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Groundsmaster 3505--DHydraulic System Page 4 -- 42
Deck Motor Efficiency -- Case Drain Test (Using Tester with Pressure Gauges and Flow
Meter)
TO HYDRAULIC
FROM HYDRAULIC
TO HYDRAULIC
LEFT
RIGHT
REAR
DECK MOTOR
DECK MOTOR
DECK MOTOR
MANIFOLD PORT (D1)
MANIFOLD PORT (M1)
MANIFOLD PORT (M2)
MEASURING
CONTAINER
Working Pressure
Low Pressure
Return or Suction
Flow
TESTER
HYDRAULIC
# TOR4077
NOTE: Over a period of time, a deck motor can wear in-
ternally. A worn motor may by--pass oil to its case drain
causing the motor to be less efficient. Eventually,
enough oil loss will cause the deck motor to stall under
heavy cutting conditions. C ontinued operation with a
worn, inefficient motor can generate excessive heat,
cause damage to seals and other components in the hy-
draulic system and affect quality of cut.
NOTE: One method to identify a possibly bad deck mo-
tor is to have another person observe the machine while
mowing in dense turf. A bad motor will run slower, pro-
duce fewer clippings and could cause a different ap-
pearance in the turf.