Mow Circuit Problems
Problem
Possible Cause
Cutting deck will not operate.
Electrical problem exists (see Chapter 5 -- Electrical System).
NOTE: To engage the mow circuit,
the seat must be occupied, the trac-
tion speed must be in the Low
Gear pump or its coupler is damaged (NOTE: other hydraulic circuits
impacted as well).
(4WD)
position and the PTO switch
needs to be ON.
One cutting deck section will not op-
erate.
Electrical problem exists (see Chapter 5 -- Electrical System).
System pressure to the affected deck is low.
Woodruff key on affected deck motor is damaged.
Solenoid valve (S) in PTO manifold for affected deck is faulty.
Cartridge valve in PTO manifold for affected deck is damaged or
sticking.
Deck motor or gear pump section is damaged.
NOTE: If appropriate, transfer a suspected damaged deck motor to
another cutting deck section. If problem follows the motor, motor
needs repair or replacement.
All cutting deck sections operate
slowly.
Engine RPM is low.
Deck motor or gear pump sections are damaged.
Cutting deck section stops under
load.
Relief valve in PTO manifold for affected deck is by--passing.
Deck motor has internal leakage (by--passing oil).
Cutting deck gear pump section is worn or damaged.
Hydraulic System
Page 4 -- 32
Groundsmaster 4100--D/4110--D
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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| Tags | Toro Groundsmaster 10177SL, Toro Groundsmaster 30447, Toro Groundsmaster 30449, Toro Groundsmaster 4100, Toro Groundsmaster 4110 D |
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| Document Type | Service Manual |
| Language | English |
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