Bobcat 331 - Hydraulic Controls (Cont’d)

A
P–19381
1
C
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P–16623
P–16616
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331/331E/334 Excavator
Operation & Maintenance Manual
13
HYDRAULIC CONTROLS (Cont’d)
9.
Quick Couplers
Excavators and attachments have flush faced couplers
(Item 1) [A].
Hydraulic fluid, tubes, fittings and quick
couplers can get hot when running machine
and attachments. Be careful when connecting
and disconnecting quick couplers.
W–2220–0396
AVOID BURNS
To Connect:
Remove any dirt or debris from the surface of both the male
and female couplers, and from the outside diameter of the
male coupler. Visually check the couplers for corroding,
cracking, damage, or excessive wear, if any of these
conditions exist, the coupler(s) (Item 1) [A] must be
replaced.
Install the male coupler into the female coupler. Full
connection is made when the ball release sleeve slides
forward on the female coupler.
To Disconnect:
Hold the male coupler. Retract the sleeve on the female
coupler until the couplers disconnect.
NOTE: Some machines may have a locking sleeve on
the female coupler. The pin and groove (Items
1 & 2) [B] must be aligned for the sleeve to
move for connection and disconnection.
Auxiliary Hydraulics
Press the Auxiliary Hydraulics button on the right console
(Item 1) [C].
Move the switch (Item 2) [C] on the right control lever to the
right or left to direct fluid flow to an attachment such as a
breaker or hydraulic clamp.
Relieving Hydraulic Pressure
Stop the engine and turn the key to RUN (Base) or press
ENTER CODE Button (Keyless).
Press AUX HYD Button (Item 1) [C] and then move the
switch (Item 2) [C] to the right and left several times.
1
2
B
N–15540