Trac-Lok Differential - Jeep J-10 Series 1982 Technical & Service Manual

2F-40 AXLES - FRONT HUBS
Differential Torque Specifications
Service Set-ToTorques should be used when assembling components. Service In-Use Recheck Torques should be used for checking a pre-tightened Item.
USA (ft-lbs) Metric (N-m)
Service Service
Service In-Use Service In-Use
Set-To Recheck Set-To Recheck
Torque Torque Torque Torque
Model 30 Front Axle
Axle Housing Cover Bolts 20 15-25 27 20-34
Differential Bearing Cap Bo/ts 40 35-50 54 47-68
Ring Gear-to-Case Bolts 55 45-65 75 61-88
Lower Ball Stud Nut 80 min. - 108 min. -
Pinion Nut 210 200-220 271 285-298
Universal Joint U-Bolts 15 13-18 20 18-24
Upper Ball Stud Nut 100 min. - 136 min. -
Upper Ball Stud Seat 50 min. - 68 min. -
Wheel-to-Hub Nuts 80 65-90 108 88-122
Model 60 Axle
Axle Housing Cover Bolts 20 15-25 27 20-34
Support Plate Bolts/Nuts 50 45-55 68 61-75
Differential Bearing Cap Bolts 80 70-90 108 95-122
Ring Gear-to-Case Bolts 105 100-110 142 135-149
Pinion Nut 260 250-270 352 339-366
Universal Joint Strap Bolts 15 13-18 20 18-24
Wheel-to-Hub Nuts 120 110-125 163 149-169
AMC/Jeep Axle
Axle Housing Cover Bolts 170 in-lbs 150-190 in-lbs 19 17-21
Brake Tube-to-Rear Wheel Cylinder 97 in-lbs 90-105 in-lbs 11 10-12
Differential Bearing Cap Bolts 87 80-95 10 9-11
Ring Gear-to-Case Bolt 105 95-115 142 135-149
Rear Brake Support Plate Bolts 32 25-40 43 34-54
Axle Shaft-to-Hub Nuts-CJ 250 min. 250 min. 339 min. —
Clamp Strap Bolts 16 15-19 18 14-24
All Torque values given in foot-pounds and newton-meters with dry fits unless otherwise specified.
60657A
TRAC-LOK DIFFERENTIAL
GENERAL
Pigi
Assembly 2F-45
Diagnosis 2F-41
General 2F-40
Lubrication 2F-41
The Trac-Lok limited slip differential is available as
an option on Jeep vehicles equipped with the Model 208
or 300 transfer case only. Trac-Lok is used in rear axles
only and is not available on vehicles equipped with
Quadra-Trac. Two Trac-Lok units are used. Model 60
axles use a slightly different unit than is used in AMC/
Jeep rear axles. Refer to the Overhaul section for ser
vicing procedures.
* fm$$
Operation
Overhaul
2F-40
2F-41 ^m
Service Replacement
Specifications
2F-47
OPERATION
In a conventional differential, torque applied to the
ring gear is transmitted to the axle shafts through the
differential gears. During normal operation, torque
transmitted to each axle shaft is equal at all times.
However, if one wheel slips, the opposite wheel will
generate only as much torque as the slipping wheel.
With Trac-Lok, part of the ring gear torque is trans
mitted through clutch packs located between the differ
ential side gears and case. The clutch packs contain
multiple disc clutches which have radial grooves on the
plates and concentric grooves on the discs.