Westerbeke WPDS-20 Technical Manual page 81

S.16
INSPECTION
All parts should be thoroughly cleaned before inspection. Parts showing excessive
wear should be replaced.
1. Ball and roller bearings should be examined for indication of corrosion
and pitting on balls or rollers and races.
2. Long and short pinion bushings should be examined for wear.
3. Pinion shafts should be examined for wear or "brinellingll.
4. Long and short pinion spacers should be examined for wear.
5. Long and short pinion bore diameters should be examined for wear.
6. All gear teeth should be examined for Ilpitch line pittingll, unever wear
pattern or excessive wear.
7. All shafts should be examined for wear on splines and shoulders.
8. Clutch plates should be examined for flatness, roughness, indicating of
excessive heating and wear or peening of driving lugs.
9. Clutch plate carrier should be examined for wear and peening of lugs and
splines.
10. Examine all oil seals for rough or charred lips.
11. Reverse band links, pins, etc. should be examined for wear or bending.
12. Reverse band lining should be examined for wear.
NOTE: Lining should be replaced before rivets come in contact with gear case.
13. Gear case should be examined for wear from reverse band linking, short
or long pinions wearing into inside faces or wear in clutch plate slots on
threaded end.
14. Screw collar and finger assembly should be examined for wear.
15. Pressure plate should be examined for wear.
16.
All old gaskets should be replaced.
17. Operating sleeve assembly should be examined for wear.
18. Engine gear should be examined for wear on oil seal surfaces, case roller
bearing race, pilot bearing race and gear teeth for Ilpitch line pittingll,
uneven wear or excessive wear.
NOTE: When uneven gear teeth wear has been noticed, check engine gear for
eccentricity. Maximum eccentricity at pilot bearing race is . 005 inches.
19. Where special vibration dampers are used as flexible couplings, check
springs and splines for wear.
ASSEMBL Y OF GEAR CASE
1.
If
pinion gears (45) and (46) bushings (21), and pmlOn shafts (42) were
removed from gear case (41), assembled as follows:
a. Insert dummy shaft into long pinion (44).
NOTE: Use same dummy shaft as used in disassembly.
b. Insert four bushings (21) equally spaced around dummy shaft to center
shalt in gear; then assemble remaining bushings.
NOTE: Smear dummy shaft with cup grease to prevent bushings from dropping
out. Install bushing spacer (56) in gear next to first row of bushings.
c. Lay gear case (41) on side and insert long pinion (44) in case to align
with hole in outer row.