FOUR SPEED TRANSMISSION 7 I1 INDEX Page Page General Description 7 12 Side Cover 7 12 Mainshaft Assembly 7 12 Disassembly 7 12 Reverse Idler Gear Parts 7 12 Assembly 7 12 Cover Assembly 7 12 Gearshift Control Assembly Shift Linkage Case 7 12 Adjustment vTransmission lr ggpsellaneous TRemov l sf See 3 Speed Section or e eciieaions l iaintenanoe and Adjustments 7 12 Specizgu Toclils I 2 34 5 6 78910 II I2 I3I4l5l6I7I8I9 20 CC g i t 1 2I l lll IllI 1I rrr 2 i 5 I C aC s C i 2 5 A l vom I y jr ly 4uJ v v 1 aa C C x 24 lr I I A r g l Vrrr Y g e 40 C 11111 C 111111 C C C C 7 F C 1 CC C l I v i C 39 15 C s C C S gw C C C CC17 Aww 25 A C VVV CCCCCC 5 ryry 7 C i 26 IZCZZ a C CCCCC C C C CCCC C CC CCI CVVCC C CC CICIQCCC 27 N r lm CCC CCCCC V CCC z I C C i C 1 C 1 Cgi C r ttt rrrr ICCC 1 fb K i i C l iiw i C V C CCC H T C 3I I IICRI x CCCCCCC C C 35 C CC CCC C I S I Nv 34 z Ce w W CCC CC CC IE if C CC sr C C C C CCCC 1 C CCC C C CC C CCCCCCCCCCC C CCC CC Cm CCC CC CCC r 1 1 REVERSE INHIBITOR I Y 7 w C CC CC w 1 s L Fig IB Four Speed Transmission Cross Section I Bearing Retainer I2 Second Speed Gear 2I Retainer Strap 30 Reverse Idler Gear Sliding 2 Snap Ring Bearing to I3 2nd Speed Blocker Ring 22 Snap Ring Rear Bearing to 3I Woodruff Key Gear I4 I 2 Speed Synch Hub Retainer 32 Selector Shaft 3 Snap Ring Bearing to Case I5 I 2 Speed Synch Sleeve 8 23 Rear Bearing 33 Welsh Plug 4 Clutch Gear Bearing Reverse Gear 24 Snap Ring Be 1ring to 34 Oil Seal 5 Clutch Gear I6 Snap Ring I 2 Speed Mainshaft 35 Shift Finger 6 4th Speed Blocker Ring Synch 25 Synchronizer Key 36 Countergear 7 Snap Ring 3 4 Synch I7 First Speed Blocker Ring 26 Countershaft Roller 37 Front Thrust Washer 3 3 2 Sync Hlub I8 Reverse Gear h Bearings h f Ig ainsl aft Pilot Bearings Sync S eeve I9 Reverse Gear T rust 8 27 Counter S a t nap ing IO 3rd Speed Blocker Ring Spring Washers 28 Rear Thrust Washer II Third Speed Gear 20 Rear Bearing Retainer 29 Reverse Idler Shaft CORVAIR SHOP MANUAL SUPPLEMENT