Service Manual

HYDRAULIC SYSTEM

4-34 Z580/Z593/Z595 Diesel Service Manual

20. Lower the seat.

12. Record the difference or “ﬂ ow droop” of the pump.

For the Hydro-Gear PR Series pump, maximum

allowable “ﬂ ow droop” is 2.5 gpm (9.46lpm). Any

droop greater than 2.5 gpm (9.46lpm) is considered

unacceptable and the pump should be repaired/

replaced barring any other potential causes.

13. Return the motion control lever to the neutral posi-

tion and return both levers to the neutral locked

position. Engage the parking brake. Slow the engine

speed to idle and turn the ignition switch to the OFF

position.

14. Remove the hydraulic ﬂ ow tester from the hydraulic

lines.

15. Install the hydraulic lines to the wheel motor. Note

the previously marked hose and ﬁ tting positions.

16. Check the hydraulic reservoir. Fill as necessary to

the “Hot” level mark (Fig. 347).

Note: Cold oil level has been lowered by 1/4”

(.635cm) from that shown in 2006-2008

Operator Manuals.

17. Reinstall the rear tire and lower the unit to the

ground.

18. Remove the temporary jumper cable from the wire

harness seat switch terminals. Plug the wire harness

terminals into the seat switch (Fig. 348).

Fig 347 ﬁ g. 55 line art

Fig 348 PICT-3471

19. Plug the wire harness electric clutch wire into the

electric PTO clutch (Fig. 349).

A. Cap C. Cold ﬂ uid level - full

B. Bafﬂ e D. Hot ﬂ uid level - full

Fig 349 PICT-3513