Toro Reelmaster 5510 Series, Service Manual

Page: 185 / 662

Test Procedure (continued)
9. Increase engine speed to high idle speed (3,000 rpm) . Use InfoCenter
Display or phototac to verify that engine speed is correct.
Note: The gear pump is a positive displacement type. If pump flow is
completely restricted or shut off, damage to the pump, tester, or other
components could occur.
10. While watching tester pressure gauge, slowly close the tester flow control
valve until 5,500 kPa (800 psi) is obtained on gauge. Ensure that the engine
speed remains at 3,000 rpm.
Note: If engine speed is not 3,000 rpm during this test, pump flow will be
different than listed GPM/LPM.
11. Identify gear pump (P3) flow on tester:
Flow tester reading to be : A pump (P3) in good condition should have a flow
of approximately 17.4 L/minute (4.6 gallons/minute) at 5,500 kPa (800 psi) .
12. Open the tester flow control valve, shut off the engine, and record test results.
13. If flow is less than 20 L/minute (4 gallons/minute) or a pressure of 5,500
kPa (800 psi) cannot be obtained, consider that a gear pump problem exists.
Check for restriction in pump intake line. If pump intake is not restricted,
remove gear pump and repair or replace pump as necessary; refer to
Hydraulic Pump Assembly (page 6–163) and Servicing the Gear Pump (page
6–170) .
Note: If the flow from gear pump (P3) is low, the operation of both the charge
circuit and the steering circuit will be affected.
14. .After testing is completed, ensure that the engine is shut off, then relieve
hydraulic system pressure; refer to Releasing Pressure from the Hydraulic
System (page 6–8) . Remove hydraulic tester from hydraulic tube and pump
fitting. Install oil filter assembly and then connect removed hydraulic tube
to oil filter and piston pump fitting.
15. Lower and secure operator seat.
Reelmaster ® 5410/5510/5610 Series Page 6–67 Hydraulic System: Testing the Hydraulic System
15216SL Rev C