Illus

CLUTCH DISASSEMBLED (1941 TO 1947 MODELS)

4. Spring tension adjusting nuts (three).

5. Spring tension adjusting nut locks (three). See "Footnote."

6. Spring compression collar.

7. Clutch springs (ten).

8. Releasing disc.

9. Sprung disc, to smooth clutch engagement. Friction disc riveted to inner side.

10. Plain steel discs (three). Outside marked.

11. Lined discs (three).

12. Clutch hub nut (left thread).

13. Flat Washer—see Footnote.

Footnote: During the 1947 season, spring tension adjusting nut locks (5) were eliminated and adjusting nuts (4) were superseded by sell locking puts. Flat washer (13) used only when disassembling clutch.

Disassembling Clutch

1941 to 1947 Models

(To Identify Items, Refer to IIlus. 9 and 137)

Remove outer chain guard. Removing nuts (4) allows clutch (Items 2 to 11 inclusive) to come apart as shown in Illus. 137. However, unless springs may need inspection and possibly renewal, it is not necessary to release them. Spring collar (6), springs (7) and outer disc (8) can be removed as an assembly as shown in Illus. 9. This manner of disassembling makes reassembling a much simpler job than when springs are released.

To remove these parts, as an assembly, first obtain a flat washer (13), with approximately the following dimensions: Vs" thick, 1%" outside diameter, and %" center hole. Remove push rod adjusting screw lock nut (3), Illus. 7, and install flat washer over adjusting screw (2), Illus. 7. Then turn lock nut onto adjusting screw, against washer and tighten lock nut until adjusting nuts (4) are free. Bend away nut locks (5), remove nuts (4) and assembly can be pulled off, freeing the other discs. See footnote under Illus. 7.

To remove clutch shell and sprocket, it is first necessary to remove engine sprocket (see paragraph

20 under "Removing Assembled Engine From Chassis For Complete Overhaul," Page 41). Then front chain and clutch sprocket assembly can be taken off.

Clutch hub with back plate is a taper fit on transmission mainshaft and is secured by nut (12) (left thread) and lock washer. To remove clutch hub, see "Removing Clutch Hub/^^^^p^^ ^""

Reassembling Clutch^

Inspect all parts carefully.

If lined discs are not badly worn but are oil-soaked, wash them thoroughly in clean gasoline or solvent and dry with compressed air or heat. If discs are found worn to rivet heads, replace with new lined discs; it is impractical to reline old discs.

If clutch has been badly overheated as a result of slippage, and lined discs are found badly glazed and burned, and/or if clutch springs have shrunk as to length, such parts should be replaced.

Free length of new clutch springs is as follows:

1940 and Earlier Models: 2-7/16"

1941 to 1947 Models: 1-31/64"

Reassemble clutch in the reverse order of disassembly.

1940 and Earlier Models: Before installing and tightening clutch hub nut (9) ton nut (8) snug against flange on outer end of hub nut. Clutch hub nut and lock washer (7) can then be installed and nut securely tightened without compressing clutch springs further. After clutch hub nut has been securely tightened, lock it by upsetting edge of washer (7) into slot in spring collar (11).

1941 to 1947 Models: Be sure steel friction discs are assembled with sides stamped "OUT" facing outward. Also, splineways with anti-rattle devices should be staggered in clutch hub shell.

Be sure the three bearing plate retaining springs (29) are properly seated in their grooves in the three longer threaded studs (26). If springs are not seated in their grooves, or are placed on the short studs without grooves, clutch will not release properly.

All Models: After clutch has been reassembled, adjust clutch spring tension per instructions under "Adjusting Clutch Spring Tension," Page 16. With transmission installed in chassis, check and if necessary, readjust clutch control per instructions under "Checking and Adjusting Clutch Control," Page 15.

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