Harley Davidson DUO-GLIDE 74 OHV. Service manual (1959) — page 7

If bearing housing does not come out with bearing when mainshaft assembly is being removed, slide gear (8 or 8A) along mainshaft until edge of large gear is against bearing housing and drive out housing together with mainshaft. To avoid damage to case, make sure gear is positioned so it does not overlap housing.

Disassemble the mainshaft gear and ball bearing assembly only if inspection shows a need for replacing worn or damaged parts.

Clamp mainshaft in copper-faced vise jaws. Bend ear of lock washer (5) away from flat of nut (4) and remove nut and washer. Bearing (6) and gear (8) may then be removed with the All Purpose Claw Puller, Part No. 95635-46 or an arbor press. If using claw puller, insert center adapter, Part No. 95636-46, into end of shaft to prevent damage to shaft. Bearing and gear are removed separately.

DISASSEMBLING MAIN DRIVE GEAR (FIG. 4D-14)

Position gear box in vise and nail or bolt length of rear chain to bench. Engage chain on sprocket teeth to keep sprocket from turning.

Bend ear of lock washer away from flat of nut and remove sprocket lock nut (1) and washer (2). Nut has left hand thread. Lift oil deflector (3) and chain sprocket (4) off gear. Push main drive gear (5) into

case and withdraw it from top. Thrust washer (6) usually comes out with gear. Remove the 44 roller bearings (7). Be sure all rollers are accounted for and wrap them in paper or cloth. If any of these rollers are lost or if rollers from another bearing become mixed with them, the entire set must be discarded and a new set fitted, even though the old rollers are in serviceable condition.

Do not remove main drive gear oil seal (8) or main drive gear spacer (10) unless inspection shows damage or wear. Complete instructions for removing oil seal and spacer may be found in Section 4D.

CLEANING, INSPECTION AND REPAIR

Clean all parts except gaskets (all gaskets should be replaced) with cleaning solvent and blow dry with compressed air.

Inspect all gears. If teeth are pitted, scored, cracked, chipped or if case hardening is worn through, replace with new gears.

Inspect all bushings, bearing races and shafts. If bent or worn, install new parts. If mainshaft ball bearing (6, Fig. 4D-13) is worn to point where play is obviously too great, install new bearing.

To install main drive gear bearing race (13, Fig. 4D-14), heat case to about 300 degrees and press out old race with arbor press after removing bearing race retaining ring (12). Reheat case and press in new race until flange is seated against case. Install new bearing race retaining ring.