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Using the Hydraulic Bed-Lift Lever
to Control Hydraulic Attachments
•
O
Position
FF
This is the normal position for the control valve
when it is not in use. In this position, the work
ports of the control valve are blocked and any load
is held by the check valves in both directions.
•
R
(Quick Coupler A) Position
AISE
This position lifts the bed and rear hitch
attachment, or applies pressure to quick coupler
A. This position also allows hydraulic fluid to return
from quick coupler B to flow back into the valve
and then out to the reservoir. This is a momentary
position, and when you release the lever, it
spring-returns to the center, O
Figure 16
1. Quick coupler A position
•
L
(Quick Coupler B) Position
OWER
This position lowers the bed, rear hitch attachment,
or applies pressure to quick coupler B. This also
allows hydraulic fluid to return from quick coupler
A to flow back into the valve and then out to the
reservoir. This is a momentary position, and when
you release the lever, it spring-returns to the
center, O
position. Momentarily holding and then
FF
releasing the control lever in this position provides
hydraulic-fluid flow to quick coupler B, which
provides power down on the rear hitch. When you
release it, it holds the down-pressure on the hitch.
Important:
If you use it with a hydraulic
cylinder, holding the control lever in the lower
position causes the hydraulic-fluid flow to
go over a relief valve, which can damage the
hydraulic system.
•
O
Position
N
position.
FF
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2. Quick coupler B position
This position is similar to the L
B
COUPLER
POSITION
to quick coupler B, except that the lever is held in
this position by a detent lever in the control panel.
This allows hydraulic fluid to flow continuously to
equipment that use a hydraulic motor.
Use this position only on attachments with a
hydraulic motor attached.
Important:
If you use it with a hydraulic
cylinder or no attachment, the O
causes the hydraulic-fluid flow to go over a
relief valve, which can damage the hydraulic
system. Use this position only momentarily or
with a motor attached.
Important:
Check the hydraulic-fluid level
after installation of an attachment. Check the
operation of the attachment by cycling the
attachment several times to purge air from
the system, then check hydraulic-fluid level
again. The attachment cylinder slightly affects
the fluid level in the transaxle. Operating the
machine with a low hydraulic-fluid level can
damage the pump, remote hydraulics, power
steering, and machine transaxle.
Connecting the Quick Couplers
Important:
Clean dirt from the quick couplers
before connecting them. Dirty couplers can
introduce contamination into the hydraulic
system.
1.
Pull back the locking ring on the coupler.
2.
Insert the hose nipple into the coupler until it
snaps into position.
Note:
When attaching remote equipment to the quick
couplers, determine which side requires pressure,
then attach that hose to quick coupler B, which has
pressure when you push the control lever forward or
locked in the O
position.
N
Disconnecting the Quick Couplers
Note:
With both the machine and attachment shut
off, move the lift lever back and forth to remove the
system pressure and ease the disconnection of the
quick couplers.
1.
Pull back the locking ring on the coupler.
2.
Pull the hose firmly from the coupler.
Important:
Clean and install the dust plug
and dust covers to the quick coupler ends
when not in use.
26
(
OWER
QUICK
). It also directs hydraulic fluid
position
N
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