Toro 02740 Operator's Manual page 64

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FAULT
Lack of steering
Lack of transmission
drive
Excessive noise in
hydraulic system
After initial satisfactory
operation machine loses
power.
TROUBLE SHOOTING
POSSIBLE CAUSE
Defective steering valve
Defective hydraulic cylinder
Damaged steering hose
Parking brake engaged
Low oil level
Incorrect oil used
Defective travel pedal linkage
Defective transmission pump
Transmission relief valve open
Broken drive coupling
Transmission filter blocked
Faulty pump
Faulty motor
Air leaking into system
Suction strainer blocked or damaged
Excessive oil viscosity due to cold
conditions
Low relief valve setting
Low hydraulic oil level
Worn pump or motor
Low hydraulic oil level
Incorrect oil viscosity
Oil filter element blocked
Faulty pressure relief valve
Overheating
Leaks on suction hose
REMEDY
Service or replace steering valve
Service or replace hydraulic cylinder
Replace defective hose
Release parking brake
Fill reservoir to correct level
Drain reservoir and refill with correct oil
Check linkage and replace defective parts
Have the transmission pump overhauled by
your authorised dealer
Close relief valve, refer to
MAINTENANCE - TOWING THE
MOWER
Replace drive coupling
Replace transmission filter
Identify noisy pump and service or replace
Identify noisy motor and service or replace
Tighten or replace hydraulic fittings
particularly in suction lines
Clean and replace suction strainer or renew
as necessary
Allow system to warm up
Have relief valve cleaned and pressure
checked. Consult your authorised dealer
Fill hydraulic oil reservoir to correct level
Replace as necessary
Fill hydraulic oil tank to correct level
Renew oil in hydraulic tank with hydraulic
oil of correct viscosity grade, refer to
SPECIFICATIONS
Change filter element
Have relief valve cleaned and pressure
checked. Consult your authorised dealer
Check cylinder to bottom blade adjustment.
Reduce work rate i.e. increase height of cut
or reduce forward speed
Incorrect hydraulic oil grade, refer - Problem
'Hydraulic Oil System Overheating'
Check and tighten fittings. Replace hose if
necessary
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