THREE SPEED TRANSMISSION 7 5 Countergeqr AnH R H o plum on either side Slide the sleeve onto the hub aligning Inspect the plate teeth for wear or other damage The the metke made befere disassembly plate and two damper springs are retained t0 the counter NQTEI A groovo around tho Outside of tho gear by three rivets Fig 7A Disassembly is HOI synohronizer hub identifies the end that must be i Omm d d opposite the fork slot in the sleeve when as sembled This groove indicates the end of the REPAIRS hub with a 07 greater recess depth Clutch Keys and Springs NOTE The clutch hubs and sliding sleeves are MAINSHAFT a selected assembly and should be kept together as originally assembled but the keys and two Assembly Fig 6A Springs may bg replaced if WOM Or broken Turn the front of the malnshaft upward Install the following components on the mainshaft Replacement 1 Install the second speed gear with clutching teeth I Mark hub and sleeve so they can be matched upon upward the rear face of the gent will butt against reassembly the flange on the mainshaft 2 Push the huh from the sliding sleeve the keys and 2 Install ei blocking ring with clutching teeth downward the springs may be easily removed over the synchronizing surface of the second speed 3 Place the three keys and twe springs in nesltien One gear All three blocker rings used in this trans on each side of hub so all three keys are engaged mission are identical by both springs The tanged end of each synchronizer 3 Install the second and third synchronizer assembly spring shenld be installed inte different key cavities with the fork slot downward press it onto splines on j 2 Q M I N I sr 1 to l gl L V s i i N I I I 1 1 1 I I I I i t A t 4 r I r S J V I Q st iii S i ii i E I I Y I I l ii iiii S I r Q ll I r i Q 2 i P Mi yolyt I i i i Y T i i i I I I I 7 t I V i ittiii I 3 4 5 6 7 8 9 l0 II I2 I3 I4 I5 I6 I7 Fig 6A Ciutch Gear St Mclinshait Assembiy ExpIoded I Ciutch Gear 5 2 3 S nchronizer AssembI IO Ist Speed Si nchronizer I4 S rin Washer Y P 9 2 Mainshaft Pilot C3 2nd Speed Biocker Ring Assembly I5 Rear Bearing Bearings 76 7 End Speed Gear II Snap Ring I6 Rear Bearing Retainer Snap 3 3rd Speed Biocker Ring 8 Ist Speed Gear I2 Reverse Gear Ring 4 Snap Ring 9 Ist Speed Bioczker Ring I3 Reverse Gear Thrust Washer I7 Snap Ring CORVAIR SHOP MANUAL SUPPLEMENT