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Groundsmaster 5900/5910 Hydraulic SystemPage 4 -- 35
PTO Problems
Problem Possible Causes
Cutting decks do not operate.
NOTE: Decks have to be fully lowered and traction
speed needs to be in MOW for decks to operate.
An electrical problem exists (see Chapter 5 -- Electrical
System).
Gear pump is worn or damaged.
One cutting deck motor will not operate. An electrical problem exists (see Chapter 5 -- Electrical
System).
Cutting deck problem exists (see Chapter 8 -- Cutting
Decks).
System pressure to the affected deck motor is low.
Woodruff key on affected deck motor is damaged
(motor rotates but deck belt and blades don’t rotate).
Solenoid valve in deck PTO control manifold is faulty.
Cartridge valve in deck PTO control manifold is
damaged or sticking.
Deck motor or gear pump section is damaged.
All cutting deck motors operate slowly. Engine RPM is low.
Cutting deck problem exists (see Chapter 8 -- Cutting
Decks).
Deck motor or gear pump section is damaged.
Cutting deck stops under load. Relief valve in deck PTO control manifold is
by--passing.
Cutting deck problem exists (see Chapter 8 -- Cutting
Decks).
Deck motor has internal leakage (by--passing oil).
Cutting deck gear pump section is inefficient.
Hydraulic
System