Toro 10178SL Service Manual Groundsmaster 4300 D Preface Publication

Which Hydraulic Tests Are Necessary?
2.  If a  cutting (mow)  circuit problem exists,  consider
performing one  or more  of the following  tests: Relief
Valve (PRV1) and (PRV2) Pressure,  Gear Pump (P1)
and (P2) Flow and/or Deck Motor Efficiency Tests.
Before beginning any hydraulic test, identify if the prob-
lemis related to thetraction circuit,cutting (mow)circuit,
lift circuit or steering circuit. Once the faulty system has
been identified, perform tests that relate to that circuit.
3.  If a  lift circuit problem  exists, consider  performing
oneormoreofthefollowingtests:LiftReliefValve(PRV)
Pressure, Gear Pump (P4) Flow and/or Lift Cylinder In-
ternal Leakage Tests.
1.
If a traction circuit problem exists, consider perform-
ing one or more of the following  tests: Traction Circuit
Relief Valve  (R3) and (R4)  Pressure, Traction Circuit
Charge Pressure, Gear Pump (P3) Flow, Front Wheel
Motor Efficiency  and/or Piston  (Traction) Pump  Flow
Tests.
4.  Ifasteering  circuit problem exists, consider perform-
ing one or more  of the following tests: Steering Relief
Valve (R10) Pressure, Steering Cylinder Internal Leak-
age and/or Gear Pump (P3) Flow Tests.
IMPORTANT: Refer to  Traction Circuit Component
Failure in  the General  Information section of  this
chapter for information regarding the importance of
removing contamination from the traction circuit.
Groundsmaster 4300--D
Page 4 -- 33
Hydraulic System
Product Specification
CategoriesLawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals
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- 255 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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