Toro Reelmaster 3100-D Service Manual page 104

Precautions for Hydraulic Testing (continued)
Hydraulic System: Testing
1. Clean machine thoroughly before disconnecting or disassembling any
hydraulic components. Always keep in mind the need for cleanliness when
working on hydraulic equipment. Contamination can cause excessive wear
or binding of hydraulic components.
2. Before testing, check control linkages for improper adjustment, binding or
broken parts.
3. All hydraulic tests should be made with the hydraulic fluid at normal operating
temperature.
4. Put metal caps or plugs on any hydraulic lines left open or exposed during
testing or component removal.
5. When using hydraulic tester (pressure and flow), the inlet and the outlet
hoses must be properly connected and not reversed to prevent damage to
the hydraulic tester or components.
6. Install hydraulic fittings finger tight and far enough to make sure that they are
not cross-threaded before tightening them with a wrench.
7. Position tester hoses to prevent rotating machine parts from contacting and
damaging the hoses or tester.
8. After connecting test equipment, check fluid level in the hydraulic tank to
make sure that fluid level is correct.
9. When using hydraulic tester (pressure and flow), open tester load valve
completely before starting engine to minimize the possibility of damaging
components.
10. The engine must be in good operating condition. Use a phototac when
performing a hydraulic test. Engine speed can affect the accuracy of the
tester readings. Check actual speed of the pump when performing hydraulic
flow tests.
11. If a traction circuit problem exists, consider performing one or more of the
following tests: Charge Pressure Test, Wheel Motor Efficiency Test, and/or
Piston Pump/ Hydrostat (P3) Flow and Relief Valve Tests.
12. If a cutting (mow) circuit problem exists, consider performing one or more of
the following tests: Circuit Pressure Test, Deck Motor Efficiency/Case Drain
Test, Manifold Relief Pressure Test, and/or Gear Pump (P1) Flow Test.
13. If a steering or lift/sidewinder circuit problem exists, consider performing
one or more of the following tests: Gear Pump (P2) Flow Test, Relief Valve
Pressure Test, and/or Steering Control Valve and Steering Cylinder Test.
Page 5–28 Reelmaster ® 3100-D/3105-D
20252SL Rev A