3 4 BLOCKER 1 2 BLOCKER RING RING Fig 6D 43 81ocker Ring Length Comparison 1h REAR BEARING RETAINER THRUST WASHER 1 ST GEAR 1 2 SYNCRO Fig 6D 44 Installing 1 2 Synchronizer First Gear and Rear Bearing Retainer on Mainshaft 4 Invert mainshaft then install the second blocker ring long hub in front side of 1 2 synchronizer fig 6D 45 again being sure to engage blocker ring notches with keys in synchronizer unit 3 4 SYNCRO 3RD GEAR RADIAL NEEDLE BEARING 2ND GEAR 1 2 BLOCKER RING t 1 2 SYNCRO ar 1 ST GEAR Fig 6D 45 Installing Second Gear Third Gear and 3 4 Synchronizer on Mainshaft 5 Install second speed gear fig 6D 45 with clutching teeth toward 1 2 synchronizer then place radial needle bearing on second speed gear 6 Install third speed gear clutching teeth upward onto mainshaft and seat it against the radial needle bearing fig 6D 45 7 Place 3 4 blocker ring on cone surface of third speed gear then slide 3 4 synchronizer unit onto blocker ring Be sure notches in blocker ring en gage clutch keys in synchronizer unit Install second blocker ring onto 3 4 synchronizer unit 8 If clutch gear roller bearings have become displaced load 33 needle bearings into innermost diameter and 37 needle bearings into outermost diameter using a generous amount of petroleum jelly to prevent roller bearings from becoming displaced fig 613 46 1 v Fig 6D 46 Clutch Gear Roller Bearings Installed 9 Carefully slide clutch gear onto mainshaft It is good practice to place the clutch gear on a bench with its pilot bore upward and insert the main shaft into the clutch gear This prevents accidentally dislodging the clutch gear roller bearings Set assembled mainshaft fig 6D 47 aside for later installation into transmission n Fig 6D 47 Assembled Malnshaft