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Groundsmaster 5900/5910 Hydraulic SystemPage 4 -- 39
Which Hydraulic Tests Are Necessary?
Before beginning any hydraulic test, identify if the prob-
lem is related to the traction circuit, PTO (mow) circuit,
lift circuit or steering/engine cooling fan circuit. Once the
faulty system has been identified, perform tests that re-
late to that circuit.
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,Rear
Traction Circuit (RV) Relief Pressure, Traction Circuit
Reducing Valve (PR) Pressure and/or Counterbalance
Pressure Tests.
2. If a PTO (mow) circuit problem exists, c onsider per-
forming one or more of the following tests: Cutting Deck
Circuit Pressure.
3. If a lift circuit problem exists, consider performing
one or more of the following tests: Lift/Lower Circuit Re-
lief Pressure, Counterbalance Pressure and/or Gear
Pump (P3) Flow Tests.
4. If a steering/engine cooling fan circuit problem ex-
ists, consider performing one or more of the following
tests: Steering Circuit Relief Pressure, Steering Cylin-
der Internal Leakage and/or Gear Pump (P3) Flow
Tests.
Hydraulic
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