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During overhaul, it is usually possible to replace this bearing sleeve if it is badly worn. The reverse configuration, fixing the gudgeon pin to the connecting rod instead of to the piston, is implemented using an interference fit with the small end eye instead, with the gudgeon pin journals in the piston functioning as bearings. [4]
The initial design of the GM 10.5" 14-bolt differential spanned from 1973 to 1984, remaining unaltered until 1986. This iteration featured brake drums secured by wheel studs and utilized a smaller diameter pinion bearing compared to the subsequent design. The second design, in production since 1986, introduced notable improvements.
Factory center section's biggest flaw is the pinion bearing pilot support, which are prone to cracking due to the nature of the pinion gear/crown gear relationship. Factory center sections carry two (2) different bearing dimensions (3.0625 and 3.250 in or 77.7875 and 82.5500 mm).
The functions of this design are to change the axis of rotation by 90 degrees (from the propshaft to the half-shafts) and provide a reduction in the gear ratio. The components of the ring-and-pinion differential shown in the schematic diagram on the right are: 1. Output shafts 2. Drive gear 3. Output gears 4. Planetary gears 5. Carrier 6.
This ring and pinion is significantly stronger with a better pinion to ring gear tooth contact patch and angle. It was typically used in the back of jeep JKs, Isuzus and Nissan pickups. This ring and pinion does share some components and can be adapted into an earlier Dana 44 but requires some work, different bearings and spacers.
The first version was produced from 1985 to 1992. The second version, produced from 1993 to 1997 featured a stronger pinion/yoke. This corrected a known, but rare, issue of the pinion yoke nut working loose. The first and second versions of the 10.25 axle are colloquially known as “short pinion-yoke” and “long pinion-yoke” respectively.
The most apparent difference is a 12 bolt cover instead of the traditional 10. The super 8.8 also uses larger bearings,longer pinion with larger nut, and most significantly 34 spline axles or half shafts. First Look: Ford Performance Super 8.8-inch Ring And Pinion For S550
The Dana 80 Trac Lok is unique being it is a 4 pinion unit, unlike other Dana Trac Lok units with 2 pinions. This was the only rear axle available for the 2nd generation Dodge Ram 3500 trucks. [2] 35 Spline Dana 80 in a 2002 Dodge 2500HD Diesel
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