SPECIFICATIONS
181 FBI AXLE
Axle Type .......................... Hypoid
Lubricant–Std. .... SAEThermally Stable 80W–90
Lubricant–Heavy Duty . . . SAE 75W–140 Synthetic
Lube Capacity ............... 1.48 L (3.13 pts.)
Axle Ratio ................ 3.07, 3.55, 3.73, 4.10
Differential Side Gear Clearance . . . 0.12–0.20 mm
(0.005–0.008 in.)
Ring Gear Diameter ......... 18.09 cm (7.125 in.)
Backlash ........... 0–0.15 mm (0.005–0.008 in.)
Pinion Std. Depth ........... 92.1 mm (3.625 in.)
Pinion Bearing Rotating Torque ...............
Original Bearings ....... 1–2N·m(10–20 in. lbs.)
New Bearings ......... 1.5–4 N·m (15–35 in. lbs.)
186 FBI AXLE
Axle Type .......................... Hypoid
Lubricant–Std. .... SAEThermally Stable 80W–90
Lubricant–Heavy Duty . . . SAE 75W–140 Synthetic
Lube Capacity ................ 1.18 L (2.5 pts.)
Axle Ratio ................ 3.07, 3.55, 3.73, 4.10
Differential Side Gear Clearance . . . 0.12–0.20 mm
(0.005–0.008 in.)
Ring Gear Diameter ......... 18.59 cm (7.33 in.)
Backlash ........... 0–0.15 mm (0.005–0.008 in.)
Pinion Std. Depth ........... 92.1 mm (3.625 in.)
Pinion Bearing Rotating Torque ...............
Original Bearings ....... 1–2N·m(10–20 in. lbs.)
New Bearings ......... 1.5–4 N·m (15–35 in. lbs.)
TORQUE
DESCRIPTION TORQUE
Fill Hole Plug .............. 34N·m(25ft.lbs.)
Diff. Cover Bolt ............. 41N·m(30ft.lbs.)
Bearing Cap Bolt............ 61N·m(45ft.lbs.)
Ring Gear Bolt ....... 95–122 N·m (70–90 ft. lbs.)
Axle Nut ................ 237N·m(175 ft. lbs.)
Hub Brg. Bolt ............. 102N·m(75ft.lbs.)
Lower Ball Stud ........... 108N·m(80ft.lbs.)
Upper Ball Stud ........... 101N·m(75ft.lbs.)
SPECIAL TOOLS
181 and 186 FBI AXLE
Puller—C-293-PA
Plug—SP-3289
Adapter—C-293-39
Puller—C-452
Wrench—C-3281
XJ TUBE, 181, AND 186 FBI AXLE 3 - 61
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