Mainshaft and Gear-Train Installation
1. Roll gear case onto its left side.2. Grip mainshaft at pilot bearing hub and just behind reverse gear. Then lift assembly and guide rear of shaft through bearing bore at rear of case.
3. Continue holding front of shaft but switch grip at rear to shaft output splines. Lift mainshaft assembly slightly, align gears and seat assembly in case.
4. Set transmission case upright.
5. Install drive gear thrust bearing on mainshaft. Use plenty of petroleum jelly to hold bearing in place.
6. Check alignment and mesh of mainshaft gears. If gears are not aligned, roll case on side and realign shaft and gears in case.