CLUTCH AND TRANSMISSIONS 7 8 Shim Slack Selection NOTE A hard plastic seal with shouldered Remove the shift housing trim cover on Corsa models Fltgd holes luf per fieillil Shcgukj bi OI mp Of the by removing the two cross recess head screws and the ShOC dpi n QQ an 3 ilfft p xbm bowirtsea shift lever knob Provide access to the shift tower by th u d 8 5 Wei the 1 er QR ia Ethan disengaging the carpet and moving it out of the way SGZIS naigslasy ztamg d Cgggelpasliim Qpzglges ig 1 Remove the front underbody tunnel cover possible reinstallation Discard any flat washers 2 Remove four nuts from the underside of the floor used fOr ShimS pan Shift umn 4 Obtain a micrometer measurement of the floor 3 Lift the entire shift lever assembly upward to dis thickness at all four sides of the opening Compare engage it from the shifter tube pocket and floor pan the average measurement to the Dimension A I 2 3 4 5 B 9 IO I I I2 I3 I ea W it c I I5 I6 if 3 f J g I4 i iyji r 3 W3031 r tt I l r l 25 2627 g W C 32 33 34 35 36 37 38 20 2I 22 23 2 lt 2 eydt e 67 l l fsf if I ttl 68 I le f 39 69 i if I i 57 7 l iiil SBZQ t i 72 P 7 yl l 5960 Q T l 5 so ov 6 if nf e I 52 sz 54 ew lll 505I Q K 3 4849 63 l 6 7 64 T I 44 5 r T Y 42 43 65 9 g 40 4I 2 66 l is e Lr I fe Fig IIA 3 Speed Exploded View I Woodruff Key 22 2 3 Synchronizer Sleeve 39 Mainshaft 56 Ist Speed Gear 2 Countershaft 23 Synchronizer Key Retainer 40 Snap Ring Bearing to Shaft 57 Ist 8 Reverse Shift Fork 3 Thrust Washer 24 Synchronizer Keys 4I Retainer Bolt 58 Interlock Ball 4 Needle Washer 25 Synchronizer Hub 42 Retainer Strap 59 Interlock Ball 5 Countergear 26 Synchronizer Key Retainer 43 Mainshaft Rear Bearing 60 Ist 8 Reverse Shift Rail 8 Needle Washer 27 Snap Ring 44 Bearing Retainer 6I Detent Ball 9 Thrust Washer 28 3rd Speed Blocker Ring 45 Snap Ring Bearing to Retainer 62 Detent Spring IO Filler Plug 29 Clutch Gear 46 Spring Washer 63 Ist 8 Reverse Shifter Head II Case 30 Pilot Bearings 47 Thrust Washer 64 Roll Pin I2 Shift Selector Shaft 3I Snap Ring 48 Reverse Gear 65 Gasket I3 Seal 32 Shifter Finger 49 Snap Ring 66 Side Cover I4 Needle Bearings 33 Screws 8 L Washers 50 Ist 8 Reverse Synch Sleeve 67 2nd 8 3rd Shift Fork I5 Woodruff Key 34 Clutch Gear Bearing 5I Synchronizer Key Retainer 68 2nd 8 3rd Shift Rail I6 Reverse Idler Shaft 35 Snap Ring Bearing to Gear 52 Synchronizer Keys 69 Detent Ball I8 Reverse Idler Gear 36 Snap Ring Bearing to Case 53 Synchronizer Hub 70 Detent Spring I9 Retainer E Ring 37 Gasket 54 Synchronizer Key Retainer 7I 2nd 8 3rd Shifter Head 20 2nd Speed Gear 38 Clutch Gear Retainer 55 Ist Speed Blocker Ring 72 Roll Pin 2I 2nd Speed Blocker Ring CORVAIR SHOP MANUAL SUPPLEMENT