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.
