REPAIR INSTRUCTIONS 71. For the extended output housing transmissions: T313–T318(21)(L21)(LR21), install a new output housing oil seal. Lightly tap the seal into place using a broad, flat-faced hammer until the seal is seated in the housing bore. Refer to “Oil Seals” on page 127 for seal installation and precautions. 565
To tighten the drive yoke retaining nut on the extended output shaft transmission or the drive yoke clamp plate capscrew for the conventional output shaft transmission, place at least two gears in both the main case and the rear case into engagement. This is done to lock the gearing and prevent it from rotating while tightening the yoke retaining nut or clamp plate capscrew. 74. Reach into the rear case top opening and verify that the splitter sliding clutch and synchronizer assembly sliding clutch are both engaged at the same time with the Hi-range/Hi-split gear.
Figure 565 — Installing Output Housing Oil Seal (T313L21/T318L21 Shown)
72. Install the drive yoke (flange) and retaining nut on the extended output shaft transmissions: T313–T318(21)(L21)(LR21). 566
75. Reach into the main case top opening and move at least two sliding clutches into engagement. This locks up the gearing to prevent it from turning while tightening the drive yoke retaining nut or clamp plate capscrew. 76. Tighten the applicable drive yoke retaining nut or clamp plate capscrew to the specified torque. When finished, make sure all gear sliding clutches and the compound sliding clutches are returned to the normal neutral positions.
Effective June 2007, drive yoke clamp plate capscrews were changed to a Scotch-Grip™ torque retention method. DO NOT reuse these fasteners, as they are one-time use only. 567
Figure 566 — Installing Drive Yoke and Nut (T313L21/T318L21 Shown)
73. For the conventional output shaft transmissions: T313–T318(L)(LR), install the drive yoke, clamp plate and retaining capscrew onto the rear mainshaft.
Figure 567 — Torquing Drive Yoke Nut (T313L21/T318L21 Shown)
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