Spicer Single Drive Axles Service Manual: 34DS, 34RS, 38DS, 38RS, DS340, RS340, DS380, RS380, DS400, RS400, DS3 - Manual (Page 56)

Power Divider Overhaul
53
Assemble Inter-axle Differential
Special Instructions
Lubricate parts with gear lube during assembly
Procedure -
1. Install bushings, side pinions and thrust washers on inter-axle differential spider.
2. Install spider assembly in one differential case half, align punch marks and install other case half, secure assembly with bolts
and locknuts, tighten to correct torque (17-23 ft. lbs, 23-31 N.m).
Note: Side Pinion Bushings. Not used on tandems built after November 1, 1991. Use when originally equipped.
Note: Starting in June 1993, production axles were made with bushing less output shaft 128736. Do not attempt to install
bushings in shafts with P/N's 128736 or 129194* stamped into them. Ref. bulletin AXIB-93-06* (output shaft w/metric
threads used in axles after 1-3-95).
Assembling Non-Current Production Inter-Axle Differentials