GEAR BOX 34 17.Take out the reverse gear assembly. 18. Remove needle roller cage. INSPECTION Following points should be checked before starting to assemble the main shaft: • Gear teeth for breakage, wear, pitting, scoring and overheating marks. • Bearing seats for rotation marks. • Splines for breakage, burrs and wear on sides. • Main shaft oil seal lip contact area for wear. • Main shaft diameter and collar for scoring, rubbing and overheating marks. SYNCHRO CONE INSPECTION • Inspect cone surface for wear on 1 st, 2nd, 3rd, 4th & 5th main shaft gear. • Place the synchro cone on matching gear cone and rotate until it stops (approx. 10 to 20 degrees) then measure the clearance between ring and gear. • Check for synchro cone gaps. It should be 1 + 0.3 mm. SYNCHRO SLEEVE AND HUB INSPECTION • Inspect the gear teeth on all synchro hubs and sleeves for rounded off corners, indicating wear. • Install each hub in its mating sleeve and check for free movement.
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