HYDRO-AIRE SERIES PRESSES
INSTALLATION, OPERATION, AND MAINTENANCE
15
5.2 Replacing Oil
Do not perform Replacing Oil procedure unless
recommended by an AIM Joraco technician.
To fully purge and replace oil in hydraulic cylinder, perform
the following procedure.
1.
With air still supplied to the cylinder make sure the ram is
in the home position (cylinder retracted)
2.
Place shims between the bolster plate and the ram. It is
important to get the shims as tight as possible to ensure
the correct amount of oil will be added to the cylinder.
3.
Dump the air to the cylinder by releasing the sleeve valve
4.
Open venting plug screw
*See Figure 1*
5.
Disconnect hose from port (P1) on 4-way valve
*See Figure 1*
6.
Disconnect hose from port (P2) on 4-way valve
*See Figure 1*
7.
Attach ¼” Poly
-flow line to bleed valve (P3)
*See Figure 2*
8.
Route ¼” Poly
-flow line to catch pan to retain oil being
removed from cylinder
9.
Turn screw on bleed valve (P3) counterclockwise until it
stops (valve open)
10.
Supply air to port (P2) to begin forcing the oil out of the
cylinder
11.
Continue supplying air to port (P2) until oil stops flowing
from ¼” Poly
-flow line
12.
Turn screw on bleed valve (P3) clockwise until it stops
(valve closed)