the gauge block to ensure block is
level.
7.
Insert feeler gauges between gauge tube and final check gauge block until a slight drag is felt.
8.
On except model 28 axles, the reading should be .020 inch added to the drive pinion etching, which could be plus (+) or minus ( - ) with a
tolerance of .002 inch. On model 28 axles (for example), if original pinion is etched (+) 4 (m + 10), and the new pinion is etched ``0'', then a new
selective slinger is .004 inch thicker than the original selective oil slinger. If the original pinion is ``0'' and the new pinion is etched (+) 3 (m + 8),
the new selective slinger should be .003 inch thinner than the original slinger.
9.
With drive pinion at the correct depth, remove yoke, washer and nut.
10.
Coat oil seal with suitable lubricant. Install drive pinion oil seal. After installation, ensure garter spring did not pop out. If garter spring pops out,
remove and replace seal.
11.
Install yoke. Install washer and nut. Tighten nut to 200---220 ft. lbs. on except model 60 monobeam axle or 240-300 ft. lbs on monobeam type
axle.
Total Differential Case Endplay, Dana/Spicer, Front Drive
1.
Attach ring gear to the differential case using new bolts. Torque bolts alternately and evenly to 50---60 ft. lbs. on except model 60 monobeam axle
or 100-120 ft. lbs on model 60 monobeam axle.
2.
Clean trunnions on the differential and install the master differential bearings on to differential case. Remove all burrs and nicks from hubs so
master bearings rotate freely.
3.
Place differential case into carrier (without pinion). The differential case should move freely in the carrier assembly. Position a suitable dial
indicator against differential case flanges. Locate tip of the indicator on the flat surface of one ring gear bolt. Force the differential case toward the
dial indicator as far as possible and zero dial indicator with force still applied. Dial indicator should have a minimum of .200 inch travel. Force
differential case away from the dial indicator as far as it will go. Repeat this procedure until the same reading is obtained. Record dial indicator
reading. This reading indicates the amount of shims needed behind the differential side bearings to take up total clearance between the differential
bearing and case. This reading will be used during pinion and ring gear backlash adjustment.
4.
Remove differential case from the carrier. Do not remove the master differential bearings at this time.
