Seed Hawk AIRCART 2013 - Manual (Page 75)

SEED HAWK
®
AIRCART OPERATOR’S MANUAL 70
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 31
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.