Domestic Series 5000 Hydraulics
20
8.13. The flow meter should rise to 4 GPM (15 LPM)
and hold steady at that level. See Figure 8.13.
8.14. After the flow rate is established, lower the throt-
tle setting to 1,200-1,500 RPM
8.15. Carefully close the valve on the test kit. It is not
necessary to move the lift cylinder to generate
pressure.
NOTE: Designed system pressure is 1,500 PSI
(103 Bars). Testing beyond this pressure sub-
j e ct s th e s y st e m t o n ee d le ss o ve r- lo a d.
See Figure 8.15.
8.16. The flow should remain constant, while the pres-
sure climbs to 1,500 PSI (103 Bars). Open the
valve a soon as the readings are confirmed.
NOTE: Remember, the flow varies with engine
RPM, but does not vary with pressure generated
unless the auxiliary pump is failing.
8.17. Turn off the engine. Retract the lift cylinder fully
to relieve pressure from the hydraulic system.
8.18. Remove the test kit from the line between the
steering unit and the lift control valve, and con-
nect the hydraulic line to the control valve.
8.19. If the control valve is receiving full pressure from
the steering unit, but the lift cylinder lacks power,
perform a pressure test at the line between the
valve and the cylinder.
8.20. Install the test kit between the control valve and
the lift cylinder.
8.21. If the tractor is equipped with a mid-mount
mower deck, it will be necessary to disconnect
and remove the link that connects the three point
lift arm to the deck lift mechanism.
See Figure 8.21.
Figure 8.13
Figure 8.15
Figure 8.21
Deck lift link
Pressure
line to lift
cylinder
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K&T Saw Shop 606-678-9623 or 606-561-4983
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