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|1994-2001 Ram Dana 80 Rear Axle Specs|
|Visit Geno's Garage
for Truck accessories.
Dana 80 Hybrid Rear Axle (286RBI)
Used on 2500 with manual and V10 or Diesel, and 3500
|Lubricant||Thermal Stable SAE 80W-90*|
|Axle Shafts||35 Spline, 1.50" diameter|
|Axle Ratio Options||
|Carrier Split||.3.73 and down, 4.11 and up|
11.00 in. ( 279.4 mm )
0.005- 0.009 in. ( 0.13-0.23 mm )
|Pinion Standard Setting||...5.812 in. ( 124.625 mm )|
|Pinion Bearing Preload
10-20 in. lbs. ( 1-3 N.m )
15-35 in. lbs. ( 2-5 N.m )
|Dana 80 Hybrid Traction aids available||
|Dana Bill of Materials #||
|* Add 8 oz of friction modifier to Trac-lok
differentials on 2WD trucks.
Add 10 oz of friction modifier to Trac-lok differentials on 4WD trucks.
Dana 80 Axle Torque Specs
|Fill Hole Plug||
25 ft. lbs. (34 Nm)
|Bolt, Differential Cover||
30 ft. lbs. (41 Nm)
|Bolt, Bearing Cap||
80 ft. lbs. (108 Nm)
450-500 ft. lbs. (597-678 Nm)
|Bolt, Ring Gear||
200-240 ft. lbs. (272-325 Nm)
|Bolt, Axle to hub||
90 ft. lbs. (123 Nm)
120-140 ft. lbs. (163-190 Nm)
|RWAL/ABS Sensor Bolt||
18 ft.lbs (24 Nm)
TRAC-LOK Case Bolt
65-70 ft. lbs. (89-94 Nm)
90-100 ft. lbs. (122-136 Nm)
Dana 80 Hybrid (286 RBI) Axle Description
The 286 Rear Beam-design Iron (RBI) axle
housing consists of a iron center casting (differential housing) with axle tubes
extending from the center section sides. The axle tubes are pressed into the
differential housing to form a one-piece axle housing assembly. The integral
type differential housing hypoid gear housing has a pinion center line below
the centerline of the ring gear.
Full floating axle shafts are retained by bolts attached to the wheel hub, which rides on two bearings at the outboard end of the axle tubes. The axle shafts may be removed without disturbing the wheels, hubs, or wheel bearings. The wheel support bearings are opposed tapered roller bearings contained in the hub assembly.
A removable stamped steel cover provides access for inspection and maintenance of the differential assembly. A small stamped metal axle gear ratio identification tag is attached to the cover by one of the cover bolts. This tag also lists the number of ring gear and pinion teeth.
The differential case of the standard (open) differential is a one-piece design. The differential pinion mate shaft is retained by a roll pin. Differential bearing preload and ring gear backlash are adjusted by shims between the differential bearing cones and the differential case. Pinion bearing preload is set by solid shims on the pinion.
An option Power-Lok limited slip differential
features a two-piece differential case, four pinion gears, and a one piece pinion
mate cross shaft. The cross shaft provides a ramping motion against a clutch
pack on each side gear to transfer wheel torque under poor traction conditions..
Each clutch pack consists of six clutch disks and five plates, and fits between
a side gear and the carrier case. Only one clutch disk in each pack is dished,
the rest are flat.
Dana 80 2500 axles and 3500 axles are identical except for the outer wheel spindle and hub assembly.
Last Update February 3, 2000