Spicer Single Drive Axles Service Manual: 34DS, 34RS, 38DS, 38RS, DS340, RS340, DS380, RS380, DS400, RS400, DS3 - Manual (Page 81)

Differential Carrier Overhaul (Forward and Rear Axle)
78
Ser
vice Procedure
Assemble Drive Pinion ("Press-fit" outer pinion bearing)
Special Instructions
Dana drive axles may be equipped with either “slip-fit” or ‘press-fit” outer pinion bearings. Procedures are contained in this section
for assembly of both types.
Lubricate parts with gear lube during reassembly.