Toro 08159SL Groundsmaster 5900 5910 Service Manual

Procedure for Gear Pump (P3) Flow Test
Make sure hydraulic oil is at normal operating tem-
perature by operating the machine for approximately 10
minutes. Make sure the hydraulic tank is full.
9.  If the measured pump flow is lower than 12.5 GPM
LPM) or a pressure of 1000 PSI (69 bar) could not
be obtained, check for restriction  in gear pump intake
line. If intake line is  not restricted, remove gear pump
and repair or replace pump (P3) as necessary.
(47.3
1.
2.
decks lowered and off. Make sure engine is off and the
parking brake is applied. Raise hood.
Park machine  on  a level  surface with  the cutting
10.Remove
hosetogearpump(seeHydraulicHoseandTubeInstal-
lationintheGeneralInformation   sectionofthischapter).
tester  from machine.  Connect  hydraulic
11.
needed.
Check oil  level in hydraulic  reservoir and adjust  if
CAUTION
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.
3.
Disconnect outlet hose from gear pump section (P3)
(Fig. 43).
IMPORTANT: Make sure  that the oil flow  indicator
arrow on the flow gauge is showing that the oil will
flow from the pump, through the tester and into the
hydraulic hose.
2
4.
Install tester with pressure gauges and flow meter in
series between the gear pump section (P3) and the dis-
connected hose.  Make sure the tester  flow control
valve is open.
1
5.
speed. Check for hydraulic leakage and correct before
proceeding with test.
After installing  tester, start  engine and  run at idle
Figure 43
1.
Pump section (P3)
2.
Outlet hose
IMPORTANT: The pump is a positive displacement
type.  If   pump  flow  is  completely   restricted  or
stopped, damage to the pump, tester or other com-
ponents could occur.
6.
Operate the engine  at full speed (2750 RPM).   DO
NOT engage the cutting decks.
7.
While watching tester pressure gauges, slowly close
flow control valve on the tester until 1000 PSI (69 bar)
is obtained on gauge. Verify that engine speed contin-
ues to be correct (2750 RPM). Record test results.
GAUGE READING TO BE:
A pump  in  good condition  should have  a flow  of
approximately 14 GPM  (53 LPM) at 1000  PSI (69
bar).
8.
Open tester flow control valve and stop engine.
Groundsmaster 5900/5910
Page 4 -- 59
Hydraulic System
Product Specification
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- 374 pages
Document TypeService Manual
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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