Procedure for High Flow Hydraulics Kit (If
Equipped) Gear Pump Flow and System Relief Pres-
sure Test
7. With High Flow Kit switch still in the ON position,
watch tester pressure gauges while slowly closing flow
control valve on the tester until 1500 PSI (103.4 bar) is
obtained on gauge. Verify that engine speed continues
to be 3600 RPM. Record flow meter reading.
1.
Make sure hydraulic oil is at normal operating tem-
perature by operating the vehicle for approximately ten
(10)
minutes.
GAUGE READING TO BE: A pump in good condi-
tion should have a flow of approximately 7.3 GPM
2.
Parkvehicleonalevelsurface,raiseandsupportbed
(27.6
LPM) at 1500 PSI (103 bar).
(ifinstalled),shutengineoffandapplytheparkingbrake.
After turning engine off, operate all hydraulic controls to
relieve hydraulic system pressure.
8. Open tester flow control valve, release accelerator
pedal to allow engine to return to low idle, turn High Flow
Kit switch OFF and stop engine.
CAUTION
9. If the measured pump flow is lower than 6.1 GPM
(23.1
LPM)orapressureof1500PSI(103bar)couldnot
be obtained, inspect for:
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.
A. Worn or stuck relief valve (SVRV).
B. Pump suction line restriction.
C. Gear pump needs to be repaired or replaced.
IMPORTANT: Make sure that the oil flow indicator
arrow on the flow meter is showing that the oil will
flow from the pressure coupler, through the tester
and into the return (tank) coupler (Fig. 24).
10.To
test High Flow Kit system relief pressure:
A. Make sure flow control valve on tester is fully
open.
3.
With the engine off, install tester with pressure
gauges and flow meter in series between the quick dis-
connect couplings at the rear of the vehicle. Make sure
the tester flow control valve is open.
B. Start engine and depress accelerator pedal so
engine is running at high idle (3600 RPM). Turn High
Flow Kit switch ON.
4.
necting the tester.
MakesuretheHighFlow Kitreservoir isfullaftercon-
IMPORTANT: Close flow control valve on tester
only enough to get a system relief pressure read-
ing.
CAUTION
C. Watchpressuregaugecarefullywhileslowlyclos-
ing the tester flow control valve until the relief valve
opens.
Theenginemustberunningtoperformhydraulic
tests. To guard against possible personal injury,
engage parking brake and keep clothing, hands,
feet, face and other parts of the body away from
moving vehicle parts while testing.
D. System pressure should be approximately 2000
PSI (137.9 bar) as the relief valve lifts.
E. Open tester flow control valve, release accelera-
tor pedal to allow engine to return to low idle, turn
High Flow Kit switch OFF and stop engine. Record
test results.
5.
After installing tester, start engine and run at idle
speed. Turn High Flow Kit switch ON and check for hy-
draulic leakage from connections. Correct before pro-
ceeding with test.
11.
Ifrelief pressure isincorrect, inspect foraworn,stuck
or damaged relief valve (SVRV) in control manifold (see
Hydraulic Manifold (High FlowHydraulics Kit)intheSer-
vice and Repairs section of this chapter).
6.
Depress accelerator pedal so engine speed is 3600
RPM. Verify speed with a phototac.
12.Remove
tester from quick disconnect couplings.
Workman HD Series
Page 9 -- 29
Hydraulic System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro 09173SL |
| Download File |
|
| Document Type | Service Manual |
| Language | English |
| Product Brand | Toro. 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)
Canada 1-888-225-4886 USA 1-888-384-9939, Lawn Mower |
| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
(0 votes, average: 0 out of 5)