4 MACHINE DESCRIPTION / CONTROLS
42
RT-40 US O&M
0404-766 2019-05
4.7 Auxiliary Hydraulics
The RT-40 models come equipped with an
auxiliary hydraulic system designed to power
compatible hydraulic attachments.
To operate, connect the attachment to the
appropriate quick couplers (fig. 4.7-1).
To connect couplers:
1. Clean couplers thoroughly (both ends).
2. Release residual pressure in the system by pressing item 1 (fig. 4.7-1). See
also section 2.18 for releasing residual pressure prior to service.
3. Push the male and female coupler ends together, then turn coupler collar 1/4
turn to lock.
The auxiliary hydraulics can provide either variable or continuous flow depending
on the requirements of the attachment being utilized.
To engage variable auxiliary hydraulic flow, activate the roller-style switch on the
top of the right joystick, labeled 2 in figure 4.7-2.
To engage continuous auxiliary hydraulic flow, activate the 3-position switch on
the dash panel, labeled 3 in figure 4.7-3.
• Moving the variable or continuous switches from one position to the opposite
position has the effect of reversing hydraulic flow through the system.
• The continuous flow auxiliary switch must be in its neutral position in order to
start the engine.
• The continuous flow auxiliary switch has a small orange locking mechanism
that must be disengaged before the switch will activate flow.
3
4.7-1
4.7-2
4.7-3
1
flow
2
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