Cutting Unit Operating Problems - Toro Reelmaster 3550-D Service Manual

Cutting Unit Operating Problems

Problem
Cutting units run (but should not) when raised.
Cutting units do not run when lowered with the
mow/transport switch in the MOW position.
Cutting units will not raise.
Cutting units will not lower.
Reelmaster 3550−D/3555−D/3575−D
Possible Causes
The mow control manifold proportional relief valve
(PRV) solenoid coil or circuit wiring is faulty.
A hydraulic problem exists (see Chapter 5 − Hydraulic
System in this manual).
Turn around switch or circuit wiring is faulty.
(RM 3555−D/3575−D).
The TEC Controller is faulty.
Fuse(s) is (are) faulty (other electrical components
most likely affected as well).
Engine temperature is high (above 220°F (105°C) or
engine temperature sender or circuit wiring is faulty.
The transport/mow switch is out of adjustment or the
transport/mow switch or circuit wiring is faulty.
The turn around switch is out of adjustment or the turn
around switch or circuit wiring is faulty
(RM 3555−D/3575−D).
The mow control manifold proportional relief valve
(PRV) solenoid coil or circuit wiring is faulty.
A hydraulic problem exists (see Chapter 5 − Hydraulic
System in this manual).
The TEC Controller is faulty.
Fuse(s) is (are) faulty (other electrical components
most likely affected as well).
Raise switch in joystick assembly is faulty or raise
switch circuit wiring is faulty.
Lift control manifold solenoid valve coil(s) (S1, S3
and/or S4) or circuit wiring is faulty.
A hydraulic problem exists (see Chapter 5 − Hydraulic
System in this manual).
The TEC Controller is faulty.
Fuse(s) is (are) faulty (other electrical components
most likely affected as well).
Lower switch in joystick assembly is faulty or lower
switch circuit wiring is faulty.
Lift control manifold solenoid valve coil(s) (S1, S2, S3
and/or S4) or circuit wiring is faulty.
A hydraulic problem exists (see Chapter 5 − Hydraulic
System in this manual).
The TEC Controller is faulty.
Page 5 − 17 Electrical System