GMC T Series 1994 Repair Manual page 714

Figure 29 Rear Band and Selective Thrust Washer
|jg | Clean
• All Components.
| F | Inspect
1. Main shaft (662) for:
• Damaged splines.
• Wear.
Rear internal gear (666) for:
• Stripped splines.
• Damaged teeth.
• Wear.
Output shaft (671) for:
• Stripped splines.
• Damaged teeth.
• Cracks.
• Damaged bushing.
Output carrier assembly (661) for:
• Wear.
• Damaged lugs.
• Pinion gear damage.
• Washer wear.
• Pinion gear and pocket thrust surfaces
damage.
Inspect
• Excess pinion washer wear (end play should
be 0.228 to 0.610 mm (0.009 to 0.024 inch)
using feeler gage.
Front internal gear ring (658) for:
• Damage.
• Cracks.
Thrust washers (659, 673, and 674), bearings
(647 and 664) and races (646, 648, 663, 665,
and 669) for:
• Damage.
Ring output speed sensor (660) for:
• Tightness.
• Damage.