Westerbeke WPDS-20 Technical Manual page 84

S.19
washer and install Woodruff key (27) in keyway in tailshaft.
23. If removed for replacement, pre-ss new oil seal (21) into direct drive
plate (15). Press ball bearing (25) into direct drive plate.
24. Place direct drive plate, oil seal and ball bearing assembly on suitable
support and press gear half coupling (14) into oil seal (21) and ball bear-
ing (25) until gear half coupling is seated against ball bearing. Care must
be taken not to damage oil seal during assembly.
25. Align direct drive plate and gear half coupling up with key in reverse gear
tail shaft and press together until ball bearing is seated against thrust
washer (16-1).
26.
Place lockwasher
(19)
over reverse gear tailshaft with tang in keyway in
gear half coupling and thread locknut (18 -1) on reverse gear tailshaft.
27. Install lockwashers and capscrews in holes in direct drive plate and bolt .
to reverse gear housing.
28.
Tighten all capscrews. Tighten locknut
(18-1)
and bend up one tang on
lockwasher (19) over locknut.
29.
Continue with paragraphs 13 through
20.
ASSEMBLE TRANSMISSION TO ENGINE
1.
If front end plate (5) was removed from reverse gear housing (3) or
engine flywheel housing proceed as follows:
a. Replace oil seal (22) or bearing (37) if necessary.
b. Slide engine gear (1) into flywheel housing damper spline.
c. Align mounting holes in front end plate (5) with holes in flywheel
housing and secure with lockwashers and capscrews.
d. After installing on engine, check engine gear f0r runout. Maximum
eccentricity is
.005
inches at pilot roller bearing.
2. Insert two studs three inches long in two opposite bolt holes in front end
plate (5).
3. Check to be certain that pilot roller bearing
(60)
is properly installed in
propeller gear inside gear cas e.
4. Start reverse gear housing (3) over the two studs and slide housing over
engine gear (1) right up against flywheel housing. It may be necessary to
rotate gear case slightly to properly mesh teeth on engine gear and short
pinions in gear case.
5. Install lockwashers and capscrews in holes around flange of housing.
6. Remove the two studs and install remaining lockwashers and capscrews.
Tighten all capscrews.
ASSEMBLY OF REDUCTION GEAR ASSEMBLY TO REVERSE GEAR
HOUSING ASSEMBLY
NOTE: Refer to reduction gear assembly and disassembly procedures.
1. Install two studs 3 1/2 inches long in two opposite holes in· reduction
adapter plate.
2. Position reduction gear assembly over studs with oil drain plug at bottom
and slide onto reduction drive gear.
It
may be necessary to rotate reduc-
tion ring gear slightly to properly mesh gear teeth.
3. Installlockwashers and capscrews around flange of reduction gear housing
and tighten uniformly.