8.
Install the hydraulic system
drain plug and tighten.
9.
Remove the hydraulic reser-
voir filler cap (black) and fill
the hydraulic system with
ASV Premium All Season
MV Hydraulic Oil or equiva
lent until the full mark on the
hydraulic fluid sight gauge
has been reached
(approx. 12.5 gal.). (fig. 3, 4)
Note:
When checking or adding
to the hydraulic fluid level, do so
with the lift arms in the lowered
position. If the level is checked
with the lift arms in the raised
position, an inaccurate reading
will result.
Note:
When adding hydraulic
fluid, add fluid slowly until it is
visible in the sight gauge. Once
visible, add fluid in one quart
increments until the full mark
has been reached.
10.
Install and secure the
hydraulic reservoir filler cap.
11.
Start the machine and oper-
ate all hydraulic circuits to
work any trapped air out of
the system.
•
Drive the machine forward
and backward.
•
Raise and lower the lift arms
(unloaded).
•
Dump and curl bucket/quick
attach.
12.
Once you have purged the
air from the system, check
the level on the hydraulic
fluid level sight gauge. If
the level is low repeat step 9
and 10 to complete the pro-
cedure.
Case Drain Filter
The PT machines are also
equipped with a filter in the aux-
iliary circuit case drain line. It
protects the main hydraulic sys-
tem in the event of catastrophic
failure in an attachment. This fil-
ter is designed to last the life of
the vehicle. The only instance
where this filter should be
replaced is if an attachment
equipped with a case drain has
a drive motor failure during use.
(fig. 5)
MAINTENANCE
Hydraulic System
49
Full
Low
4
3
5
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