Detaching; Operating Attachments; Front Hitch; Pto Drive Belt & Pulley - Ventrac 4500Y Operator's Manual

Detaching

1. Park the power unit on a level surface and set
the parking brake.
2. Fully raise the front hitch and attachment and
set the weight transfer to 0 (if equipped).
3. Lower the attachment to the ground and place
the primary SDLA lever in the float position.
4. Shut off power unit engine.
5. Release the PTO belt tensioner rod.*
6. Remove the attachment belt from the PTO drive
pulley of the power unit.*
7. Move the secondary SDLA lever left and right to
release pressure from the auxiliary hydraulic cir-
cuit and disconnect the hydraulic quick couplers
from the power unit.*
8. Disconnect the electric plug from the socket on
the power unit.*
9. Lift the front hitch lever lock to release the front
hitch lock lever and move the front hitch lock
lever to the unlocked position.
10. Restart the power unit and slowly back away
from the attachment.
Refer to attachment manual for additional details.
*Applies only if the attachment is equipped.

Operating Attachments

Refer to the operator's manual for each attachment
for the proper operation and use of the particular
attachment that is being operated.

Front Hitch

The front hitch is used to secure attachments to power
unit, and to raise and lower the attachment. The front
hitch is controlled by the primary SDLA lever. Pull the
lever to the left to raise the attachment, push the SDLA
lever to the right to lower the attachment. The primary
SDLA is equipped with a 'float' position. Push the
SDLA lever to the far right position until the float detent
engages and stays in place to operate in float.
PTO Drive Belt & Pulley
If the attach-
ment requires
a drive belt,
release the PTO
belt tensioner
rod and install
the attachment
belt around the
drive pulley at the location shown above. When the
belt is in place around the drive pulley, push the PTO
belt tensioner rod in to engage and tighten the belt.
GENERAL OPERATION
PTO drive
pulley
Operation - 33

Front Auxiliary Couplers

EQUIPMENT DAMAGE!
Dirt and other debris in hydraulic system can cause
damage to the system. Wipe clean the mating parts
of the couplers before coupling. Use protective rub-
ber plugs over hydraulic couplers when not in use.
If attachment requires auxiliary hydraulics, couple the
attachment hoses with the front auxiliary couplers.
This is done by sliding the collar of the coupler rear-
ward and inserting the end of the attachment hose into
the coupler and releasing the collar. If the collar will not
snap forward on its own, pull it forward manually.
The couplers that the hoses are attached to will
affect which way the secondary SDLA lever is
pushed to control the action of the attachment. If the
attachment is equipped with red and yellow indica-
tors, connect the hoses and quick couplers so the red
indicators are paired together and the yellow indica-
tors are paired together. If the hoses are connected
and the action is not the desired motion, then switch
the hoses the couplers are attached to.
Auxiliary couplers are controlled by moving the sec-
ondary SDLA lever left or right.
NOTE: Pressure build-up in the attachment hose
and the power unit couplers may occur, causing
difficult installation of hoses. If hoses do not easily
connect, try one or both of the following steps:
1. To release the pressure from power unit cou-
plers, turn off engine and move the secondary
lever of the SDLA right and left to release pres-
sure in the power unit's hydraulic circuit.
2. To release pressure in the attachment hose,
loosen one of the hose ends and retighten when
pressure is released.
WARNING
Hydraulic fluid is under high pressure and
can penetrate skin, causing injury. Keep
hands, face, and body away from pinholes
or nozzles that eject hydraulic fluid under
high pressure.
CAUTION