Deck Motor Internal Leakage Test
NOTE:Testonlyonedeckatatime.Decksnotbeing
testedshouldbeintheraisedpositionsothedeckwill
notoperatewhenthePTOisengaged.
3.StarttheengineandengagethePTOforexactly15
seconds at full throttle, then disengage the PTO and
stoptheengine.
1.
andrightdecksarepoweredinseriesbythesamecir-
cuit,thereforeonedeckcouldaffecttheother.
Determinewhichdeckmotoristurningslow.Theleft
4.Measuretheamountofoilinthecontainer.Multiply
theamountcollectedby4togetthegallonsperminute
flowdischargedfromthecasedrainline.Iftheflowex-
ceeds1.5GPM,thedeckmotorshouldberepairedor
replaced.
2.
To prevent deck blades from rotating, remove one
outerbladefromthedecktobetestedandinstallalong-
erblade(P/N29--5530)fromaGroundsmaster72inch
deck. Put the front cutting edge of the longer blade
againstthedeckhousing(Fig.15B).
NOTE:Ifonemotorshowsexcessivecasedrainflow,
othermotorsmayalsobeinasimilarcondition.Failure
totestallthreemotorsmayleadtorepeatfailures.
DANGER
Make sure other two decks not being tested
are in the raised position. Blades on the other
decks will rotate if in the lowered position
when PTO switch is engaged. To prevent seri-
ous personal injury or death, keep clear of ro-
tating blades. Other blades on deck being
tested will rotate if belt on spindle with longer
blade breaks or slips.
LONGER BLADE
(Front edge against
deck housing)
3.
Remove the case drain line (smallest of the three
lines)fromthedeckmotor(Fig.15C).
Figure15B
4.
Connectaflowmeterinlinewiththecasedrain(oil
flowwillbeawayfromthemotor).
5.
Withtheotherdecksintheraisedposition,startthe
2
engine and engage the PTO.Move the throttle to full
speed position andnotetheoilflowexiting themotor
throughthecasedrainline.Iftheflowexceeds1.5GPM,
thedeckmotorshouldberepairedorreplaced.
NOTE:Ifonemotorshowsexcessivecasedrainflow,
othermotorsmayalsobeinasimilarcondition.Failure
totestallthreemotorsmayleadtorepeatfailures.
1
Alternate Deck Motor Test
(Ifaflowmeterisnotavailable)
1.
Dosteps1--3asdescribedabove,exceptdisconnect
Figure15C
thecasedrainlinefromthebulkheadinsteadofthemo-
tor.Putacaponthebulkheadfitting.
1.
Deck motor
2. Case drain line
2.
Putthecasedrainlinefromthemotorintoa5gallon
containerandsecurethelineinplace.
Testing
Groundsmaster580--D
Page 4 -- 28.4 Rev.F
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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| Document Type | Service Manual |
| Language | English |
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