Spicer IPL: Models ON or AFTER June 10, 2013 - Manual (Page 54)

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Service Carriers
S590 - Double Reduction Carrier
18.50" Ring Gear Diameter
Side Gear # 300GD101
These are "Forward" carrier units by design. These carriers will
directly replace single axle models called out as; S23-590, S26-
590, S30-590, S35-590 and replace tandem models called out as;
R46-590, R52-590, R60-590, R70-590 with no modifications.
Side Gear New
Ratio Spline Carrier Notes
4.75 46 Inv 683152
4.99 46 Inv 683153
5.19 46 Inv 683154
5.44 46 Inv 683155
5.70 46 Inv 683156
5.98 46 Inv 683157
6.34 46 Inv 683158
6.65 46 Inv 683159
7.30 46 Inv 683160
7.48 46 Inv 683161
7.75 46 Inv 683162
8.55 46 Inv 683163
9.51 46 Inv 683164
9.97 46 Inv 683165
10.90 46 Inv 683276
S590D - Double Reduction with Diff Lock
Carrier
18.50” Ring Gear Diameter
Side Gear # 300GD101
These are "Forward" carrier units by design. These carrier units
will directly replace single axle models called out as; S23-590D,
S26-590D, S30-590D and S35-590D and replace models called
out as; R52-590D, R60-590D, R70-590D with no modifications.
Side Gear New
Ratio Spline Carrier Notes
4.75 46 Inv 683166
4.99 46 Inv 683167
5.19 46 Inv 683168
5.44 46 Inv 683169
5.70 46 Inv 683564
5.98 46 Inv 683621
6.34 46 Inv 683391
6.65 46 Inv 683393
7.30 46 Inv 683565
7.48 46 Inv 683566
7.75 46 Inv 683567
8.55 46 Inv 683392
9.51 46 Inv 683568
9.97 46 Inv 683569
10.90 46 Inv 683277