Specifications

8 1/4 Inch axle

Axle Type . . . . . . . . . . . . . . . Semi-floating, hypoid

Lubricant . . . . . . . . . . . . . . . . . . . . . . SAE 80W-90

Lube Capacity . . . . . . . . . . . . . . . . 2.22 L (4.7 pts.)

Trac-Lok Additive . . . . . . . . . . . . . . . 148 ml (5 oz.)

Axle Ratio . . . . . . . . . . . . . . . . . . . . 3.21, 3.55, 3.92

Differential

Case Clearance . . . . . . . . . . . . . 0.12 mm (0.005 in.)

Case Flange Runout . . . . . . . . 0.076 mm (0.003 in.)

Ring Gear

Diameter . . . . . . . . . . . . . . . . . . 20.95 cm (8.25 in.)

Backlash . . . . . . . . . 0.12-0.20 mm (0.005-0.008 in.)

Runout . . . . . . . . . . . . . . . . . . 0.127 mm (0.005 in.)

Pinion Bearing Preload

Original . . . . . . . . . . . . . . . . 1-2 N*m (10-20 in.lbs.)

New . . . . . . . . . . . . . . . . . . . 2-5 N*m (15-35 in.lbs.)

9 1/4 Inch axle

Axle Type . . . . . . . . . . . . . . . Semi-floating, hypoid

Lubricant . . . . . . . . . . . . . . . . . . . . . . SAE 75W-90

Lube Capacity . . . . . . . . . . . . . . . . 2.32 L (4.9 pts.)

Trac-lok Additive . . . . . . . . . . . . . . . . 148 ml (5 oz.)

Axle Ratio . . . . . . . . . . . . . . . . . . . . 3.21, 3.55, 3.92

Differential

Case Flange Runout . . . . . . . . 0.076 mm (0.003 in.)

Ring gear

Diameter . . . . . . . . . . . . . . . . . . 23.50 cm (9.25 in.)

Backlash . . . . . . . . . 0.12-0.20 mm (0.005-0.008 in.)

Runout . . . . . . . . . . . . . . . . . . 0.127 mm (0.005 in.)

Pinion Bearing Preload

Original . . . . . . . . . . . . . . . . 1-2 N*m (10-20 in.lbs.)

New. . . . . . . . . . . . . . . . . . 2-5 N*m (15-35 in. lbs.)

8 1/4 And 9 1/4 inch axle

8 1/4 and 9 1/4 INCH AXLE

DESCRIPTION  TORQUE

Diff. Cover Bolt . . . . . . . . . . . . . 41 N*m (30 ft. lbs.)

Bearing Cap Bolt-8 1/4 Axle . . 95 N*m (70 ft. lbs.)

Bearing Cap Bolt-9 1/4 Axle . . . . . . . . . . 136 N*m (100 ft. lbs.)

Pinion Nut . . . . . . . . . . . . . . . 285 N*m (210 ft. lbs.)

Ring Gear Bolt-8 1/4 Axle . . . 102 N*m (75 ft. lbs.)

Ring Gear Bolt-9 1/4 Axle . . 157 N*m (115 ft. lbs.)

Backing Plate Bolt . . . . . . . . . . 64 N*m (48 ft. lbs.)

RWAL/ABS Sensor Bolt . . . . . . 24 N*m (18. ft. lbs.)

Threaded Adjuster Lock Screw . . 10 N*m (90 in. lbs.)

Special tools

8 1/4 And 9 1/4 axles

Puller, Hub-6790

Remover, Bearing-6310

Installer-C-4198

Handle-C-4171

Installer-C-4076-B

Handle-C-4735-1

Remover-C-4828

Installer-C-4826

Holder-6719

Puller-C-452

Installer-C-3860-A

Installer-C-3718

Adjustment Rod-C-4164

Puller/Press-C-293-PA

Adapters-C-293-48

Plug-SP-3289

Adapters-C-293-47

Plug-C-293-3

Installer-C-4340

Installer-C-4213

Holder-8136

Holder-8138

Installer-C-4345

Remover-C-4307

Remover-C-4309

Adapters-C-293-37

Installer-C-4308

Installer-C-4310

Installer-D-130

Installer-D-129

Installer-6448

Installer-C-3095

Trac-lok Tools-8140

Trac-lok Tools-6960

Trac-lok Tools-C-4487

Trac-lok Tools-8139

Pinion Gauge Block-8540

Pinion Gauge Block-8542

Arbor Discs-8541

Pinion Gauge Set