DodgeRam.org > Main > Tech Index > Specs > Rear Axle > D80 Rear
Dodge Ram truck Dana 80 rear axle specifications
1994-2001 Ram Dana 80 Rear Axle Specs
Visit Geno's Garage
for Truck accessories.
Geno's Garage Truck Accessories
.
Dana 80 Hybrid Rear Axle   (286RBI)
Used on 2500 with manual and V10 or Diesel, and 3500
Axle Type  Hypoid
Lubricant Thermal Stable SAE 80W-90* 
Lube Capacity 
4x2 
4x4 
..
6.8 pints ( 3.22 L ) 
10.1 pints ( 4.79 L ) 
Axle Shafts 35 Spline, 1.50" diameter
Axle Ratio Options 
3.54, 4.10 
Carrier Split .3.73 and down, 4.11 and up
Ring Gear
Diameter 
Backlash 
..
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
Original Bearing 
New Bearing 
..
10-20 in. lbs. ( 1-3 N.m ) 
15-35 in. lbs. ( 2-5 N.m ) 
Dana 80 Hybrid Traction aids available
  • Lockright
  • ARB Air Locker
  • Dana 70 Detroit Locker may be used if drilled and tapped for the larger ring gear bolts
  • Contact Reider Racing for information
Dana Bill of Materials #
1994-95 2500 2WD 605595
1994-95 2500 4WD 605596
1994-95 3500 2WD 605592, 605593, 605594
1994-95 3500 4WD 605594
1996 2500 2WD 605791, 605792
1996 2500 4WD  
1996 3500 2WD 605788, 605789, 605790
1996 3500 4WD 605790
1997 2500 2WD 605905, 605906
1997 2500 4WD 606056
1997 3500 2WD 605902, 605903, 605904, 605975, 605976, 605977
1997 3500 4WD 605904, 605977
1998 2500 2WD 605985
1998 2500 4WD 606064
1998 3500 2WD 605982, 605983, 605984
1998 3500 4WD 605984
*   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
Description
Torque
Fill Hole Plug
25 ft. lbs. (34 Nm)
Bolt, Differential Cover
30 ft. lbs. (41 Nm)
Bolt, Bearing Cap
80 ft. lbs. (108 Nm)
Nut Pinion-Minimum
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)
Hub Nut
120-140 ft. lbs. (163-190 Nm)
RWAL/ABS Sensor Bolt
18 ft.lbs (24 Nm)
TRAC-LOK Case Bolt
Standard
65-70 ft. lbs. (89-94 Nm)
Heavy Duty
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.

Additional features:


TOP HOME
 

  Last Update February 3, 2000