Cutting Unit Operating Problems - Toro Greensmaster 3150 Service Manual

Cutting Unit Operating Problems

Problem
Cutting units run (but should not) when raised.
Cutting units do not run when lowered with the
functional control lever in the MOW position.
Cutting units will not raise.
Greensmaster 3150
Possible Causes
Joystick relay (K3) is faulty.
Mow relay (K4) is faulty.
Mow switch is out of adjustment or faulty.
A hydraulic problem exists (see Chapter 4 -- Hydraulic
System).
Wiring to run/mow/backlap circuits components is
loose, corroded or damaged (see Electrical Schematic
and Circuit Diagrams in Chapter 9 -- Foldout
Drawings).
Fuse block or fuse is faulty.
Solenoid coil S1R1 is faulty.
Mow switch and/or mow relay (K4) is faulty.
Raise or lower switch and/or joystick relay (K3) is
faulty.
A hydraulic problem exists (see Chapter 4 -- Hydraulic
System).
Wiring to raise circuit components is loose, corroded or
damaged (see Electrical Schematic and Circuit
Diagrams in Chapter 9 -- Foldout Drawings).
Fuse block or fuse is faulty.
Diode D3 is open.
Raise switch is faulty.
Raise relay (K6) is faulty.
Solenoid coil S3 and/or S2 is faulty.
A hydraulic problem exists (see Chapter 4 -- Hydraulic
System).
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