Using the Hydraulic Control
The hydraulic control supplies hydraulic power from
the machine pump whenever the engine runs. You
can use the power through the quick couplers at the
rear of the machine.
WARNING
Hydraulic fluid escaping under pressure can
have sufficient force to penetrate skin and
can cause serious injury.
Use care when connecting or disconnecting
hydraulic quick couplers. Shut off the
engine, engage the parking brake, lower the
attachment, and place the remote hydraulic
valve in the float detent position to relieve
the hydraulic pressure before connecting or
disconnecting the quick couplers.
Important:
If multiple machines use the
same attachment, cross-contamination of the
transmission fluid may occur. Change the
transmission fluid more frequently.
Using the Hydraulic Bed-Lift Lever
to Control Hydraulic Attachments
•
O
FF
Position
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
AISE
(Quick Coupler A) Position
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
FF
position.
g009822
Figure 18
1.
Quick coupler A position
2.
Quick coupler B position
•
L
OWER
(Quick Coupler B) Position
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
FF
position. Momentarily holding and then
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
N
Position
27
Summary of Contents for 07385TC Workman HDX-D
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