Toro Reelmaster 5510 Series, Service Manual

Page: 244 / 662

Test Procedure (continued)
IMPORTANT
Do not hold over relief for longer than necessary to obtain the
pressure reading, while you perform this test.
10. Monitor the pressure gauge carefully while you slowly close the tester
flow control valve. As the relief valve lifts, the pressure gauge needle will
momentarily stop.
Note: The system pressure will continue to increase, once the relief valve is
opened.
11. Once the relief valve lifts, the system pressure should be:
• Approximately 17,500 kPa (2,500 psi) for the relief valve (RV1)
• Approximately 24,100 kPa (3,500 psi) for the relief valve (RV2)
12. Open the tester flow control valve, disengage the cutting units and shut off
the engine.
13. If the pressure is incorrect, remove the RV valve on the mow manifold, and
clean or replace the valve; refer to Servicing the Mow Control Manifold
Assembly (page 6–191) .
14. If you are not able to obtain relief pressure, check for a restriction in the
pump intake line and/or check the gear pump (P2) (front cutting reel circuit)
and/or pump (P1) (rear cutting reel circuit) for wear, damage, or inefficiency;
refer to
Testing the Mow Circuit–Gear Pump (P1) and (P2) Flow (5610-D)
(page 6–127) .
15. After you complete the testing, shut off the engine, and then release
hydraulic system pressure; refer to Releasing Pressure from the Hydraulic
System (page 6–8) . Disconnect the tester from the machine and connect the
hydraulic hose to the reel motor fitting.
16. Start the engine, check for hydraulic-fluid leaks, repair any leaks as
necessary, and fill the hydraulic tank with the correct quantity of new hydraulic
fluid before returning the machine to service.
Hydraulic System: Testing the Hydraulic System Page 6–126 Reelmaster ® 5410/5510/5610 Series
15216SL Rev C