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1
1.
Cam gear bushing
Figure 3-57. Cam Gear Bushing Installed in Crankcase
PINION SHAFT BUSHING IN GEARCASE COVER
1.
See
Figure 3-51.
Using an arbor press, install pinion
shaft bushing (16) in its gearcase cover (17) so that
bushing is flush with cover boss. There is no need to ori-
ent this particular bushing in any specific position of rota-
tion within the gearcase cover bore.
2.
Although the original pinion shaft bushing is not "pinned,"
the replacement bushing must be secured, from possible
rotation within the cover bore, by installation of a dowel
pin. See
Figure 3-58.
(7.14 mm) deep, at top side of boss (side toward top of
gearcase cover), centering the drill bit on the cover bore
circle (hole is drilled half in bushing OD and half in cover
bore ID).
3.
Drive a new dowel pin no more than 0.20 in. (5.1 mm)
below the bushing face. Carefully peen edges of hole to
lock the pin in place.
4.
After you install a new bushing in gearcase cover, line-
ream the bushing to the correct size. See
REAMING.
Bushing Reaming
3-44
Oiling slot must be
at 12 o'clock position
2
2.
Right crankcase half
Drill a No. 31 hole, 0.281 in.
BUSHING
www.PlanDeGraissage.org
3319a
Figure 3-58. Drilling Dowel Pin Hole
CAM GEAR BUSHINGS IN
RIGHT CRANKCASE HALF
1.
Separate two halves of crankcase, if not already accom-
plished. Place right crankcase half on flat surface with
gearcase side upward. Bushing to be reamed must be
oriented as shown in
Figure 3-57.
2.
See
Figure 3-59.
Position
REAMER PILOT (Part No. HD-38871)
side of crankcase half; upper right and lower left indexing
holes in pilot must be placed over dowels in crankcase
half. Insert two bolts (supplied with pilot) through two
remaining holes in pilot, and into threaded holes of
crankcase half. Tighten bolts securely.
3.
Insert the 11/16 in. diameter reamer through pilot hole
and into bushing while turning reamer clockwise. Con-
tinue turning reamer clockwise through bushing until
smooth shank of reamer passes through hole in pilot.
4.
Detach reamer from handle. Pull reamer out opposite
side of crankcase half.
5.
Thoroughly clean right crankcase half, removing all metal
chips/shavings. Blow out all oil passages using com-
pressed air.
CAM GEAR BUSHINGS (EXCEPT REAR INTAKE
BUSHING) IN GEARCASE COVER
1.
See
Figure 3-51.
Bushings (7, 8 and 14) to be reamed
must be installed in gearcase cover (17) as described in
BUSHING INSTALLATION
case cover to right crankcase half (10), which has been
disassembled from left crankcase half, securing with a
minimum of three mounting screws.
Replacement bushing
requires dowel pin hole
CAMSHAFT BUSHING
onto gearcase
on
page
3-43. Attach gear-
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