Toro 04130SL Rev C Service Manual Multi Pro 5700 D Preface Publication

Pulse Width Modulated (PWM) Valve Flow Test
1.
perature by operating the machine for approximately 10
minutes. Make sure the hydraulic tank is full.
Make sure hydraulic oil is at normal operating  tem•
10.Using the application rate switch, increase the spray
rate slightly while monitoring the flow tester. Check  for
hydraulic leakage  and correct before  proceeding with
test.
2.
Park machine on  a level surface,  stop engine, en•
gage parking brake, and  remove key from the ignition
switch. After  turning  engine off,  operate all  hydraulic
controls to relieve hydraulic system pressure.
11.With the engine still running at high idle, increase the
spray rate with the application rate switch while monitor•
ing the flow  tester. As the spray rate  is increased, hy•
draulic flow should increase as well. At maximum spray
rate, hydraulic flow on the tester should approach spray
motor circuit  hydraulic flow  previously  tested and  re•
corded. If hydraulic flow does not increase correctly, ei•
ther the the circuit wiring to the PWM Valve solenoid or
the PWM Valve is faulty.
3.
Perform the Gear Pump Flow  Test. Make sure that
spray motor circuit hydraulic flow has been tested  and
recorded.
CAUTION
12.Disconnect
tester from  PWM Valve  CF port  fitting
and hydraulic hose. Reconnect hose to fitting.
Prevent personal injury and/or damage to equip•
ment. Read all WARNINGS, CAUTIONS, and Pre•
cautions for Hydraulic Testing  at the beginning
of this section.
13.If the machine has a Pro Control System installed, re•
connect the Pro Control console computer.
4.
Disconnect hydraulic hose from the CF port fitting in
1
the PWM Valve (Fig. 22).
2
IMPORTANT: Make  sure that the  oil flow indicator
arrow on the flow meter is showing that the oil will
flow from the PWM Valve CF port, through the tester,
and into the hydraulic hose.
5.
Install tester with pressure gauges and flow meter in
3
series with the CF port fitting and the disconnected hy•
draulic hose. Make sure the tester flow control valve
is fully open.
6.
Make  sure that  spray tank  has  sufficient fluid  for
agitation. Make sure that spray pump is turned off.
Figure 22
1.
2.
PWM Valve
CF port fitting
3.
PWM Valve solenoid
7.
disconnect the Pro Control console computer.
If the machine has  a Pro Control System installed,
8.
(3050
Start engine  and move  throttle to  high idle  speed
– 3150  RPM). The  flow  meter should  indicate
little, if any, hydraulic  flow (less than 1 GPM) from  the
PWM Valve CF port.
A.  If higher flow exists, stop engine, disconnect the
PWM Valve solenoid connection  from the machine
harness  and retest.  If  higher flow  still  exists,  the
PWM Valve should be replaced. If flow decreases to
less than 1 GPM after solenoid is disconnected, in•
spect spray system electrical components  and wir•
ing before continuing PWM Valve flow test.
9.
Make  sure that  spray  booms are  off.  Turn  spray
pump and tank agitation on.
Hydraulic System
Page 4 – 24
Multi Pro 5700–D
Product Specification
CategoriesLawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals
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- 212 pages
Document TypeCatalog
LanguageEnglish
Product BrandToro. Customer Service Representatives are available by phone: Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
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