Toro Pro Sweep 07066, Service Manual

Page: 35 / 103

Pro Sweep Hydraulic System Page 3 -- 19
Problem Possible Cause
Sweep hopper will not dump. Remote transmitter dump sequence not followed.
Control module has gone to time--out due to inactivity of remote
transmitter.
Sweeper is in the offset position.
Sweeper not in transport height when remote transmitter dump se-
quence was entered.
Hydraulic hose(s) to tow vehicle are not connected (brush motor
and offset cylinder affected as well).
Tow vehicle hydraulics are not engaged to Pro Sweep (brush motor
and offset cylinder affected as well).
Hydraulic oil level in tow vehicle reservoir is low.
Lift cylinder is binding.
Sweeper frame components are binding.
Check valve fitting on lift cylinder is faulty.
An electrical problem exists that prevents control manifold solenoid
coil SV3 from being energized (see Troubleshooting in Chapter 4 --
Electrical System).
Control manifold solenoid cartridge SV3 is faulty.
Control manifold solenoid cartridge SV2 is faulty.
Control manifold relief valve RV is leaking or faulty.
Control manifold cartridge EC is faulty.
Hydraulic system on tow vehicle is malfunctioning (brush motor and
offset cylinder affected as well).
An electrical problem exists that prevents operation of control mod-
ule or remote transmitter (see Troubleshooting in Chapter 4 -- Elec-
trical System).
Lift cylinder is damaged.
Sweeper raises, but will not stay up.
NOTE: Control manifold cartridge
cannot provide an absolutely perfect
seal. The dump hopper may eventu-
ally lower if left in the raised position.
Use lift cylinder safety support when
dump hopper is raised.
Control manifold SV2 cartridge is leaking or faulty.
Hydraulic System