Seed Hawk AIRCART 2012 - Manual (Page 62)

Seed Hawk
®
Manual Aircart Page 57
8.1 FILTER AND PRESSURE REDUCING VALVE
There is a filter placed in-line with the hydraulic motors which is located at the
front of the aircart near the diverter valve for the auger or conveyor. The filter is
equipped with a blockage indicator which displays a red band when a pressure
differential greater than 5 bar (72.5 psi) occurs. Note that low oil temperatures
may give false blockage indication. To reset the blockage indicator press the
plastic cover at the top of the indicator. The filter cartridge (part number 317885)
should be replaced first after 50 hours then yearly or when signified by the
blockage indicator.
Figure 37: Hydraulic Filter and PRV
In addition to the filter there is a pressure reducing valve (PRV) which is located
next to the filter. This PRV is used to lower the hydraulic pressure entering the
motors to 1500 psi. To adjust the PRV loosen the nut at the top of the PRV.
Then using an allen key, adjust the screw until the gauge reads 1500 psi.
Tighten the nut at the top of the PRV.