Back Pressure Gauge; Hydraulic Fluid Level - Dukane VWA-4300 User Manual

the hydraulic cylinder and lines, so it will take less than
18.5 gallons to refill. Add new fluid until level in the
sight glass is at 50% (Figure 11- 4). Again it is best to use
a pump to fill the reservoir to prevent spillage. We also
recommend filtering the fresh fluid to avoid the possibility
of any contaminants entering the hydraulic system. You
may want to attach a high capacity filter to your pump to
speed up the process.
We prefer Mobil DTE® 25 hydraulic fluid because it has a
higher temperature breakdown rating. There is very little
price difference, and the cost of replacing components in
the hydraulic system dictates good maintenance proce-
dures and quality fluid.
When the fluid is changed, install a new filter element.
Contact Flodyne/Hydradyne Inc, Hanover Park, IL 60103
USA, (630) 563–5468. The replacement element is Part
No. . After refilling the reservoir, place
0075R010BN3HC
the new filter in the basket and reinstall them. Screw the
filler cap back on making sure the O–ring seats properly.
Tighten the cap securely using a wrench to create a positive
seal around the O–ring and prevent any fluid leaks. After
the system has been cycled a few times, recheck the fluid
level. It may be necessary to add more hydraulic fluid if the
sight–glass level has dropped below 50%.
Safely dispose of used hydraulic fluid following all fed-
eral, state and local environmental regulations applicable
to your area. The person disposing of the material is
responsible for any hazard created.

Back Pressure Gauge

The suction gauge shown in Figure 11 - 4, should always
remain in the green safe operating area, which is between
0 and 35 on the dial face. Once the back pressure in-
creases and enters the yellow region of the gauge (35 to
43), it is time to replace the hydraulic filter. Do not oper-
ate the welder if the pressure is in the red area (greater
than 43 psi). We recommend that you replace the hydrau-
lic fluid whenever you install a new filter. For a replace-
ment filter, contact Flodyne/Hydradyne Inc, Hanover
Park, IL 60103 USA, (630) 563–5468. The filter element
is Part No.
0075R010BN3HC
filter by pushing in the cap and twisting counterclockwise
(CCW) . Replace the air filter if needed.
Dukane Manual Part No. 403-592-00
Continued from Previous Page
. Also check the air vent
Filter Suction
Gauge
Figure 11 - 4 Hydraulic Fluid In Sight Glass and Back
Pressure Gauge
Temperature 25° C
Brand
Ambient
AGIP/Tutela OSO 46
Atlantic Ideal AW 46
Castrol Hyspin AWS 464
Hyspin HDX 46
ESSO Nuto H 48
Ipiranga Ipitur AW 46
Mobil Oil Mobil DTE 25
Petrobras Lubrax Industrial
HR-46 EP
Renolub Renolin B 15
(Fuchs) Renolin MR 15
Shell Tellus 46
Tellus T 46
Texaco Rando Oil HD446
Equivalent Hydraulic Fluids For Normal
Table 11 - I
and Elevated Temperatures
Section 11- Maintenance
Hydraulic Fluid
Level Sight Glass
Replacement Filter
Element Part No.
Ambient Temp.
30° C to 50° C
OSO 68
Ideal AW 68
Hyspin AWS 68
Hyspin HDX 68
Nuto H 68
Ipitur AW 68
Mobil DTE 26
Lubrax Industrial
HR-68 EP
Renolin B 20
Renolin MR 20
Tellus 68
Tellus T68
Rando Oil HD68
Page 135