Westerbeke WPDS-20 Technical Manual page 76

TROUBLE SHOOTING CHART
Chart
3
GEAR INOPERATIVE
DRIVE SHAFT OOES NOT ROTATE WITH
SHIFT LEVER IN FORWARD OR REVERSE
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l
Ch.,(.~
For
1
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1. FAILURE OF PLANETARY ASSEMBLY
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r
r
2. FAILURE OF REDUCTION GEAR
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3 .. FORWARD CLUTCH NOT ENGAGING
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1. I{Crllo\·t" ge'ar case assc:mhly and check for
<ldectin' or damaged parts. l{epL.l.ce defective
or damaged parts.
2.
Remo\'e reduction gear assemhly and check for
defective or damaged parts. Replace defective
or dama,ged parts. Refer
to
reduction gear
serv
ice
manual.
,. Check the follo\\ in).! items:
a.
Improper fOf\\ard clutch .Idjustment.
:\dju.~!
f()f\"lrd clutch .IS ()utiincd undt'r 'ldius!ment.
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4. REVERSE BAND NOT
ENGAGING G EAR CASE
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5. BROK EN OUTPUT SHAFT
REMEDY -------------------------------
h. forward clutch plates "orn. Replace clutch
plate.
4. Check the following items:
a. Improper reverse band adjustmc:nts. ·\djus!
reverse band as outlined under
<.ldj\l~!nlell('
h. R('verse band lining
worn.
I{Cf,lae<: linin.!!.
c. Cracked ears or hent or dama).!cd link<.lge
parts. i{el,lace dcfectivc lIIatcrial.
5. Clled: for hroken output shaft. l{cpldCC: de-
fCClin' shaft.
S .11
NOTE: Disassembly need be carried out only as far as is necessary to correct
those difficulties which interfere with proper marine gear operation.
REMOVAL OF REDUCTION GEAR ASSEMBLY FROM REVERSE GEAR
HOUSING IF INSTALLED
NOTE: Remove the reverse gear
before draining oil, to avoid
1. Remove starter motor
with reduction gear attached
fouling the bilges.
as a complete
2. Disconnect propeller half coupling and slide back approximately 4 inches.
3. Remove capscrews securing reverse gear to bellhousing.
unit
4. Strike gear half coupling flange with soft mallet to break reverse gear from
bellhousing. Slide entire reverse and reduction gear streight back approxim-
ately 3 inches until reverse gear clears bellhousing and lift units clear of
engine.
(Refer to "Reduction Gear" section of manual for disassembly and assembly of
reduction unit.)