Differential - Dana Limited-Slip

Fig 1: Exploded View Of Two-Pinion Limited-Slip Differential - Model 60-1U Trac-Lok® (Full -Floating Axle)

Courtesy of FORD MOTOR CO.

Fig 2: Exploded View Of Powr-Lok® Differential - Model 70

Courtesy of FORD MOTOR CO.

Fig 3: Identifying Limited-Slip Differential Power Flow With Both Wheels Driving - Cutaway

Courtesy of FORD MOTOR CO.

Fig 4: Identifying Limited-Slip Differential - Model 70-2U Powr-Lok® - Cutaway

Courtesy of FORD MOTOR CO.

Fig 5: Exploded View Of Differential Clutch Pack - Model 60-1U Trac-Lok®

Courtesy of FORD MOTOR CO.

The Model 60 differential clutch packs have clutch discs with concentric grooves and clutch plates with radial grooves. The Model 70 Powr-Lok® differential has paper-coated clutch packs. Prior to assembly, soak the clutch packs for 20 minutes in Additive Friction Modifier XL-3 or equivalent meeting Ford specification EST-M2C118-A. Arrangement of these plates and discs is at the option of the vehicle manufacturer. During disassembly, note the arrangement of these components to maintain their order during assembly.

Each differential clutch pack is premeasured to assure correct stack height. Do not separate the differential clutch packs and intermix the clutch plates and clutch discs from other differential clutch packs.

In diagnosis of vehicle operator complaints, two things must be recognized:

• If, with unequal traction, both wheels slip, the limited-slip has done all it can possibly do.
• In extreme cases of differences in traction, the wheel with the least traction may spin after the limited-slip has transferred as much torque as possible to the non-slipping wheel.