REPAIR INSTRUCTIONS 55. For the extended output shaft transmissions: T313–T318(21)(L21)(LR21), suspend the output shaft and synchronizer assembly, using a hoist and suitable output yoke retaining nut with welded strap. Lift and install the synchronizer and output shaft assembly between the rear countershafts. Make sure to retain timing mark alignment. 553
Make sure the single timing mark on each countershaft Hi-range/Hi-split gear and Lo-range gear aligns with the double timing marks painted on the corresponding rear mainshaft gears. 56. Remove the threaded eye bolt or nut with welded strap from the end of the rear mainshaft. 57. Install a new case-to-case gasket on the gasket surface of the main case. 58. Using a hoist and chain, carefully lower the rear case over the compound gear set and onto the main case and gasket. 554
Figure 553 — Installing Output Shaft and Synchronizer Assembly (T313LR21/T318LR21 Shown)
Figure 554 — Installing Rear Case
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