17
Mount the two seal rings and fittings at the front of the valve block. Carefully mount the
small nozzle in the fitting, and then mount the fitting with a seal ring on the valve block. Add
copper grease to the thread on the pressure relief valve. Mount the pressure relief valve on
the valve block, and tighten it with a torque of 40 Nm. Grease the spool and the hole in the
valve housing, and carefully mount the spool in the valve housing. After pushing the spool
through the valve housing, always check for remnants of the O-ring placed around the spool.
If there are remnants, replace the O-ring to make sure that the spool function is completely
tight. Mount the retaining ring at the back end of the spool. Mount the seal rings on the two
fittings, and then mount the flat-face couplings.
