Toro 10176SL Service Manual Models 30448 30446 Groundsmaster 4000 4010 D D Preface

Which Hydraulic Tests Are Necessary?
2.  If a  cutting (mow)  circuit problem exists,  consider
performing one or more  of the following tests: Cutting
Deck Circuit  Pressure, PTO  Relief Pressure,  Cutting
Deck Motor Case Drain Leakage  and/or Cutting Deck
Gear Pump Flow Tests.
Before beginning any hydraulic test, identify if the prob-
lemis related to thetraction circuit,cutting (mow)circuit,
lift circuit, steering circuit or engine  cooling fan circuit.
Once the  faulty system  has been  identified, perform
tests that relate to that circuit.
3.  If a  lift circuit problem  exists, consider  performing
one or more of the following tests: Lift/Lower Circuit Re-
lief Pressure and/or Steering and Lift/Lower Gear Pump
Flow Tests.
1.
If a traction circuit problem exists, consider perform-
ing one or more of the following  tests: Traction Circuit
Charge  Pressure,  Traction  Circuit   Relief  Pressure,
Counterbalance Pressure,  Rear Traction Circuit  (RV)
Relief Pressure, Traction Circuit Reducing  Valve (PR)
Pressure and/or Piston (Traction) Pump Flow Tests.
4.  Ifasteering  circuit problem exists, consider perform-
ing one or more of the following tests: Steering Circuit
Relief  Pressure, Steering  Cylinder  Internal  Leakage
and/or Steering and Lift/Lower Gear Pump 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.
5.  If a engine cooling fan circuit problem exists, consid-
er performing one or more of the following tests: Engine
Cooling Fan Circuit and/or Engine Cooling Fan Circuit
Gear Pump Flow Tests.
Groundsmaster 4000--D/4010--D
Page 4 -- 37
Hydraulic System
Product Specification
CategoriesLawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals
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