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parts before disassembling. This precaution can save needless gauging and adjusting when reassem-bling.

G. Remove sprocket (Item 42) using manufacturer's wrench number 12731-29. It will be necessary to strike wrench with a hammcr to loosen nut (Item 44).

Remove sprocket from taper by giving it a light but sharp rap with a hcmmer, near outer edge, being careful not to strike teeth.

H. Remove transmission side cover (Item 40); all gears, shafts, etc., are now free to be removed from open side of case.

Notę: Do not remove clutch gear oil seal and bear-ing retaining washer (Items 70 and 71—1941 and later only) unless inspection shows them damaged or worn.

> Removing Clutch Hub

Remove clutch hub nut (Item 74). On 1940 models use manufacturer's wrench number 12745-26 with adapter number 12745-26A; on 1941 and later models use wrench number 12745-41.

1940    model: Clutch hub can be removed from taper by giving it a light but sharp rap with a hamm^& and soft punch, striking close to center but beirig careful not to strike bearing.

1941    and later models: Clutch hub is a press fit on splined end of clutch gear. Puller number 12022-41 is needed to remove it.

Inspection of Parts

Inspect all parts and determine which must be renewed. Check all gears for extent of tooth wear; also inspect all bushings and bearing races.

Give especially close attention to possibly battered or rounded condition of engaging dogs on shifter clutches and clutch gear and engaging slots in other gears. This condition results from shifting abuses or possibly from poorly adjusted clutch that does not release fully.

Damaged engaging dogs and slots try to creep otit of engagement under steady driving load. This creeping action develops tremendous side pressure that finally results in serious damage to shifting mechamsm and all thrust points along the mainshaft assembly. Therefore, in doing a thorough and de-pendable transmission overhaul, it is of prime im-portance that all gears and shifter clutches with badly rounded engaging dogs and slots be replaced with new.

Installing Clutch Gear

A.    Assuming that oil seal (Item 71) and bearing retaining washer (Item 70) are already assembled in case, install roller bearing end washer (Item 17) in roller race next. Assemble rollers (Item 16) in roller race after applying sufficient grease to race to hołd rollers in place.

B.    Insert oil seal tool (manufacturer's tool number 12747-41) through oil seal from the outside so that it will be in place to meet clutch gear when it is in-serted through bearing from the inside. It is necessary that this oil seal tool be used to facilitate assembly and avoid damaging oil seal. Assemble thrust bearing race (Item 14) and retainer and balls (Item 15) on clutch gear. Now insert clutch gear through bearing from inside of case. Be surę end of

gear is engaged with oil seal tool before pushing it through seal.

Adjusting Mainshaft Endplay

A.    Install mainshaft in case with mainshaft spacer (Item 24), thrust washer (Item 35) and spacing collar (Item 36) in place.

B.    Install roller bearings (Item 37) in side cover bearing race, holding them in place by means of light coat of grease.

C.    Install side cover and gasket on transmission case. In checking endplay, it is important to tighten cover screws and stud nuts just as tight as in finał assembly; otherwise endplay in finał assembly will not be the same as this check shows. Check endplay as indicated in Illustration 53; it should be .003" to .005". Increase or decrease endplay as necessary by fitting mainshaft spacer (Item 24) of reąuired thickness.

D.    After correct mainshaft endplay has been established, remove mainshaft from case and set aside spacer washer selected, to be surę it goes into finał assembly.

Adjusting Endplay of Low and Second Gears Between Retaining Bracket and Transmission Side Cover

A.    Assemble only the following parts on mainshaft: From left (clutch) end—low gear end thrust washer (Item 32), low gear (Item 31), endplay adjusting washer (Item 30), second gear (Item 29), mainshaft spacer (Item 24); from right (sprocket) end— thrust washer (Item 35) and spacing collar (Itetn 36).

B.    Install roller bearings in side cover and install gasket and cover on case. Tighten cover just as tight as in finał assembly.

C.    Check endplay of low and second gears between sidecover (Item 40) and second gear retaining bracket (Item 26), as indicated in Illustration 53. Measure by means of thickness gauge inserted between second gear retaining bracket and second gear. Endplay should be .005" to .007". Ad just as necessary by fitting endplay adjusting washer (Item 30) of reąuired thickness.

After correct endplay. adjustment has been at-tained, remove mainshaft assembly from transmis-sion. Be surę selected endplay washer remains with the assembly.

Assembling Transmission

After mainshaft spacer (Item 24) and endplay adjusting washer (Item 30) in their reąuired thick-nesses have been selected, complete assembly of transmission can proceed, reversing order of dis-assembly.

If new shifter~clutches (Items 25 and 34) are reąuired, see that they fit free on mainshaft and slide on shaft splines without binding. Shifting will be difficult unless these parts work freely.

When assembling shifter cam, two things must be watched very closely: First, shifter finger rollers mt&t be in place on shifter fingers; second, shifter cam gear and shifter lever gear must be correctly timed. Smali gear has one tooth chamfered at end. This tooth must engage with space marked "3" between teeth of large gear. See Illustration 54.