Toro GrandStand 74534 - Page 166

HYDRAULIC DRIVE SYSTEM
6-3336” & 40” Toro GrandStand Service Manual
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11. Capthewheelmotorttingssodebrisdoesnotenter
the system.
12. Attachthehydraulichosestotheowtestgauge
(Fig.538).
Note: Whenusingaowtestgaugethatisnotbi
directional,damagetotheowtestercould
occur if the machine is operated in reverse.
14. Run the machine for 2 minutes in forward (no load)
to purge air from the system.
15. Run the machine at full throttle (no load). Verify the
RPMwithatachometer:3200+ 150 RPMs. Do not
exceed 3600 RPM.
16. With the drive control fully forward, slowly tighten the
restriction valve until the gauge indicates 300 PSI
(21 bar) (Fig. 540).
Fig. 538 IMG-0916a
13. Open the restriction valve all the way (counter-
clockwise) (Fig. 539).
Fig. 539 IMG-0917a
Fig. 540 IMG-0921a
17. Recordtheowreadingfromthebi-directionalow
meter.Makeasecondowreadingat1100PSIand
record that reading (Fig. 541).
Fig. 541 IMG-0920a